Chevy Geek, profile picture
Uploaded byChevy Geek
PDF, PPTX5,318 views

Small Block Chevy Head Casting Numbers

The document lists Small Block Chevy engine head casting numbers from 1955 to present, including the year, engine displacement, valve sizes, chamber/port sizes, and notes. There are over 100 casting numbers listed with specifications to identify Chevy V8 cylinder heads.

Embed presentation

Download as PDF, PPTX
Small Block Chevy Head Casting Numbers Post link: https://angf35eis.com/sbc-head-casting-numbers/ Casting number Year C.I.D. Valves Chamber Size Notes 176450 75-76 262 - 305 1.71 / 1.5 330545 73 350 2.02/1.60 76cc 330862 71-73 400 1.94/1.50 330864 70-81 366/427/454 2.06/1.77 Open chamber Oval port 330865 70-84 366/427/454 2.06/1.77 Open chamber Oval port 330866 68-78 366/427 Oval Port Open chamber 330867 68-73 427 Oval Port Open chamber 333881 74-75 350 2.02/1.60 76cc 333882 74-80 350/400 76cc 336768 73-76 427 Oval Port Open chamber 336781 73-85 454 2.06/1.77 113cc Oval port 340292 70's 64cc angle plug, over the counter 343771 68-85 366/427/454 2.06/1.77 Open chamber Oval port 343772 76-84 366/427/454 2.06/1.77 Open chamber Oval port 343783 75-78 454 2.06/1.77 Open chamber Oval port 346236 75-87 454 2.06/1.77 113cc Oval port 346238 75-87 454 2.06/1.77 113cc Oval port 352625 70-76 454 Oval Port Open chamber 353049 70-73 454 2.06/1.77 113cc Oval port 354434 75-79 262/267/305 60cc 358741 76-79 305 359944 71-79 350 1.94/1.50 76cc 366765 73-84 427/454 2.06/1.77 Open chamber Oval port 367450 75-76 262 376445 77-85 350 76cc 376450 75-81 262/267/305 60cc 6 or 7 exhaust bolt holes
Small Block Chevy Head Casting Numbers Post link: https://angf35eis.com/sbc-head-casting-numbers/ Casting number Year C.I.D. Valves Chamber Size Notes 376455 77-85 350 376495 Jun-79 350 1.94/1.50 76cc 383882 71-73 400 399380 70-73 400 76cc 426424 72-82 305/350/400 1.72/1.50 458624 69-84 350 1.94/1.50 76cc 458642 75-84 350 460703 78-80 350 1.94/1.50 76cc 462614 77-79 305 60cc 462624 75-86 350/400 1.72/1.50; 194/1.50; 2.02/1.60 76cc 464033 76-86 350 1.94/1.50 76cc 464036 76-86 350 1.94/1.50 76cc 468642 76-up 350/400 471513 79 267/350 472424 76-79 305 1.72/1.50 473328 68-85 366 2.06/1.77 Open chamber Oval port 474213 78-82 305 1.72/1.50 474214 78-82 350 1.94/1.50 76cc 475590 78-82 400 1.94/1.50 76cc 517513 79 267/350 1816887 63 283 Made in "Canada" GMC Truck 3030817 74 400 2-bolt 3238882 68-69 350 1.94/1.50 76cc 3297185 57-67 307/327/350 1.72/1.50 3391635 68-76 305
Small Block Chevy Head Casting Numbers Post link: https://angf35eis.com/sbc-head-casting-numbers/ Casting number Year C.I.D. Valves Chamber Size Notes 3636839 55 265 3703523 55 265 1.72/1.50 195HP 3703524 55 265 3713358 55-56 265 3713569 55-56 265 3720991 56-57 265 3725306 56 265 3727185 69-73 307 3731262 56 265 1.72/1.50 Dual Quad Corvette 3731539 57 283 283 HP FI 3731544 57-61 283 3731548 57-62 283 3731554 57-62 283 3731556 57 283 Made in "Canada" Truck 3731762 56 265 Vette 2x4 Carbs 3732791 58 348 3737465 60-61 283 3737739 57-62 283 283 and 283 Corvette F.I. 3737775 62-67 283/327 3740997 57 283 1.72/1.50 Dual Quad FI & 4-brl 220-270HP 3743056 58 283 3743096 62-67 327 GMC Truck 3747363 57-61 283 3747460 59-67 283/327 70cc 3748056 62-67 327 1.72/1.50 3748720 57-58 283 1.72/1.50 Dual Quad FI & 4-brl Corvette
Small Block Chevy Head Casting Numbers Post link: https://angf35eis.com/sbc-head-casting-numbers/ Casting number Year C.I.D. Valves Chamber Size Notes 3748770 58 283 3748772 58-61 283 3755537 57-62 283 3755538 59 283 1.72/1.50 250-290HP FI Corvette 3755539 58-62 283 3755549 57-62 283 3755550 59 283 3755585 62-67 327 GMC Truck 3755896 62-64 283 1.72/1.50 3756519 57-62 283 283 and 283 Corvette F.I. 3758379 59-61 348 3759256 58 348 3760116 59 283 1.72/1.50 Dual Quad FI & 4-brl Corvette 3767460 59-60 283 3767462 62-67 327 3767465 59-61 283 3767738 59-61 348 3767754 59-61 283 60cc 3767792 60-64 283 3770126 67-70 327/350 1.94/1.50 3773012 55 265 1.72/1.50 3774634 64-67 327 1.72/1.50 3774682 60-64 283/327 70cc 3774684 62-64 327 75cc 3774690 58 283 1.72/1.50 FI Corvette 3774692 58-64 283 60cc
Small Block Chevy Head Casting Numbers Post link: https://angf35eis.com/sbc-head-casting-numbers/ Casting number Year C.I.D. Valves Chamber Size Notes 3776434 64-67 327 3781147 60-61 348 High Perf 3782461 64-66 327 62cc Camel hump, no accessory holes, 160/62cc port volumes 3782462 67 327 1.94/1.50 Corvette 2.02/1.60 3782870 62-67 327 327 and 327 Corvette 3782879 62-67 327 327 and 327 Corvette 3789817 62-67 327 327 and 327 Corvette 3789935 57-62 283 3790721 64-67 283 3792563 65-67 327 3795586 61 409 360HP 3795893 58-72 283 - 307 - 327 3795896 63-65 283 60cc 3796896 64-67 283 1.72/1.50 60cc 60cc Chevy II 3798996 63-67 327 3814462 67 350 1.94/1.50 3814480 60-67 283/327 1.72/1.50 70cc 3814482 62-67 283/327/350 75cc 3814690 62-64 409 High Perf 3817680 63-67 283/327 3817681 62-67 327 3817682 61-62 283 3819333 62-65 348/409 3830817 63-65 409 340HP 3836839 55 265 3836842 57-67 283/327
Small Block Chevy Head Casting Numbers Post link: https://angf35eis.com/sbc-head-casting-numbers/ Casting number Year C.I.D. Valves Chamber Size Notes 3836924 63-64 283 1.72/1.50 3836942 58-62 283 1.72/1.50 3837063 58-62 283 1.72/1.50 3837064 56-62 265/283 3837065 55-56 265 Truck 3837731 63 409 High Perf Z-11 3837739 57 283 283 and 283 truck 3837775 62-67 283/327 1.72/1.50 3848720 57-58 283 3849820 65 327 1.72/1.50 3849852 57-67 283 3849935 65-67 283 3852172 62-64 327 3852583 65 409 400HP 3854520 62-67 283/327 1.72/1.50 3855961 68-76 350 2-bolt 3856206 65-66 396 2.06/1.77 98cc 98cc Oval port 3856208 65 396 2.06/1.77 109cc 109cc Z-16/L-37 Rectangular port 3856213 66-70 366 2.06/1.77 Closed chamber Oval port 3856260 68 396 Oval Port Closed chamber 3858174 65-67 327 3864812 57-67 283 283 and 283 truck 3867802 57-60 283 1.72/1.50 FI Corvette 3872702 66 396/427 2.06/1.77 98cc 98cc Oval port L-34/L-35/L-36 3873064 56-57 265 1.72/1.50 3873858 66-67 396/427 2.06/1.77 109cc 109cc L-78/L-72 Rectangular port
Small Block Chevy Head Casting Numbers Post link: https://angf35eis.com/sbc-head-casting-numbers/ Casting number Year C.I.D. Valves Chamber Size Notes 3876132 62-67 327 327 and 327 Corvette 3876487 71-73 350 1.94/1.50 76cc 3876775 60-67 283/327 75cc 3876875 66-70 427 2.06/1.77 Closed chamber Oval port 3878775 64-67 327 1.72/1.50 3884520 60-67 283 60cc Some marked "Made in Canada", also used by Studebaker 3890462 66-67 302/327/350 64cc Camel hump, no accessory holes 3891462 62-67 302/327/350 1.94/1.50 2.02/1.60 64cc 3891492 64-67 327 1.94/1.50 3892657 65-67 327 3896944 65-67 283 3901068 87-up 350 64cc Crate motor, 285HP 3904390 66-67 396/427 2.06/1.77 98cc 98cc Oval port L-34/L-35/L-36 3904391 65-67 396/427 2.06/1.77 107cc 107cc L-78/L-71/L-72 Rectangular port 3904392 67 427 2.19/1.88 106cc 106cc L-88/L-89 Aluminum Rectangular port 3904393 66-68 366 2.06/1.77 Closed chamber Oval port 3908952 67 427 Oval Port Open chamber 3909802 66-67 396/427 2.06/1.77 100cc 100cc Oval port L-34/L-35/L-36/L-68 3911011 68 327 3911032 68 307/327 70cc 3912264 58-62 283 3912265 63-64 283 3912291 68-70 302/327/350 1.94/1.50 2.02/1.60 64cc Doubble humps 3912311 65-67 327 3912313 65-67 327 3914636 68-73 307
Small Block Chevy Head Casting Numbers Post link: https://angf35eis.com/sbc-head-casting-numbers/ Casting number Year C.I.D. Valves Chamber Size Notes 3914660 68-69 327 327 and 327 Corvette 3914678 68-69 327 327 and 327 Corvette 3917215 67-69 396/427 2.06/1.77 100cc 100cc Oval port L-34/L-35 3917219 66-70 366/427 2.06/1.77 Closed chamber Oval port 3917264 67 302 2.02/1.60 64cc 64cc Z-28 3917290 67-68 307/327 3917291 67-68 302/327/350 64cc Camel hump, no accessory holes 3917292 68 327/350 64cc Camel hump 3917293 67-68 307/327 75cc 3919840 67-69 396/427 2.06/1.77 107cc L-78/L-71/L-72 Rectangular port 3919842 68-69 396/427 2.19/1.88 106cc L-88/L-89 Aluminum Rectangular port 3921175 66 327 1.94/1.50 3923441 67-76 350 1.94/1.50 76cc 3927185 69-76 307/327/350 70cc 3927186 69-70 302/350 64cc Camel hump, has accessory holes 3927187 69-70 350 64cc Camel hump, has accessory holes 3927188 69 327 74cc 3928454 68 307 1.72/1.50 3928455 68 302/327 2.02/1.60 64cc 325 & 350HP 3928494 68 327 2.02/1.60 64cc 350HP 4-brl 3928495 68 327 1.72/1.50 3931063 69-70 396/427 2.06/1.77 100cc Oval port L-34/L-35 3931633 68-73 307 3931635 68-76 350 3931637 68-69 327 3931638 68 327 Truck
Small Block Chevy Head Casting Numbers Post link: https://angf35eis.com/sbc-head-casting-numbers/ Casting number Year C.I.D. Valves Chamber Size Notes 3931639 68 302 2.02/1.60 64cc 3932373 68-73 307 3932386 68-76 327 - 350 350 4-bolt and 327 Corvette 3932388 68-76 350 2-bolt 3932441 69-70 350 76cc 3932454 69-73 307 3932882 76 400 3933148 68-73 350 76cc 3933149 69-70 427 2.06/1.77 122cc Oval port 3935401 68-76 427 Oval Port Open chamber 3941174 68 327 1.72/1.50 3946074 69-71 396/454 2.19/1.88 118cc L-88/ZL-1 Aluminum Rectangular port 3946812 69 350 3946813 69-79 350 Truck 3947014 68-70 350 3947040 68 327 64cc Right angle casting identifier, good HP head, used in trucks, no accessory 3947041 69-70 302/350 64cc Right angle casting identifier, accessory holes, good HP head 3951509 74 400 2-bolt 3951511 70-73 400 4-bolt 3951598 70 400 76cc 3956618 68-76 350 4-bolt 3958618 68-76 350 2-bolt 3961598 70-76 400 1.94/1.50 76cc 3964280 66-70 427/454 2.06/1.77 Closed chamber Oval port 3964286 350 3964290 69-70 396/402/427/454 2.06/1.77 100cc Oval port
Small Block Chevy Head Casting Numbers Post link: https://angf35eis.com/sbc-head-casting-numbers/ Casting number Year C.I.D. Valves Chamber Size Notes 3964291 69-70 396/402/427/454 2.19/1.88 108cc L-78/L-71/L-72/LS-6 Rectangular port 325cc intake 3964292 70 454 2.19/1.88 109cc LS-6 Rectangular port 3965198 69 396 2.06/1.77 Open chamber Oval port 3965742 70 350 over the counter, angle plug L98 style 3970010 68-76 350 4-bolt 3970020 68-73 307 3970126 67-71 327/350 3970721 64-67 283 3971293 68-69 307 - 327 3973195 71-73 400 1.94/1.50 76cc 3973370 69-70 350 64cc over the counter in US, Canadian 350/300hp production use in Pontiac, s 3973414 70 350 64cc Camel Hump, LT1-350/370hp 3973487 71-72 350 1.94/1.5; 2.02/1.6 75cc was also used on '71 350/330hp LT1 3973493 71-72 400 76cc 3975950 68-70 366/427 2.06/1.77 Closed chamber Oval port 3981462 62-67 302-327-350 3986133 70-85 366/427 2.06/1.77 Closed chamber Oval port 3986136 70-84 366/427 2.06/1.77 Closed chamber Oval port 3986316 71 350 76cc 3986330 69-79 350 1.94/1.50 76cc 3986336 71 350 76cc 3986339 71 307/350 74cc 3986388 68-76 307/350 3990941 68-82 307/350 3991492 70 350 64cc LT1, Camel hump, accessory holes, straight plug 3993820 71 402/454 2.06/1.77 113cc Oval port
Small Block Chevy Head Casting Numbers Post link: https://angf35eis.com/sbc-head-casting-numbers/ Casting number Year C.I.D. Valves Chamber Size Notes 3994025 71 454 2.19/1.88 118cc LS-6 Rectangular port 3994026 71 454 2.19/1.88 118cc LS-6 Rectangular port 3997417 71 307 1.72/1.50 3998916 72 350 76cc also used w/'72 350 LT1, big valve, screw in studs 3998920 72-73 350 3998991 72-73 307/350 75cc 3998993 72-73 307/350 75cc 3998997 72-73 350/400 76cc chambers 3999241 72 402/454 2.06/1.77 113cc 113cc Oval port 4079261 75 350 6258723 71 454 2.19/1.88 118cc LS-6 Rectangular port 6259425 68-76 350 2-bolt 6259515 73 350 6260855 73-75 350 1.94/1.50 76cc 6260856 73-76 350 1.94/1.50 76cc 6272070 73 350 6272292 71 402/454 2.06/1.77 Open chamber Oval port 6272990 71-94 454 2.19/1.88 118cc Replacement Rectangular port 325cc intake 10033867 62cc Aluminum, over the counter Pontiac 23' head, angle plug, 196cc intake po 10045427 Pontiac/Chevy Aluminum, 91cc chamber Large Rectangle Port 10045434 55cc Aluminum, Over the counter Pontiac 15' head, angle plug, raised runner, 10049875 Pontiac/Chevy Aluminum Small Rectangle port 10051101 55cc Aluminum, Bowtie, angle plug, raised runner, 196cc intake port 10051128 90-94 454 2.19/1.88 72cc Bowtie Aluminum Rectangular port 400cc intake 10052902 427 Oval Port Open chamber 10065202 87-95 350 Truck
Small Block Chevy Head Casting Numbers Post link: https://angf35eis.com/sbc-head-casting-numbers/ Casting number Year C.I.D. Valves Chamber Size Notes 10065203 87-95 350 Truck 10065204 87-95 350 10065205 87-95 305 10065206 87-95 350 10065207 87-95 305 10088113 88-up 350 194/1.50 58cc Aluminum, angle plug, raised "D" port exhaust 10093328 61cc Aluminum, Over the counter Pontiac 15' head, 224cc ports, "roll over" hea 10101136 91-94 454 2.06/1.77 Open chamber Oval port 10101140 91-01 366/427 Oval Port Closed chamber 10106178 90 350 Aluminum, LT5, ZR1, DOHC, 32-Valve, pass. Side. 10106179 90 350 Aluminum, LT5, ZR1, DOHC, 32-Valve, drivers Side. 10110810 91-up 350 65cc Gen. 1 10114156 91-01 454 Oval Port Open chamber 10120928 87-95 350 10121033 78-88 454 2.06/1.77 Open chamber Oval port 10125320 94-96 350 Gen.II LT1, cast iron version, used on "9C1" Police package, Impala SS, 10128374 92-up 350 53cc Aluminum, Gen.II LT1, angle plug, reverse flow cooling, 175/68cc ports 10134352 Bowtie 45cc Aluminum, angle plug, "low" port, 223cc intake port, 18' race head 10134363 Bowtie This casting # has been used in many different versions of this aluminum 18' and 15' Bowtie race head. Different chamber volumes, port volumes, port locations, valve sizes, etc. were used. Check this casting carefully to determine which features it may have. There are at least 6 different versions as of 11/99 10141279 96-01 454 100cc Vortec 7400 chambers Oval Port 10147898 95-98 350 Gen.I crate motor
Small Block Chevy Head Casting Numbers Post link: https://angf35eis.com/sbc-head-casting-numbers/ Casting number Year C.I.D. Valves Chamber Size Notes 10159550 87-95 350 10159551 87-95 305 10159552 87-95 350 10159553 87-95 305 10174389 91-94 350 Aluminum, LT5, ZR1, DOHC, 32-Valve, pass. Side. 10174390 91-95 350 Aluminum, LT5, ZR1, DOHC, 32-Valve, drivers Side. 10185040 Bowtie 45cc Aluminum, Bowtie, 1st version, symmetrical ports, 263cc intake ports, spl 10205245 93 350 68cc Aluminum, Gen.II LT1, reverse flow cooling, 175/68cc port volumes 10207643 94-96 350 68cc Aluminum, Gen.II LT1, reverse flow cooling, 175/68cc port volumes 10208890 94-96 265 Gen.II, L99, 4.3 Liter V8, cast iron, reverse flow cooling 10215339 97 350 68cc Aluminum, Gen.III, LS1, 10225121 94-95 350 Aluminum, LT5, ZR1, DOHC, 32-Valve, Drivers Side. 10225122 95 350 Aluminum, LT5, ZR1, DOHC, 32-Valve, Pass. Side. 10239902 96-up 350 54.4cc Aluminum, Gen.II LT4, reverse flow cooling, 195cc Intake port, angle plug 10239906 96-up 350 1.94/1.50 Vortec 5700, "L31", 170cc Intake port 10487052 77-90 366 Oval Port Open chamber 12352783 79-93 454 2.06/1.77 Open chamber Oval port 12363391 Oval Port Bowtie Aluminum Signature Series 12363401 Rectangle Port Bowtie Aluminum Signature Series 12367712 99-up 2.00/1.55 62cc Aluminum, FastBurn, 210cc Intake port 12367713 99-up 2.00/1.55 62cc Aluminum, Fast Burn used on ZZ430 crate motor, 210cc Intake Port 12480005 2000 2.125/1.625 38cc Aluminum, Ls1"GTZ", angle plug, 12480011 97-up 48cc Aluminum, "SB2.2" 2nd version, "mirror ports" revised valve angles and p 12480034 2.02/1.60 64cc Bowtie Phase III Angle plug 184 cc intake runner 12506450 87-95 350 12509859 87-94 305
Small Block Chevy Head Casting Numbers Post link: https://angf35eis.com/sbc-head-casting-numbers/ Casting number Year C.I.D. Valves Chamber Size Notes 12516852 87-95 350 12529742 95-96 265 Gen.II, L99, cast iron 12551561 96 350 Aluminum, Gen.II, "LT1" 12552520 97-up 305 Vortec, truck 12554290 94-96 350 Gen.II LT1, cast iron version, used on "9C1" Police package, Impala SS, 12554291 95-96 265 Gen.II, "l99" CAST IRON 12555690 96 350 Aluminum, Gen.II, "LT4" 12556743 99 325 Aluminum, Gen.III, 5.3L truck, van 12558059 97 305 1.84/1.50 Vortec, truck 12558062 98 350 1.94/1.50 68cc L31 Vortec, 170cc Intake port, truck 12558162 01 & UP 496 Gen.VII Vortec 8100 8.1L truck 12558806 97-98 350 68cc Aluminum, Gen.III, "LS1" 12559853 99-up 350 68cc Aluminum, Gen.III, "LS1" 12559862 99-00 Aluminum, GEN.III, 4.8/5.3L 12559895 00-up 325 Aluminum, Gen.III, Vortec, 5.3L 12560241 98-01 454 Vortec 7400 100cc chambers Oval Port 12561706 44565 Aluminum, Gen.III, 5.3L 12561873 99-01 364 71cc Iron, Gen.III 12562317 44565 364 71cc Aluminum, Gen.III 12562932 91-95 454/502 Oval Port truck crate motor 118cc chambers 12562934 00 & UP 502 GenVI Marine 12564241 00-up 350 68cc Aluminum, Gen.III, "LS1" 12564243 01-up 350/364 Aluminum, Gen.III, "LS6", "LS2" 12572035 44565 364 71cc Aluminum, Gen.III, 6.0L 14008856 79-81 267 14010201 82-85 305
Small Block Chevy Head Casting Numbers Post link: https://angf35eis.com/sbc-head-casting-numbers/ Casting number Year C.I.D. Valves Chamber Size Notes 14010516 80-86 350 14011034 Bowtie 64cc Iron, 184cc intake ports, angle plug, "Phase II head" 14011049 Bowtie 55cc Aluminum, 180cc intake port, angle plug, "Phase 6" 14011077 89-94 454 2.19/1.88 118cc Replacement Aluminum Rectangular port 295cc intake 14011083 55-86 350 1.94/1.50 64cc Crate motor for years indicated. 285/300HP 14014415 80-85 267/305 14014416 80-86 305 1.84/1.50 58cc 14014440 80 305 1.84/1.50 14019821 80-86 350 14019924 79-81 267 14019926 80-86 350 14020516 80-86 305/350 1.84/1.50 14020517 80 350 14020555 81 305 14020556 81 350 14022056 85 350 14022206 80 350 14022301 80-86 305 14022601 80-86 267/305 1.72/1.50; 1.84/1.50 53cc 14022801 80-86 305 14024816 350 1.94/1.50 76cc Gen.I crate motors 14025175 83-93 454 2.06/1.77 Open chamber Oval port 14034806 78-82 267 14034807 78-86 305 14034808 80-86 350 14034810 80-86 350 Truck
Small Block Chevy Head Casting Numbers Post link: https://angf35eis.com/sbc-head-casting-numbers/ Casting number Year C.I.D. Valves Chamber Size Notes 14034811 80-86 350 Truck 14039121 81-86 305 Truck 14039122 81-86 305 Truck 14044861 89-94 454 2.19/1.88 106cc Bowtie Aluminum Rectangular port 380cc intake 14071114 80-86 350 14075381 80-86 350 Truck 14079261 86 350 14081044 86-90 454 2.06/1.77 Open chamber Oval port 14081045 78-87 454 Oval Port Open chamber 14081052 85-87 366/427/454 Oval Port Open chamber 14085844 80-86 350 Truck 14085963 86 350 14088526 350 Aluminum, Gen.II, LT1 14089119 86-88 350 14092359 86-89 427 2.06/1.77 Open chamber Oval port 14092360 85-89 454 2.06/1.77 Open chamber Oval port 14094093 86-88 350 14096188 87-94 454 2.19/1.88 118cc Replacement Rectangular port 325cc intake 14096217 55-86 350 64cc Crate motor, 285/300hp, 72' or 90' center intake manifold bolt angels 14097088 89-date 502 2.19/1.88 118cc Replacement Rectangular port 325cc intake GEN V 14101081 87-95 305 14101083 87-up 350 64cc Gen.I, also used on crate motors, 285/300hp, 72' center manifold bolt ang 14101128 86-87 350 58cc Aluminum, angle plug 14101398 86-90 454 2.06/1.77 Open chamber Oval port 14102187 87-91 305 1.84/1.50 14102188 88- 93 350 centerbolt
Small Block Chevy Head Casting Numbers Post link: https://angf35eis.com/sbc-head-casting-numbers/ Casting number Year C.I.D. Valves Chamber Size Notes 14102191 87-up 350 14102193 87-up 305/350 1.94/1.50 22542525 Aluminum, Dart/Olds/Chevy, 14' or 17' race head 24502559 96-97 38cc Aluminum, Bowtie, "SB2", 1st version, "mirror ports", 196cc intake ports, 24502585 Olds/Chevy DRCE 2 Pro Stock aluminum 25500141 2.1/1.625 42cc Aluminum, Buick/Chevy, 10' race head, symmetrical ports, 235cc intake p 33417369 90-up 350 76cc Gen.I Goodwrench crate motor, Hecho en Mexico 25534351C 04-up 2.00/1.55 65cc cast iron Vortec head, Gen.I Bowtie, 175/65cc ports, small port head 25534371C 04-up 2.00/1.55 77cc cast iron Vortec head, Gen.I Bowtie, 206/77cc ports, large port head 370r3523 55 265 3740r997 57 283 2x4 & FI (exc.-283hp) 3782461X 60-63 283/327 62cc Camel hump, no accessory holes, larger 172/64cc port volumes 3932441X 69-70 350/400 80cc 3947041X 69-70 302/350 64cc Right angle casting identifier, 165cc intake port, accessory holes, good H 3973487X 71-72 350 1.94/1.50; 2.02/1.60 75cc 3986336X 71 350 76cc 3986339X 71 307/350 74cc 10129552 1987-95 350 cc 3874480 1960-67 238/327 1.72/1.50 69cc 3890462, 3891462 1962-68 302/327/350 2.02/1.60; 1.94/1.50 63.3cc Camel hump heads, no accessory holes 397041x 1969-70 1969-70 2.02/1.60 64cc right angle casting identifier. 3986339, and X 1968-79 307/350 1.72/1.50 74.5cc car, truck 398633x 350 1.94/1.50 76cc

More Related Content

PDF
2007 Arctic Cat 400 4X4 ATV Service Repair Manual
byhjjsenmd poiuik
 
PDF
Ford 1900 tractor service repair manual
byjknsmmem
 
PDF
2000 DODGE DURANGO Service Repair Manual
byhsemmd uksjemd
 
PDF
2007 Arctic Cat 650 H1 ATV Service Repair Manual
byjkjskemm rtert
 
PDF
Motor+d4 fa+1.5+cr di+16v+matrix
byOscar Oscar
 
PDF
2005 Arctic Cat 500 4x4 ATV Service Repair Manual.pdf
byrte638359
 
PDF
2002 Polaris 600 XC SP SNOWMOBILE Service Repair Manual
byjkmdmd yksejkdmm
 
PDF
2011 Nissan Rogue Service Repair Manual
bykjse
 
2007 Arctic Cat 400 4X4 ATV Service Repair Manual
byhjjsenmd poiuik
 
Ford 1900 tractor service repair manual
byjknsmmem
 
2000 DODGE DURANGO Service Repair Manual
byhsemmd uksjemd
 
2007 Arctic Cat 650 H1 ATV Service Repair Manual
byjkjskemm rtert
 
Motor+d4 fa+1.5+cr di+16v+matrix
byOscar Oscar
 
2005 Arctic Cat 500 4x4 ATV Service Repair Manual.pdf
byrte638359
 
2002 Polaris 600 XC SP SNOWMOBILE Service Repair Manual
byjkmdmd yksejkdmm
 
2011 Nissan Rogue Service Repair Manual
bykjse
 

Similar to Small Block Chevy Head Casting Numbers

PDF
Dersa diesel torque_specifications
byJavier Ancheta
 
PDF
2002 Arctic Cat ATV 375 4X4 Automatic Service Repair Manual
bykjdmjys
 
PDF
2002 Arctic Cat 400 4x4 ATV Service Repair Manual
byjkmjskem
 
PDF
2002 arctic cat atv 500 4x4 automatic tbx service repair manual
byfjjskekdmem
 
PDF
2002 arctic cat atv 500 4x4 automatic service repair manual
byfjkskekdmmenm
 
PDF
2002 arctic cat atv 375 2 x4 automatic service repair manual
byfjseazqkkdmmem
 
PDF
Especificaciones técnica (TORQUE) Engine torque specs 7 09
byJordan Felipe Cabrera Nuñez
 
PDF
Case 821 f tier 4 wheel loader service repair manual
byfjkskekdmmenm
 
PDF
Case 921 f tier 4 wheel loader service repair manual
byfjjskekdmem
 
PDF
Service manual for Case 821F, 921F Tier 4 wheel loader, PDF
byBest Manuals
 
PDF
Repuestos de Automoviles 2018 II TRIMESTRE
byjjgr1989
 
PDF
Case 845 b dhp tier 0 tier 1 tier 2 tier 3 graders service repair manual
byfjsekksmem
 
PDF
Case 865 b vhp tier 0 tier 1 tier 2 tier 3 graders service repair manual
byfjkekfmefmm
 
PDF
Case 845 b tier 0 tier 1 tier 2 tier 3 graders service repair manual
byfjsekksmem
 
PDF
Case 865 b awd tier 0 tier 1 tier 2 tier 3 graders service repair manual
byfjjskekksemmrt
 
PDF
Case 865 b tier 0 tier 1 tier 2 tier 3 graders service repair manual
byfjjsefkskemmm
 
PDF
Case 885 b awd tier 0 tier 1 tier 2 tier 3 graders service repair manual
byfjjsekkksekmm
 
PDF
Case 845 b tier 0 tier 1 tier 2 tier 3 graders service repair manual
byfjjskekskemmm
 
PDF
Case 885 b awd tier 0 tier 1 tier 2 tier 3 graders service repair manual
byfjsefkskekmm
 
PDF
Case 865 b vhp tier 0 tier 1 tier 2 tier 3 graders service repair manual
byfjjsefkskemmm
 
Dersa diesel torque_specifications
byJavier Ancheta
 
2002 Arctic Cat ATV 375 4X4 Automatic Service Repair Manual
bykjdmjys
 
2002 Arctic Cat 400 4x4 ATV Service Repair Manual
byjkmjskem
 
2002 arctic cat atv 500 4x4 automatic tbx service repair manual
byfjjskekdmem
 
2002 arctic cat atv 500 4x4 automatic service repair manual
byfjkskekdmmenm
 
2002 arctic cat atv 375 2 x4 automatic service repair manual
byfjseazqkkdmmem
 
Especificaciones técnica (TORQUE) Engine torque specs 7 09
byJordan Felipe Cabrera Nuñez
 
Case 821 f tier 4 wheel loader service repair manual
byfjkskekdmmenm
 
Case 921 f tier 4 wheel loader service repair manual
byfjjskekdmem
 
Service manual for Case 821F, 921F Tier 4 wheel loader, PDF
byBest Manuals
 
Repuestos de Automoviles 2018 II TRIMESTRE
byjjgr1989
 
Case 845 b dhp tier 0 tier 1 tier 2 tier 3 graders service repair manual
byfjsekksmem
 
Case 865 b vhp tier 0 tier 1 tier 2 tier 3 graders service repair manual
byfjkekfmefmm
 
Case 845 b tier 0 tier 1 tier 2 tier 3 graders service repair manual
byfjsekksmem
 
Case 865 b awd tier 0 tier 1 tier 2 tier 3 graders service repair manual
byfjjskekksemmrt
 
Case 865 b tier 0 tier 1 tier 2 tier 3 graders service repair manual
byfjjsefkskemmm
 
Case 885 b awd tier 0 tier 1 tier 2 tier 3 graders service repair manual
byfjjsekkksekmm
 
Case 845 b tier 0 tier 1 tier 2 tier 3 graders service repair manual
byfjjskekskemmm
 
Case 885 b awd tier 0 tier 1 tier 2 tier 3 graders service repair manual
byfjsefkskekmm
 
Case 865 b vhp tier 0 tier 1 tier 2 tier 3 graders service repair manual
byfjjsefkskemmm
 

Recently uploaded

PPTX
general awareness ppt which is useful for every individual cvvvvvvvvvvv
bygossaindivya
 
PPTX
Group E.pptx you doing today I will be good to hear that
byayushman0690
 
PPTX
ICICVT ppt .pptx
byRahulGhodake12
 
DOCX
NGTU.docxNGTU.docxNGTU.docxNGTU.docxNGTU.docx
bytzenyqlw89
 
PPTX
Why-Topographic-Mapping-Drones-Are-Essential-for-Modern-Surveying (1).pptx
byDrone LiDAR Mapping
 
PPTX
organ_systems_work_together_to_carry_out_essential_functions_of_an_organism_L...
byKenneth James Alamillo
 
PPTX
Active vs Passive.pptx COMPONENTS IN ELECTRONICS
byjaellovelie
 
DOCX
Introduction to 3 place To Old Gmail Accounts.docx
byhttps://topsellerit.com/product/buy-verified-paypal-accounts/
 
PDF
figure of speech all grades AND LITERARY DEVICES.pdf
bymeeraranju9319
 
PPTX
Copy of Robotic Process Automation (RPA) Project Proposal.pptx
bypimpalkarspc
 
PDF
1971 GER 53-Z International 824 Brochure Prospekt DE
byJibbeHeetkamp
 
PDF
Brochure_Accurate_actionable_data_Renishaw_Central_gen.pdf
bykeshawyes
 
PPTX
5-Union-dand-Intersection-of-Events.pptx
bydominicdaltoncaling2
 
PDF
Volvo L60f Engine Description Service Manual.pdf
byabjekGoogle
 
PPTX
Alan Lucas - [Template] [Template] [Template] ScienceFairProjectTemplate.pptx
byashleyvalentinal1994
 
PDF
l50D, l60D, l70D VOLVO Fuel System Service Manual
byabjekGoogle
 
PPTX
zone electrophoresis.pptxaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
bypremdharpawar650
 
PPTX
ecosystems_are_finite_and_have_limited_resources._Lesson_Quiz.pptx
byKenneth James Alamillo
 
PPTX
BAB 2 Sholat sunahppt materi PAI kelas 8
bysyafatrisul
 
PPTX
Nursing Care of Neonates.pptx jjjhhhhkkjjhgh
byssuserfcd826
 
general awareness ppt which is useful for every individual cvvvvvvvvvvv
bygossaindivya
 
Group E.pptx you doing today I will be good to hear that
byayushman0690
 
ICICVT ppt .pptx
byRahulGhodake12
 
NGTU.docxNGTU.docxNGTU.docxNGTU.docxNGTU.docx
bytzenyqlw89
 
Why-Topographic-Mapping-Drones-Are-Essential-for-Modern-Surveying (1).pptx
byDrone LiDAR Mapping
 
organ_systems_work_together_to_carry_out_essential_functions_of_an_organism_L...
byKenneth James Alamillo
 
Active vs Passive.pptx COMPONENTS IN ELECTRONICS
byjaellovelie
 
Introduction to 3 place To Old Gmail Accounts.docx
byhttps://topsellerit.com/product/buy-verified-paypal-accounts/
 
figure of speech all grades AND LITERARY DEVICES.pdf
bymeeraranju9319
 
Copy of Robotic Process Automation (RPA) Project Proposal.pptx
bypimpalkarspc
 
1971 GER 53-Z International 824 Brochure Prospekt DE
byJibbeHeetkamp
 
Brochure_Accurate_actionable_data_Renishaw_Central_gen.pdf
bykeshawyes
 
5-Union-dand-Intersection-of-Events.pptx
bydominicdaltoncaling2
 
Volvo L60f Engine Description Service Manual.pdf
byabjekGoogle
 
Alan Lucas - [Template] [Template] [Template] ScienceFairProjectTemplate.pptx
byashleyvalentinal1994
 
l50D, l60D, l70D VOLVO Fuel System Service Manual
byabjekGoogle
 
zone electrophoresis.pptxaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
bypremdharpawar650
 
ecosystems_are_finite_and_have_limited_resources._Lesson_Quiz.pptx
byKenneth James Alamillo
 
BAB 2 Sholat sunahppt materi PAI kelas 8
bysyafatrisul
 
Nursing Care of Neonates.pptx jjjhhhhkkjjhgh
byssuserfcd826
 

Small Block Chevy Head Casting Numbers

  • 1.
    Small Block ChevyHead Casting Numbers Post link: https://angf35eis.com/sbc-head-casting-numbers/ Casting number Year C.I.D. Valves Chamber Size Notes 176450 75-76 262 - 305 1.71 / 1.5 330545 73 350 2.02/1.60 76cc 330862 71-73 400 1.94/1.50 330864 70-81 366/427/454 2.06/1.77 Open chamber Oval port 330865 70-84 366/427/454 2.06/1.77 Open chamber Oval port 330866 68-78 366/427 Oval Port Open chamber 330867 68-73 427 Oval Port Open chamber 333881 74-75 350 2.02/1.60 76cc 333882 74-80 350/400 76cc 336768 73-76 427 Oval Port Open chamber 336781 73-85 454 2.06/1.77 113cc Oval port 340292 70's 64cc angle plug, over the counter 343771 68-85 366/427/454 2.06/1.77 Open chamber Oval port 343772 76-84 366/427/454 2.06/1.77 Open chamber Oval port 343783 75-78 454 2.06/1.77 Open chamber Oval port 346236 75-87 454 2.06/1.77 113cc Oval port 346238 75-87 454 2.06/1.77 113cc Oval port 352625 70-76 454 Oval Port Open chamber 353049 70-73 454 2.06/1.77 113cc Oval port 354434 75-79 262/267/305 60cc 358741 76-79 305 359944 71-79 350 1.94/1.50 76cc 366765 73-84 427/454 2.06/1.77 Open chamber Oval port 367450 75-76 262 376445 77-85 350 76cc 376450 75-81 262/267/305 60cc 6 or 7 exhaust bolt holes
  • 2.
    Small Block ChevyHead Casting Numbers Post link: https://angf35eis.com/sbc-head-casting-numbers/ Casting number Year C.I.D. Valves Chamber Size Notes 376455 77-85 350 376495 Jun-79 350 1.94/1.50 76cc 383882 71-73 400 399380 70-73 400 76cc 426424 72-82 305/350/400 1.72/1.50 458624 69-84 350 1.94/1.50 76cc 458642 75-84 350 460703 78-80 350 1.94/1.50 76cc 462614 77-79 305 60cc 462624 75-86 350/400 1.72/1.50; 194/1.50; 2.02/1.60 76cc 464033 76-86 350 1.94/1.50 76cc 464036 76-86 350 1.94/1.50 76cc 468642 76-up 350/400 471513 79 267/350 472424 76-79 305 1.72/1.50 473328 68-85 366 2.06/1.77 Open chamber Oval port 474213 78-82 305 1.72/1.50 474214 78-82 350 1.94/1.50 76cc 475590 78-82 400 1.94/1.50 76cc 517513 79 267/350 1816887 63 283 Made in "Canada" GMC Truck 3030817 74 400 2-bolt 3238882 68-69 350 1.94/1.50 76cc 3297185 57-67 307/327/350 1.72/1.50 3391635 68-76 305
  • 3.
    Small Block ChevyHead Casting Numbers Post link: https://angf35eis.com/sbc-head-casting-numbers/ Casting number Year C.I.D. Valves Chamber Size Notes 3636839 55 265 3703523 55 265 1.72/1.50 195HP 3703524 55 265 3713358 55-56 265 3713569 55-56 265 3720991 56-57 265 3725306 56 265 3727185 69-73 307 3731262 56 265 1.72/1.50 Dual Quad Corvette 3731539 57 283 283 HP FI 3731544 57-61 283 3731548 57-62 283 3731554 57-62 283 3731556 57 283 Made in "Canada" Truck 3731762 56 265 Vette 2x4 Carbs 3732791 58 348 3737465 60-61 283 3737739 57-62 283 283 and 283 Corvette F.I. 3737775 62-67 283/327 3740997 57 283 1.72/1.50 Dual Quad FI & 4-brl 220-270HP 3743056 58 283 3743096 62-67 327 GMC Truck 3747363 57-61 283 3747460 59-67 283/327 70cc 3748056 62-67 327 1.72/1.50 3748720 57-58 283 1.72/1.50 Dual Quad FI & 4-brl Corvette
  • 4.
    Small Block ChevyHead Casting Numbers Post link: https://angf35eis.com/sbc-head-casting-numbers/ Casting number Year C.I.D. Valves Chamber Size Notes 3748770 58 283 3748772 58-61 283 3755537 57-62 283 3755538 59 283 1.72/1.50 250-290HP FI Corvette 3755539 58-62 283 3755549 57-62 283 3755550 59 283 3755585 62-67 327 GMC Truck 3755896 62-64 283 1.72/1.50 3756519 57-62 283 283 and 283 Corvette F.I. 3758379 59-61 348 3759256 58 348 3760116 59 283 1.72/1.50 Dual Quad FI & 4-brl Corvette 3767460 59-60 283 3767462 62-67 327 3767465 59-61 283 3767738 59-61 348 3767754 59-61 283 60cc 3767792 60-64 283 3770126 67-70 327/350 1.94/1.50 3773012 55 265 1.72/1.50 3774634 64-67 327 1.72/1.50 3774682 60-64 283/327 70cc 3774684 62-64 327 75cc 3774690 58 283 1.72/1.50 FI Corvette 3774692 58-64 283 60cc
  • 5.
    Small Block ChevyHead Casting Numbers Post link: https://angf35eis.com/sbc-head-casting-numbers/ Casting number Year C.I.D. Valves Chamber Size Notes 3776434 64-67 327 3781147 60-61 348 High Perf 3782461 64-66 327 62cc Camel hump, no accessory holes, 160/62cc port volumes 3782462 67 327 1.94/1.50 Corvette 2.02/1.60 3782870 62-67 327 327 and 327 Corvette 3782879 62-67 327 327 and 327 Corvette 3789817 62-67 327 327 and 327 Corvette 3789935 57-62 283 3790721 64-67 283 3792563 65-67 327 3795586 61 409 360HP 3795893 58-72 283 - 307 - 327 3795896 63-65 283 60cc 3796896 64-67 283 1.72/1.50 60cc 60cc Chevy II 3798996 63-67 327 3814462 67 350 1.94/1.50 3814480 60-67 283/327 1.72/1.50 70cc 3814482 62-67 283/327/350 75cc 3814690 62-64 409 High Perf 3817680 63-67 283/327 3817681 62-67 327 3817682 61-62 283 3819333 62-65 348/409 3830817 63-65 409 340HP 3836839 55 265 3836842 57-67 283/327
  • 6.
    Small Block ChevyHead Casting Numbers Post link: https://angf35eis.com/sbc-head-casting-numbers/ Casting number Year C.I.D. Valves Chamber Size Notes 3836924 63-64 283 1.72/1.50 3836942 58-62 283 1.72/1.50 3837063 58-62 283 1.72/1.50 3837064 56-62 265/283 3837065 55-56 265 Truck 3837731 63 409 High Perf Z-11 3837739 57 283 283 and 283 truck 3837775 62-67 283/327 1.72/1.50 3848720 57-58 283 3849820 65 327 1.72/1.50 3849852 57-67 283 3849935 65-67 283 3852172 62-64 327 3852583 65 409 400HP 3854520 62-67 283/327 1.72/1.50 3855961 68-76 350 2-bolt 3856206 65-66 396 2.06/1.77 98cc 98cc Oval port 3856208 65 396 2.06/1.77 109cc 109cc Z-16/L-37 Rectangular port 3856213 66-70 366 2.06/1.77 Closed chamber Oval port 3856260 68 396 Oval Port Closed chamber 3858174 65-67 327 3864812 57-67 283 283 and 283 truck 3867802 57-60 283 1.72/1.50 FI Corvette 3872702 66 396/427 2.06/1.77 98cc 98cc Oval port L-34/L-35/L-36 3873064 56-57 265 1.72/1.50 3873858 66-67 396/427 2.06/1.77 109cc 109cc L-78/L-72 Rectangular port
  • 7.
    Small Block ChevyHead Casting Numbers Post link: https://angf35eis.com/sbc-head-casting-numbers/ Casting number Year C.I.D. Valves Chamber Size Notes 3876132 62-67 327 327 and 327 Corvette 3876487 71-73 350 1.94/1.50 76cc 3876775 60-67 283/327 75cc 3876875 66-70 427 2.06/1.77 Closed chamber Oval port 3878775 64-67 327 1.72/1.50 3884520 60-67 283 60cc Some marked "Made in Canada", also used by Studebaker 3890462 66-67 302/327/350 64cc Camel hump, no accessory holes 3891462 62-67 302/327/350 1.94/1.50 2.02/1.60 64cc 3891492 64-67 327 1.94/1.50 3892657 65-67 327 3896944 65-67 283 3901068 87-up 350 64cc Crate motor, 285HP 3904390 66-67 396/427 2.06/1.77 98cc 98cc Oval port L-34/L-35/L-36 3904391 65-67 396/427 2.06/1.77 107cc 107cc L-78/L-71/L-72 Rectangular port 3904392 67 427 2.19/1.88 106cc 106cc L-88/L-89 Aluminum Rectangular port 3904393 66-68 366 2.06/1.77 Closed chamber Oval port 3908952 67 427 Oval Port Open chamber 3909802 66-67 396/427 2.06/1.77 100cc 100cc Oval port L-34/L-35/L-36/L-68 3911011 68 327 3911032 68 307/327 70cc 3912264 58-62 283 3912265 63-64 283 3912291 68-70 302/327/350 1.94/1.50 2.02/1.60 64cc Doubble humps 3912311 65-67 327 3912313 65-67 327 3914636 68-73 307
  • 8.
    Small Block ChevyHead Casting Numbers Post link: https://angf35eis.com/sbc-head-casting-numbers/ Casting number Year C.I.D. Valves Chamber Size Notes 3914660 68-69 327 327 and 327 Corvette 3914678 68-69 327 327 and 327 Corvette 3917215 67-69 396/427 2.06/1.77 100cc 100cc Oval port L-34/L-35 3917219 66-70 366/427 2.06/1.77 Closed chamber Oval port 3917264 67 302 2.02/1.60 64cc 64cc Z-28 3917290 67-68 307/327 3917291 67-68 302/327/350 64cc Camel hump, no accessory holes 3917292 68 327/350 64cc Camel hump 3917293 67-68 307/327 75cc 3919840 67-69 396/427 2.06/1.77 107cc L-78/L-71/L-72 Rectangular port 3919842 68-69 396/427 2.19/1.88 106cc L-88/L-89 Aluminum Rectangular port 3921175 66 327 1.94/1.50 3923441 67-76 350 1.94/1.50 76cc 3927185 69-76 307/327/350 70cc 3927186 69-70 302/350 64cc Camel hump, has accessory holes 3927187 69-70 350 64cc Camel hump, has accessory holes 3927188 69 327 74cc 3928454 68 307 1.72/1.50 3928455 68 302/327 2.02/1.60 64cc 325 & 350HP 3928494 68 327 2.02/1.60 64cc 350HP 4-brl 3928495 68 327 1.72/1.50 3931063 69-70 396/427 2.06/1.77 100cc Oval port L-34/L-35 3931633 68-73 307 3931635 68-76 350 3931637 68-69 327 3931638 68 327 Truck
  • 9.
    Small Block ChevyHead Casting Numbers Post link: https://angf35eis.com/sbc-head-casting-numbers/ Casting number Year C.I.D. Valves Chamber Size Notes 3931639 68 302 2.02/1.60 64cc 3932373 68-73 307 3932386 68-76 327 - 350 350 4-bolt and 327 Corvette 3932388 68-76 350 2-bolt 3932441 69-70 350 76cc 3932454 69-73 307 3932882 76 400 3933148 68-73 350 76cc 3933149 69-70 427 2.06/1.77 122cc Oval port 3935401 68-76 427 Oval Port Open chamber 3941174 68 327 1.72/1.50 3946074 69-71 396/454 2.19/1.88 118cc L-88/ZL-1 Aluminum Rectangular port 3946812 69 350 3946813 69-79 350 Truck 3947014 68-70 350 3947040 68 327 64cc Right angle casting identifier, good HP head, used in trucks, no accessory 3947041 69-70 302/350 64cc Right angle casting identifier, accessory holes, good HP head 3951509 74 400 2-bolt 3951511 70-73 400 4-bolt 3951598 70 400 76cc 3956618 68-76 350 4-bolt 3958618 68-76 350 2-bolt 3961598 70-76 400 1.94/1.50 76cc 3964280 66-70 427/454 2.06/1.77 Closed chamber Oval port 3964286 350 3964290 69-70 396/402/427/454 2.06/1.77 100cc Oval port
  • 10.
    Small Block ChevyHead Casting Numbers Post link: https://angf35eis.com/sbc-head-casting-numbers/ Casting number Year C.I.D. Valves Chamber Size Notes 3964291 69-70 396/402/427/454 2.19/1.88 108cc L-78/L-71/L-72/LS-6 Rectangular port 325cc intake 3964292 70 454 2.19/1.88 109cc LS-6 Rectangular port 3965198 69 396 2.06/1.77 Open chamber Oval port 3965742 70 350 over the counter, angle plug L98 style 3970010 68-76 350 4-bolt 3970020 68-73 307 3970126 67-71 327/350 3970721 64-67 283 3971293 68-69 307 - 327 3973195 71-73 400 1.94/1.50 76cc 3973370 69-70 350 64cc over the counter in US, Canadian 350/300hp production use in Pontiac, s 3973414 70 350 64cc Camel Hump, LT1-350/370hp 3973487 71-72 350 1.94/1.5; 2.02/1.6 75cc was also used on '71 350/330hp LT1 3973493 71-72 400 76cc 3975950 68-70 366/427 2.06/1.77 Closed chamber Oval port 3981462 62-67 302-327-350 3986133 70-85 366/427 2.06/1.77 Closed chamber Oval port 3986136 70-84 366/427 2.06/1.77 Closed chamber Oval port 3986316 71 350 76cc 3986330 69-79 350 1.94/1.50 76cc 3986336 71 350 76cc 3986339 71 307/350 74cc 3986388 68-76 307/350 3990941 68-82 307/350 3991492 70 350 64cc LT1, Camel hump, accessory holes, straight plug 3993820 71 402/454 2.06/1.77 113cc Oval port
  • 11.
    Small Block ChevyHead Casting Numbers Post link: https://angf35eis.com/sbc-head-casting-numbers/ Casting number Year C.I.D. Valves Chamber Size Notes 3994025 71 454 2.19/1.88 118cc LS-6 Rectangular port 3994026 71 454 2.19/1.88 118cc LS-6 Rectangular port 3997417 71 307 1.72/1.50 3998916 72 350 76cc also used w/'72 350 LT1, big valve, screw in studs 3998920 72-73 350 3998991 72-73 307/350 75cc 3998993 72-73 307/350 75cc 3998997 72-73 350/400 76cc chambers 3999241 72 402/454 2.06/1.77 113cc 113cc Oval port 4079261 75 350 6258723 71 454 2.19/1.88 118cc LS-6 Rectangular port 6259425 68-76 350 2-bolt 6259515 73 350 6260855 73-75 350 1.94/1.50 76cc 6260856 73-76 350 1.94/1.50 76cc 6272070 73 350 6272292 71 402/454 2.06/1.77 Open chamber Oval port 6272990 71-94 454 2.19/1.88 118cc Replacement Rectangular port 325cc intake 10033867 62cc Aluminum, over the counter Pontiac 23' head, angle plug, 196cc intake po 10045427 Pontiac/Chevy Aluminum, 91cc chamber Large Rectangle Port 10045434 55cc Aluminum, Over the counter Pontiac 15' head, angle plug, raised runner, 10049875 Pontiac/Chevy Aluminum Small Rectangle port 10051101 55cc Aluminum, Bowtie, angle plug, raised runner, 196cc intake port 10051128 90-94 454 2.19/1.88 72cc Bowtie Aluminum Rectangular port 400cc intake 10052902 427 Oval Port Open chamber 10065202 87-95 350 Truck
  • 12.
    Small Block ChevyHead Casting Numbers Post link: https://angf35eis.com/sbc-head-casting-numbers/ Casting number Year C.I.D. Valves Chamber Size Notes 10065203 87-95 350 Truck 10065204 87-95 350 10065205 87-95 305 10065206 87-95 350 10065207 87-95 305 10088113 88-up 350 194/1.50 58cc Aluminum, angle plug, raised "D" port exhaust 10093328 61cc Aluminum, Over the counter Pontiac 15' head, 224cc ports, "roll over" hea 10101136 91-94 454 2.06/1.77 Open chamber Oval port 10101140 91-01 366/427 Oval Port Closed chamber 10106178 90 350 Aluminum, LT5, ZR1, DOHC, 32-Valve, pass. Side. 10106179 90 350 Aluminum, LT5, ZR1, DOHC, 32-Valve, drivers Side. 10110810 91-up 350 65cc Gen. 1 10114156 91-01 454 Oval Port Open chamber 10120928 87-95 350 10121033 78-88 454 2.06/1.77 Open chamber Oval port 10125320 94-96 350 Gen.II LT1, cast iron version, used on "9C1" Police package, Impala SS, 10128374 92-up 350 53cc Aluminum, Gen.II LT1, angle plug, reverse flow cooling, 175/68cc ports 10134352 Bowtie 45cc Aluminum, angle plug, "low" port, 223cc intake port, 18' race head 10134363 Bowtie This casting # has been used in many different versions of this aluminum 18' and 15' Bowtie race head. Different chamber volumes, port volumes, port locations, valve sizes, etc. were used. Check this casting carefully to determine which features it may have. There are at least 6 different versions as of 11/99 10141279 96-01 454 100cc Vortec 7400 chambers Oval Port 10147898 95-98 350 Gen.I crate motor
  • 13.
    Small Block ChevyHead Casting Numbers Post link: https://angf35eis.com/sbc-head-casting-numbers/ Casting number Year C.I.D. Valves Chamber Size Notes 10159550 87-95 350 10159551 87-95 305 10159552 87-95 350 10159553 87-95 305 10174389 91-94 350 Aluminum, LT5, ZR1, DOHC, 32-Valve, pass. Side. 10174390 91-95 350 Aluminum, LT5, ZR1, DOHC, 32-Valve, drivers Side. 10185040 Bowtie 45cc Aluminum, Bowtie, 1st version, symmetrical ports, 263cc intake ports, spl 10205245 93 350 68cc Aluminum, Gen.II LT1, reverse flow cooling, 175/68cc port volumes 10207643 94-96 350 68cc Aluminum, Gen.II LT1, reverse flow cooling, 175/68cc port volumes 10208890 94-96 265 Gen.II, L99, 4.3 Liter V8, cast iron, reverse flow cooling 10215339 97 350 68cc Aluminum, Gen.III, LS1, 10225121 94-95 350 Aluminum, LT5, ZR1, DOHC, 32-Valve, Drivers Side. 10225122 95 350 Aluminum, LT5, ZR1, DOHC, 32-Valve, Pass. Side. 10239902 96-up 350 54.4cc Aluminum, Gen.II LT4, reverse flow cooling, 195cc Intake port, angle plug 10239906 96-up 350 1.94/1.50 Vortec 5700, "L31", 170cc Intake port 10487052 77-90 366 Oval Port Open chamber 12352783 79-93 454 2.06/1.77 Open chamber Oval port 12363391 Oval Port Bowtie Aluminum Signature Series 12363401 Rectangle Port Bowtie Aluminum Signature Series 12367712 99-up 2.00/1.55 62cc Aluminum, FastBurn, 210cc Intake port 12367713 99-up 2.00/1.55 62cc Aluminum, Fast Burn used on ZZ430 crate motor, 210cc Intake Port 12480005 2000 2.125/1.625 38cc Aluminum, Ls1"GTZ", angle plug, 12480011 97-up 48cc Aluminum, "SB2.2" 2nd version, "mirror ports" revised valve angles and p 12480034 2.02/1.60 64cc Bowtie Phase III Angle plug 184 cc intake runner 12506450 87-95 350 12509859 87-94 305
  • 14.
    Small Block ChevyHead Casting Numbers Post link: https://angf35eis.com/sbc-head-casting-numbers/ Casting number Year C.I.D. Valves Chamber Size Notes 12516852 87-95 350 12529742 95-96 265 Gen.II, L99, cast iron 12551561 96 350 Aluminum, Gen.II, "LT1" 12552520 97-up 305 Vortec, truck 12554290 94-96 350 Gen.II LT1, cast iron version, used on "9C1" Police package, Impala SS, 12554291 95-96 265 Gen.II, "l99" CAST IRON 12555690 96 350 Aluminum, Gen.II, "LT4" 12556743 99 325 Aluminum, Gen.III, 5.3L truck, van 12558059 97 305 1.84/1.50 Vortec, truck 12558062 98 350 1.94/1.50 68cc L31 Vortec, 170cc Intake port, truck 12558162 01 & UP 496 Gen.VII Vortec 8100 8.1L truck 12558806 97-98 350 68cc Aluminum, Gen.III, "LS1" 12559853 99-up 350 68cc Aluminum, Gen.III, "LS1" 12559862 99-00 Aluminum, GEN.III, 4.8/5.3L 12559895 00-up 325 Aluminum, Gen.III, Vortec, 5.3L 12560241 98-01 454 Vortec 7400 100cc chambers Oval Port 12561706 44565 Aluminum, Gen.III, 5.3L 12561873 99-01 364 71cc Iron, Gen.III 12562317 44565 364 71cc Aluminum, Gen.III 12562932 91-95 454/502 Oval Port truck crate motor 118cc chambers 12562934 00 & UP 502 GenVI Marine 12564241 00-up 350 68cc Aluminum, Gen.III, "LS1" 12564243 01-up 350/364 Aluminum, Gen.III, "LS6", "LS2" 12572035 44565 364 71cc Aluminum, Gen.III, 6.0L 14008856 79-81 267 14010201 82-85 305
  • 15.
    Small Block ChevyHead Casting Numbers Post link: https://angf35eis.com/sbc-head-casting-numbers/ Casting number Year C.I.D. Valves Chamber Size Notes 14010516 80-86 350 14011034 Bowtie 64cc Iron, 184cc intake ports, angle plug, "Phase II head" 14011049 Bowtie 55cc Aluminum, 180cc intake port, angle plug, "Phase 6" 14011077 89-94 454 2.19/1.88 118cc Replacement Aluminum Rectangular port 295cc intake 14011083 55-86 350 1.94/1.50 64cc Crate motor for years indicated. 285/300HP 14014415 80-85 267/305 14014416 80-86 305 1.84/1.50 58cc 14014440 80 305 1.84/1.50 14019821 80-86 350 14019924 79-81 267 14019926 80-86 350 14020516 80-86 305/350 1.84/1.50 14020517 80 350 14020555 81 305 14020556 81 350 14022056 85 350 14022206 80 350 14022301 80-86 305 14022601 80-86 267/305 1.72/1.50; 1.84/1.50 53cc 14022801 80-86 305 14024816 350 1.94/1.50 76cc Gen.I crate motors 14025175 83-93 454 2.06/1.77 Open chamber Oval port 14034806 78-82 267 14034807 78-86 305 14034808 80-86 350 14034810 80-86 350 Truck
  • 16.
    Small Block ChevyHead Casting Numbers Post link: https://angf35eis.com/sbc-head-casting-numbers/ Casting number Year C.I.D. Valves Chamber Size Notes 14034811 80-86 350 Truck 14039121 81-86 305 Truck 14039122 81-86 305 Truck 14044861 89-94 454 2.19/1.88 106cc Bowtie Aluminum Rectangular port 380cc intake 14071114 80-86 350 14075381 80-86 350 Truck 14079261 86 350 14081044 86-90 454 2.06/1.77 Open chamber Oval port 14081045 78-87 454 Oval Port Open chamber 14081052 85-87 366/427/454 Oval Port Open chamber 14085844 80-86 350 Truck 14085963 86 350 14088526 350 Aluminum, Gen.II, LT1 14089119 86-88 350 14092359 86-89 427 2.06/1.77 Open chamber Oval port 14092360 85-89 454 2.06/1.77 Open chamber Oval port 14094093 86-88 350 14096188 87-94 454 2.19/1.88 118cc Replacement Rectangular port 325cc intake 14096217 55-86 350 64cc Crate motor, 285/300hp, 72' or 90' center intake manifold bolt angels 14097088 89-date 502 2.19/1.88 118cc Replacement Rectangular port 325cc intake GEN V 14101081 87-95 305 14101083 87-up 350 64cc Gen.I, also used on crate motors, 285/300hp, 72' center manifold bolt ang 14101128 86-87 350 58cc Aluminum, angle plug 14101398 86-90 454 2.06/1.77 Open chamber Oval port 14102187 87-91 305 1.84/1.50 14102188 88- 93 350 centerbolt
  • 17.
    Small Block ChevyHead Casting Numbers Post link: https://angf35eis.com/sbc-head-casting-numbers/ Casting number Year C.I.D. Valves Chamber Size Notes 14102191 87-up 350 14102193 87-up 305/350 1.94/1.50 22542525 Aluminum, Dart/Olds/Chevy, 14' or 17' race head 24502559 96-97 38cc Aluminum, Bowtie, "SB2", 1st version, "mirror ports", 196cc intake ports, 24502585 Olds/Chevy DRCE 2 Pro Stock aluminum 25500141 2.1/1.625 42cc Aluminum, Buick/Chevy, 10' race head, symmetrical ports, 235cc intake p 33417369 90-up 350 76cc Gen.I Goodwrench crate motor, Hecho en Mexico 25534351C 04-up 2.00/1.55 65cc cast iron Vortec head, Gen.I Bowtie, 175/65cc ports, small port head 25534371C 04-up 2.00/1.55 77cc cast iron Vortec head, Gen.I Bowtie, 206/77cc ports, large port head 370r3523 55 265 3740r997 57 283 2x4 & FI (exc.-283hp) 3782461X 60-63 283/327 62cc Camel hump, no accessory holes, larger 172/64cc port volumes 3932441X 69-70 350/400 80cc 3947041X 69-70 302/350 64cc Right angle casting identifier, 165cc intake port, accessory holes, good H 3973487X 71-72 350 1.94/1.50; 2.02/1.60 75cc 3986336X 71 350 76cc 3986339X 71 307/350 74cc 10129552 1987-95 350 cc 3874480 1960-67 238/327 1.72/1.50 69cc 3890462, 3891462 1962-68 302/327/350 2.02/1.60; 1.94/1.50 63.3cc Camel hump heads, no accessory holes 397041x 1969-70 1969-70 2.02/1.60 64cc right angle casting identifier. 3986339, and X 1968-79 307/350 1.72/1.50 74.5cc car, truck 398633x 350 1.94/1.50 76cc