Cylinder Heads

Cylinder Heads
Casting Number CID Years Valves Comments
10065202 350 82-86 1.94/1.50 76cc
10065203 350 82-86 1.94/1.50 76cc
10065204 350 82-86 1.94/1.50 76cc
10065205 305 82-86 1.84/1.50 58cc
10065206 350 82-86 1.94/1.50 76cc
10065207 305 82-86 1.84/1.50 58cc
10088113 350 86-92 1.94/1.50 58cc Corvette Aluminum
10120928 350 87-94 1.94/1.50 76cc
10125320 350 94-96 2.00/1.55 Gen II LT1 cast iron version,
10128374 350 92-97 2.00/1.55 Gen II LT1 53 CC angle plug aluminum
10134363 Bowtie High Port 60 CC 210 ~ 258 CC
10159550 350 87-94 1.94/1.50 76cc
10159551 305 87-94 1.84/1.50 58cc
10159552 350 87-94 1.94/1.50 76cc
10159553 305 87-94 1.84/1.50 58cc
10185040 Splayed vavle head 45 CC angle plug
10205245 350 93 2.00/1.55 Gen II LT1 angle plug aluminum reverse flow cooling 175/68cc ports
10207643 350 94-97 2.00/1.55 Gen II LT1 angle plug aluminum reverse flow cooling 175/68cc ports
10208890 265 94-96 2.00/1.55 Gen II L99 4.3 Liter V-8, cast iron, reverse flow
10215339 346 97 2.00/1.55 Gen III LS1 aluminum 68cc
10239906 305/350 96-up 1.94/1.50 68cc Vortec
12367713 2.00/1.55 GM Fast burn 62 CC 210 CC intake runner angle plug Vortec
12480005 346 0 2.125/1.625 Gen III LS1 "GTZ" aluminum 38cc angle plug
12480011 SB2.2 head 48 ~ 54 CC angle plug 284 CC intake runner Bare heads.
12480034 2.02/1.60 Bowtie Phase III 64cc Angle plug 184 cc intake runner
12506450 350 87-94 1.94/1.50 76cc
12509859 305 87-94 1.84/1.50 58cc
12516852 350 87-94 1.94/1.50 76cc
12551561 350 96 2.00/1.55 Gen II LT1 angle plug aluminum reverse flow cooling
12552520 305 97-99 1.84/1.5 Vortec Truck L-35
12554290 350 94-96 2.00/1.55 Gen II LT1 cast iron version
12555690 350 96 2.00/1.55 Gen II LT-4 55 CC 195 CC intake runner Angle Plug
12555690 350 96 2.00/1.55 Gen II LT-4 55 CC 195 CC intake runner Angle Plug
12556743 325 99 & UP 2.00/1.55 Gen III 5.3L aluminum truck and van
12558059 305 97 1.84/1.5 L-35 Vortec truck
12558062 350 98 1.94/1.5 L-31 Vortec truck 64cc chambers 170cc intake port
12558062 305/350 96-up 1.94/1.50 68cc Vortec
12558806 346 97-98 2.00/1.55 Gen III LS1 aluminum 68cc
12559853 346 99 & UP 2.00/1.55 Gen III LS1 aluminum 68cc
12559895 325 00 & UP 2.00/1.55 Gen III 5.3L aluminum
12564241 346 00 & UP 2.00/1.55 Gen III LS1 aluminum 68cc
12564243 346 2 2.00/1.55 Gen III LS6 aluminum 68cc
12564243 346 2.00/1.55 Gen III LS-6 vette head 65 CC
14008856 267 79-81 1.71/1.50
14010201 305 82-85 1.84/1.50 58cc
14011034 350 80-up 2.02/1.60 64cc Bowtie
14011049 350 82-up 2.02/1.60 64cc Bowtie Aluminum
14014415 267/305 80-85 1.71/1.50 64cc Crack prone
14014416 267/305/350 80-86 1.84/1.50 64cc Crack prone
14019821 350 80-86 1.84/1.50 76cc
14019924 267 79-81 1.71/1.50
14019926 305 80-86 1.84/1.50
14020516 305/350 80-86 1.84/1.50
14020517 350 80-86 1.84/1.50 76cc
14020555 305 81
14020556 350 81
14022206 350 80 1.94/1.50 76cc
14022301 305 80-86 1.84/1.50 58cc
14022601 267/305 79-86 1.72/1.50 1.84/1.50 58cc
14022801 305 80-86 1.72/1.50 58cc
14034806 267 78-82 1.72/1.50
14034807 305 78-82 1.72/1.50
14034808 350 80-86 1.84/1.50 76cc
14034810 350 80-86
14034811 350 80-86
14039121 305 81-86
14039122 305 81-86
14071114 350 80-86
14075381 350 80-86
14079261 350 82-85
14085844 350 80-86
14089119 350 80-86
14096217 350 90-up 1.94/1.50 64cc Crate heads
14101081 305 87-94 1.84/1.50 58cc
14101083 350 88-94 1.94/1.50 64 cc
14102187 305 87-95 1.84/1.50 58cc
14102191 305/350 87-95 1.84/1.50
14102193 305/350 87-95 1.84/1.50
24502559 96-97 Bowtie SB2 1st design"mirror ports" aluminum
25534351C 2.00/1.55 Vortec Bowtie 65 CC 175 cc intake runner
25534371C 2.00/1.55 Vortec Bowtie 65 CC 206 cc intake runner
3238882 350 68-69 1.94/1.50 76cc
3297185 307/327/350 57-67 1.72/1.50
330545 350/400 71-75 2.02/1.60 76cc
330862 400 71-73 1.94/1.50
333881 350 71-76 2.02/1.60 76cc
333882 350/400 70-80 1.94/1.50 76cc
340292 350 73-80 2.02/1.60 64cc Angle plugs turbo' head No heat riser
354434 262/305 75-80 1.72/1.50 60cc
358741 262/305 71--79 1.72/1.50
359944 350 71-79 1.94/1.50 76cc
3636839 265 55 1.72/1.50
3703523 265 55 1.72/1.50 195HP
3713358 265 55-56 1.72/1.50
3713569 265 55-56 1.72/1.50
3725306 265 56 1.72/1.50 210HP Corvette
3731262 265 56 1.72/1.50 Dual Quad Corvette
3731539 283 57-66 1.72/1.50 283HP Corvette
3731544 265/283 55-61 1.72/1.50 Dual Quad Corvette
3731554 265/283 55-63 1.72/1.50
3731556 283 57 1.72/1.50
3731762 265 56 1.72/1.50 Dual Quad Corvette
3737775 283/327 62-67 1.72/1.50
3740997 283 57 1.72/1.50 Dual Quad FI & 4-brl 220-270HP
3743056 283 58 1.72/1.50
3743096 327 62-67 1.72/1.50
3747363 265 57-62 1.72/1.50
3748056 327 62-67 1.72/1.50
3748720 283 57-58 1.72/1.50 Dual Quad FI & 4-brl Corvette
3748770 283 55-62 1.72/1.50 Dual Quad FI & 4-brl Corvette
3748772 283 57-62 1.72/1.50 Dual Quad FI & 4-brl Corvette
3755537 283 57-62 1.72/1.50
3755538 283 59 1.72/1.50 250-290HP FI Corvette
3755539 283 58-62 1.72/1.50
3755549 283 57-62 1.72/1.50
3755550 283 57-62 1.72/1.50 Dual Quad FI & 4-brl Corvette
3755585 327 62-67 1.72/1.50
3755896 283 62-64 1.72/1.50
3760116 283 59 1.72/1.50 Dual Quad FI & 4-brl Corvette
376445 350 80-84 1.72/1.50
376450 262/305 75-76 1.72/1.50
376495 350 Jun-79 1.94/1.50 76cc
3767460 265/283/327 55-67 1.72/1.50 Car & Truck Corvette
3767462 327 62-67 1.72/1.50
3767465 283 60-61 1.72/1.50 Dual Quad FI & 4-brl Corvette
3767754 283 60-61 1.72/1.50
3767792 283 60-67 1.72/1.50
3770126 327/350 67-70 1.94/1.50
3773012 265 55 1.72/1.50
3774634 327 64-67 1.72/1.50
3774682 283/327 60-67 1.72/1.50
3774684 283/327 57-67 1.72/1.50
3774690 283 58 1.72/1.50 FI Corvette
3774692 283 58-64 1.72/1.50 Dual Quad FI & 4-brl Corvette
3782461 302/327/350 61-70 1.94/1.50 Dual Quad FI & 4-brl Corvette 2.02/1.60 Doubble humps 64cc
3782462 327 67 1.94/1.50 Corvette 2.02/1.60
3792563 327 65-67
3795896 283/307/327 58-72 1.72/1.50 60cc
3796896 283 64-67 1.72/1.50 60cc Chevy II
3798996 327 63-67
3814462 350 67 1.94/1.50
3814480 283/327 60-67 1.72/1.50
3814482 327 62-67 1.72/1.50
3817680 283 59 1.72/1.50 FI 4-brl
3817681 327 62-67 1.72/1.50
3817682 283 61-62 1.72/1.50
3836839 265 55 1.72/1.50
3836842 283/327 57-67 1.72/1.50
3836924 283 63-64 1.72/1.50
3836942 283 58-62 1.72/1.50
3837063 283 58-62 1.72/1.50
3837064 265/283 56-62 1.72/1.50
3837065 265 55-56 1.72/1.50
3837775 283/327 62-67 1.72/1.50
383882 400 71-73
3848720 283 57-58 1.72/1.50
3849820 327 65 1.72/1.50
3854520 283/327 62-67 1.72/1.50
3867802 283 57-60 1.72/1.50 FI Corvette
3873064 265 56-57 1.72/1.50
3876487 350 71-73 1.94/1.50 76cc
3876775 283/327 57-67 1.72/1.50 76cc
3878775 327 64-67 1.72/1.50
3884520 283/327 60-67 1.72/1.50 60cc
3890462 302/327/350 62-68 1.94/1.50 2.02/1.60 64cc Doubble humps
3891462 302/327/350 62-67 1.94/1.50 2.02/1.60 64cc
3891492 327 64-67 1.94/1.50
3911011 327 68
3911032 307/327 68-70 1.72/1.50 70cc
3912264 283 58-62 1.72/1.50
3912265 283 63-64 1.72/1.50
3912291 302/327/350 68-70 1.94/1.50 2.02/1.60 64ccDoubble humps
3912311 350 67 1.94/1.50
3912313 327 65-73 1.72/1.50
3917264 302 67 2.02/1.60 64cc Z-28
3917290 327 68-70 1.72/1.50
3917291 302/327/350 62-69 1.94/1.50 2.02/1.60 64cc Doubble humps
3917292 327 67-68 1.94/1.50
3917293 307/327 68-69 1.72/1.50 76cc
3921175 327 66 1.94/1.50
3923441 350 67-76 1.94/1.50 76cc
3927185 307/327/350 68-79 1.72/1.50 70cc
3927186 302/327/350 68-72 1.94/1.50 2.02/1.60 64cc Doubble humps Bolt holes
3927187 302/350 69-70 2.02/1.60 64cc Corvette
3927188 307/327/350 69 1.72/1.50 76cc
3928454 307 68 1.72/1.50
3928455 302/327 68 2.02/1.60 64cc 325 & 350HP
3928494 327 68 2.02/1.60 64cc 350HP 4-brl
3928495 327 68 1.72/1.50
3931633 307 68-73 1.72/1.50
3931635 350 68-76 1.94/1.50 76cc
3931637 327 68-69
3931638 327 68 1.72/1.50
3931639 302 68 2.02/1.60 64cc
3932441 327/350 67-79 1.94/1.50 76cc
3932454 307/350 68-799 1.72/1.50 76cc
3933148 350 68-73 76cc
3941174 327 68 1.72/1.50
3946812 350 69 1.72/1.50
3946813 350 69-79 76cc
3947014 350 68-70
3947040 302/327/350 68-70 1.94/1.50 2.02/1.60 64cc
3947041 302/327/350 68-79 1.94/1.50 2.02/1.60 64cc
3951598 400 70-71 1.94/1.50 76cc
3961598 400 70-76 1.94/1.50 76cc
3964286 350 68-77 1.94/1.50 76cc
3970126 327/350 67-79 1.72/1.50
3973195 400 71-73 1.94/1.50 76cc
3973414 327/350 64-70 2.02/1.60 64cc Z-28 LT-1 corvette
3973487 350 68-79 1.94/1.50 2.02/1.60 76cc
3973487X 350 68-73 1.94/1.50 2.02/1.60 76cc X cast 10cc's
3973493 400 70-76 1.94/1.50 76cc
3986316 350 71-72 2.02/1.60 76cc
3986330 350 69-79 1.94/1.50 76cc
3986339 307/350 68-79 1.72/1.50 76cc
3986388 350 68-79 1.72/1.50 76cc
3990941 307/350 68-82
3991492 327/350 68-73 1.94/1.50 2.02/1.60 64cc Angle plug
399380 400 70-73 76cc
3997417 307 71 1.72/1.50
3998916 350/400 72-75 2.02/1.60 76cc
3998920 350 72-75 1.94/1.50 76cc
3998991 307/350 68-79 1.72/1.50 76cc
3998993 307/350 68-79 1.71/1.50 1.94/1.50 76cc
3998997 350/400 71-73 1.94/1.50 76cc
426424 305/350/400 72-82 1.72/1.50
458624 350 69-84 1.94/1.50 76cc
460703 350 78-80 1.94/1.50 76cc
462614 305/350 77-79 1.72/1.50
462624 350 76-87 1.94/1.50 2.02/1.60 76cc Crack prone
464033 350 76-86 1.94/1.50 76cc
464036 350 76-86 1.94/1.50 76cc
468642 350/400 75-84 1.72/1.50
471513 267 79-81 1.72/1.50
472424 305 76-79 1.72/1.50
474213 305 78-82 1.72/1.50
474214 350 78-82 1.94/1.50 76cc
475590 400 78-82 1.94/1.50 76cc
517513 267 79-81 1.72/1.50
6259515 350 73
6260855 350 73-75 1.94/1.50 76cc
6260856 350 73-76 1.94/1.50 76cc
6272070 350 73
10045427 Pontiac/Chevy Aluminum, 91cc chamber Large Rectangle Port
10049875 Pontiac/Chevy Aluminum Small Rectangle port
10051128 454 90-94 2.19/1.88 72cc Bowtie Aluminum Rectangular port 400cc intake
10052902 427 Oval Port Open chamber
10101136 454 91-94 2.06/1.77 Open chamber Oval port
10101140 366/427 91-01 Oval Port Closed chamber
10114156 454 91-01 Oval Port Open chamber
10121033 454 78-88 2.06/1.77 Open chamber Oval port
10141279 454 96-01 Vortec 7400 100cc chambers Oval Port
10487052 366 77-90 Oval Port Open chamber
12352783 454 79-93 2.06/1.77 Open chamber Oval port
12363391 Oval Port Bowtie Aluminum Signature Series
12363401 Rectangle Port Bowtie Aluminum Signature Series
12558162 496 01 & UP Gen.VII Vortec 8100 8.1L truck
12560241 454 98-01 Vortec 7400 100cc chambers Oval Port
12562932 454/502 91-95 Oval Port truck crate motor 118cc chambers
12562934 502 00 & UP GenVI Marine
14011077 454 89-94 2.19/1.88 118cc Replacement Aluminum Rectangular port 295cc intake
14025175 454 83-93 2.06/1.77 Open chamber Oval port
14044861 454 89-94 2.19/1.88 106cc Bowtie Aluminum Rectangular port 380cc intake
14081044 454 86-90 2.06/1.77 Open chamber Oval port
14081045 454 78-87 Oval Port Open chamber
14081052 366/427/454 85-87 Oval Port Open chamber
14092359 427 86-89 2.06/1.77 Open chamber Oval port
14092360 454 85-89 2.06/1.77 Open chamber Oval port
14096188 454 87-94 2.19/1.88 118cc Replacement Rectangular port 325cc intake
14097088 502 89-date 2.19/1.88 118cc Replacement Rectangular port 325cc intake GEN V
14101398 454 86-90 2.06/1.77 Open chamber Oval port
24502585 Olds/Chevy DRCE 2 Pro Stock aluminum
330864 366/427/454 70-81 2.06/1.77 Open chamber Oval port
330865 366/427/454 70-84 2.06/1.77 Open chamber Oval port
330866 366/427 68-78 Oval Port Open chamber
330867 427 68-73 Oval Port Open chamber
336768 427 73-76 Oval Port Open chamber
336781 454 73-85 2.06/1.77 113cc Oval port
343771 366/427/454 68-85 2.06/1.77 Open chamber Oval port
343772 366/427/454 76-84 2.06/1.77 Open chamber Oval port
343783 454 75-78 2.06/1.77 Open chamber Oval port
346236 454 75-87 2.06/1.77 113cc Oval port
346238 454 75-87 2.06/1.77 113cc Oval port
352625 454 70-76 Oval Port Open chamber
353049 454 70-73 2.06/1.77 113cc Oval port
366765 427/454 73-84 2.06/1.77 Open chamber Oval port
3732791 348 58
3758379 348 59-61
3759256 348 58
3767738 348 59-61
3781147 348 60-61 High Perf
3795586 409 61 360HP
3814690 409 62-64 High Perf
3819333 348/409 62-65
3830817 409 63-65 340HP
3837731 409 63 High Perf Z-11
3852583 409 65 400HP
3856206 396 65-66 2.06/1.77 98cc Oval port
3856208 396 65 2.06/1.77 109cc Z-16/L-37 Rectangular port
3856213 366 66-70 2.06/1.77 Closed chamber Oval port
3856260 396 68 Oval Port Closed chamber
3872702 396/427 66 2.06/1.77 98cc Oval port L-34/L-35/L-36
3873858 396/427 66-67 2.06/1.77 109cc L-78/L-72 Rectangular port
3876875 427 66-70 2.06/1.77 Closed chamber Oval port
3904390 396/427 66-67 2.06/1.77 98cc Oval port L-34/L-35/L-36
3904391 396/427 65-67 2.06/1.77 107cc L-78/L-71/L-72 Rectangular port
3904392 427 67 2.19/1.88 106cc L-88/L-89 Aluminum Rectangular port
3904393 366 66-68 2.06/1.77 Closed chamber Oval port
3908952 427 67 Oval Port Open chamber
3909802 396/427 66-67 2.06/1.77 100cc Oval port L-34/L-35/L-36/L-68
3917215 396/427 67-69 2.06/1.77 100cc Oval port L-34/L-35
3917219 366/427 66-70 2.06/1.77 Closed chamber Oval port
3919840 396/427 67-69 2.06/1.77 107cc L-78/L-71/L-72 Rectangular port
3919842 396/427 68-69 2.19/1.88 106cc L-88/L-89 Aluminum Rectangular port
3931063 396/427 69-70 2.06/1.77 100cc Oval port L-34/L-35
3933148 366/396/427 69 2.06/1.77 122cc Oval port
3933149 427 69-70 2.06/1.77 122cc Oval port
3935401 427 68-76 Oval Port Open chamber
3946074 396/454 69-71 2.19/1.88 118cc L-88/ZL-1 Aluminum Rectangular port
3964280 427/454 66-70 2.06/1.77 Closed chamber Oval port
3964290 396/402/427/454 69-70 2.06/1.77 100cc Oval port
3964291 396/402/427/454 69-70 2.19/1.88 108cc L-78/L-71/L-72/LS-6 Rectangular port 325cc intake
3964292 454 70 2.19/1.88 109cc LS-6 Rectangular port
3965198 396 69 2.06/1.77 Open chamber Oval port
3975950 366/427 68-70 2.06/1.77 Closed chamber Oval port
3986133 366/427 70-85 2.06/1.77 Closed chamber Oval port
3986136 366/427 70-84 2.06/1.77 Closed chamber Oval port
3993820 402/454 71 2.06/1.77 113cc Oval port
3994025 454 71 2.19/1.88 118cc LS-6 Rectangular port
3994026 454 71 2.19/1.88 118cc LS-6 Rectangular port
3999241 402/454 72 2.06/1.77 113cc Oval port
473328 366 68-85 2.06/1.77 Open chamber Oval port
6258723 454 71 2.19/1.88 118cc LS-6 Rectangular port
6272292 402/454 71 2.06/1.77 Open chamber Oval port
6272990 454 71-94 2.19/1.88 118cc Replacement Rectangular port 325cc intake

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