Small Block Chevrolet Engines Covered
- (By cubic inch displacement)
262 - 265 - 267 - 283 - 302 - 305 - 307 - 327 - 350 - 400
(Engine Block and Cylinder Head)
Chev Small Block V8 Engine Block Casting Numbers
CASTING#.....SIZE...YEAR...MAIN CAP BOLTS....NOTES
140029.....350...80-84...2
330817.....400...72-80...2
355909.....262.....75....2
355909.....305...76-79...2
360851.....262...75-76...2...Monza V-8
361979.....305...77-79...2 or 4, some Canadian assembled heavy duty blocks
have 4-bolt main caps
366245.....350...78-79...4...Bowtie
366286...................4...Bowtie, siamesed, straight nodular iron main
caps, 2-piece seal, 4.00-4.150" bores, 2.45" main journals
366298...................4...Bowtie, Aluminum, billet main caps, 3.398"
bore with sleeves, two piece rear main seal.
366299...................4...Bowtie, Aluminum, nodular iron splayed caps,
wet sump, 4.00" bore
389257.....302.....67....2
393288.....283...65-67...2
460703.....350.....78....4
460776.....305...78-79...2
460777.....305...78-79...2
460778.....305...78-79...2 or 4, some Canadian assembled heavy duty truck
blocks have 4-bolt main caps
471511.....267...79-82...2
3556519....283...58-61...2
3703524....265.....55....2...No oil filter
3720991....265...56-57...2
3731548....265...57......2...No side motor mounts
3731548....283...57......2...No side motor mounts
3737739....283...58-64...2
3756519....283...58-62...2
3782870....327...62-67...2
3789817....283...62-64...2
3789817....327...62-67...2
3789935....283...61-64...2
3790721....283...62-64...2...Chevy II recessed oil filter boss
3790721....327...65-66...2...Chevy II recessed oil filter boss
3791362....327...62-67...2...Chevy II recessed oil filter boss
3792563....327.....65....2
3792582....283...64-65...2
3794226....283...58-63...2
3794460....327...62-64...2
3830944....327.....63....2
3834810....283...64-66...2
3834812....283...62-63...2
3837739....283...58-62...2
3849852....283...57-66...2
3849935....283...65-67...2
3858174....327...64-67...2
3858180....327...64-67...2
3858618....350...68-76...2
3862194....283...65-67...2...Chevy II recessed oil filter boss
3862812....283...62-64...2
3892657....302.....67....2...Z-28 Camaro
3892657....327.....67....2
3892657....350.....67....2...Camaro
3896944....283...66-67...2
3896948....283...66-67...2
3903352....327.....67....2
3914636....307.....68....2
3914638....327.....68....2...Truck
3914653....307...68-73...2
3914660....327.....68....2
3914678....302.....68....2...Z-28 Camaro
3914678....327.....68....2
3914678....350.....68....2
3931174....307.....68....2...Truck
3932371....307...69-73...2
3932373....307...68-73...2
3932386....302.....69....4...Z-28 Camaro
3932386....327.....69....2
3932386....350.....69....4
3932388....327.....69....2
3932388....350.....69....2 or 4
3933180....327...68-69...2
3951509....400...70-71...4
3951509....400...74-80...2
3951511....400...70-73...4...Some replacement blocks had 2-bolt main caps
3956618....302.....69....4...Z-28 Camaro
3956618....327...68-69...2
3956618....350.....69....2 or 4
3956632....307.....69....2
3959512....327...62-67...2...Was also used for some "CE" replacement
blocks
3959532....283...64......2...Used for some "CE" replacement
blocks
3970010....302.....69....4...Z-28 Camaro
3970010....327.....69....2...Trucks and industrial
3970010....350...69-80...2 or 4
3970014....350...70-76...2 or 4
3970020....307...70-73...2
3970024....307...69-73...2
4715111....305.....80....2
6259425....350...69-76...2
10036033...350...........4...Goodwrench crate motor, 2-piece rear seal,
"Hecho en Mexico"
10046164...305.....86....2
10051182.................2 or 4...Bowtie, 3.75"-4.30" bores,
1 or 2-piece rear seal
10051184.................4...Bowtie, 4.00"-4.155" bores, 1 or
2-piece rear seal
10054727...350...86-up...2 or 4...one piece rear seal, some "Made
in Canada"
10066036...350...........2 or 4...Target Master/Goodwrench crate motor,
2-piece rear seal, "Hecho en Mexico"
10066038...350.....92....4...Goodwrench crate motor, 2-piece rear seal,
"Hecho en Mexico"
10090511...350.....90....2...LT-5, ZR1 Vette, 375hp
10125327...350...92-up...2 or 4...Gen.II LT-1, reverse flow cooling
10125327...350...96-up...2 or 4...Gen.II LT-4, reverse flow cooling
10134996.................4...Bowtie, Aluminum, 4.125" bore 2.65"
main journals
10153558...350...91-92...4...LT-5, ZR1 Vette, 375hp
10168588...265...94-96...2...L99, Gen.II, 4.3 Liter V-8, Caprice, reverse
flow cooling
10199001...350...93-95...4...LT-5, ZR1 Vette, 405hp
10243878...305...96-98...2...Vortec truck, roller cam, one-piece rear
seal
10243880...350...95-00...2 or 4...Vortec truck, Gen.I crate motors and
"ZZ4", roller cam, one piece rear seal
12550592...350...97-up...crossbolted block, Gen.III, "LS1",
aluminum
12551354...364...02-up...crossbolted cast iron Gen. III, 6.0L, truck
12559378...350...99-up...crossbolted block, Gen.III, "LS1",
aluminum
12559846...350...98-up...crossbolted block, Gen.III, "LS1",
aluminum
12560621...350...98-up...crossbolted block, Gen.III, "LS1",
aluminum
12560626...350...99-up...crossbolted block, Gen.III, "LS1",
aluminum
12560629...350...99......crossbolted block, Gen.III, "LS1",
aluminum
12561168...350...01-up...crossbolted block, Gen.III, "LS1",
aluminum
12561358...293...99-up...Gen.III, Used with 4.8L motors
12561358...325...99-up...Gen.III, used with 5.3L motors
12562174...350...98-up...crossbolted block, Gen.III, "LS1",
aluminum
12577396.........02-up...Gen.III, 4.8L or 5.3L, cast iron, truck
14010201...305...80-85...2
14010202...305...80-85...2
14010203...305...80-85...2
14010207...350...80-85...2 or 4
14010209...350...80-85...2 or 4
14010280...267...79-82...2
14011064...350...83......4
14011148...350...87-89.......Roller cam, one-piece rear seal
14016376...267...79-82...2
14016379...350...77-79...2 or 4
14016381...305...80-84...2
14016382...305...79-84...2
14016383...305...80-85...2...Truck
14079287...350...86-90.......Truck
14088526...350...87-89.......Roller cam, one-piece rear seal
14088548...350...86-88...2 or 4
14088551...305...86-87...2...one-piece rear main seal
14093627...305...87-91...2...Roller cam, one-piece rear seal
14093638...350...87-95...2 or 4...Roller or flat tappet cam one-piece
rear seal
14094766...305...86-up...2...One-piece rear seal
14101147...305...85-up...2
14101148...350...87-90...4...One-piece rear seal
14102058...305...87-91...2...Roller cam, one-piece rear seal
22551656.................4...Rocket block, 4.00"-4.190" bores,
2.45" main journal sizes, splayed caps, dry sump, 2-piece rear seal,
9.025" deck.
Chev Small Block V8 Cylinder Head Casting Numbers
CASTING#.....YEAR...ENGINE SIZE...NOTES
330545.....73......350..........76cc chamber, 2.02/1.60
333881.....74-75...350..........76cc chamber, 2.02/1.60
333882.....74-80...350/400......76cc chambers
340292.....70's.......Over the counter, angle plug, 64cc chamber
354434.....75-79...262/267/305...60cc chambers
358741.....76-79...305
376445.....77-85...350..........76cc chamber, small valves
376450.....75-81...262/267/305..6 or 7 exhaust bolt holes, 60cc chamber
462614.....77-79...305..........60cc chamber
462624.....75-86...350/400......76cc chamber, 1.72/1.5, 1.94/1.5 or 2.02/1.6
valves
458642.....75-84...350..........350
468642.....76-up...350/400
471513.....79......267/350
517513.....79......267/350
1816887....63......283..........Made in "Canada", GMC HD truck
3636839....55......265
3703523....55......265
3713358....55-56...265
3713569....55-56...265
3725306....56......265
3731539....57......283..........283 HP FI
3731544....57-61...283
3731554....57-62...283
3731556....57......283..........Truck, Made in Canada
3731762....56......265..........Vette, 2x4 carbs
3737775....62-67...283/327
3740997....57......283..........1x4, 2x4 & FI (exc.-283hp)
3743056....58......283
3743096....62-67...327..........GMC Truck
3747363....57-61...283
3747460....59-67...283/327......70cc chambers
3748770....58......283
3748772....58-61...283
3755537....57-62...283
3755539....58-62...283
3755549....57-62...283
3755550....59......283
3755585....62-67...327..........GMC Truck
3767460....59-60...283
3767462....62-67...327
3767465....59-61...283
3767754....59-61...283..........60cc chambers
3767792....60-64...283
3774682....60-64...283/327......70cc chambers
3774684....62-64...327..........75cc chambers
3774692....58-64...283..........60cc chambers
3782461....64-66...327......Camel hump,no accessory holes,160/62cc port
volumes,62cc chamber
3782461X...60-63...283/327..Camel hump,no accessory holes,larger 172/64cc
port volumes, 62cc chamber
3795896....63-65...283......60cc chamber
3795896....62-64...327......60cc chamber
3798996....63-67...327
3814480....60-67...283/327..70cc chambers, 1.72/1.5 valves
3814482....62-67...283/327/350..75cc chambers
3817680....63-67...283/327
3817681....62-67...327
3817682....61-62...283
3836839....55......265
3836842....57-67...283/327
3837064....56-62...265/283
3837065....55-56...265..........Truck
3848720....57-58...283
3876775....60-67...283/327......75cc chamber
3884520....60-67...283..........Some marked "Made in Canada",
60cc chamber, also used by Studebaker
3884520....62-67...327..........Some marked "Made in Canada",
60cc chamber, also used by Studebaker
3890462....66-67...302/327/350..Camel hump,no accessory holes,64cc chamber
3901068....87-up...350..........Crate motor, 285hp, 64cc chamber
3911032....68......307/327......70cc chamber
3912264....58-62...283
3912265....63-64...283
3912311....65-67...327
3912313....65-67...327
3917290....67-68...307/327
3917291....67-68...302/327/350..Camel hump,no accessory holes,64cc chamber
3917292....68......327/350......Camel hump,64cc chamber
3917293....68......307/327......75cc chambers
3927185....69-76...307/327/350..70cc chambers
3927186....69-70...302/350......Camel hump,64cc chambers,accessory holes
3927187....69-70...350..........Camel hump,64cc chambers,accessory holes
3927188....69......327..........74cc chambers
3927188....70......307..........74cc chambers
3931633....68-73...307
3931635....68-76...350
3931638....68......327..........Truck
3932441....69-70...350..........76cc chambers
3932441X...69-70...350/400......80cc chambers
3932454....69-73...307
3932454....69-79...350..........Truck
3946812....69......350
3946813....69-79...350..........Truck
3947040....68......327.........."Right angle" casting identifier,
64cc chambers, good HP head, used in trucks, no accessory holes
3947041....69-70...302/350......"Right angle" casting identifier,
64cc chamber, accessory holes, good HP head
3947041X...69-70...302/350......"Right angle" casting identifier,
64cc chamber, 165cc intake port, accessory holes, good HP head
3951598....70......400..........76cc chambers
3964286............350
3965742....70......350..........over the counter, angle plug
3970126....67-71...327/350
3973370....69-70...350..........over the counter in US, Canadian 350/300hp
production use in Pontiac, 64cc, straight or angle plug
3973414....70......350..........LT1-370hp, Camel hump, 64cc chamber
3973487....71-72...350..........used on 71-72 350 LT1, 75cc chamber
3973487X...71-72...350..........75cc chamber
3973493....71-72...400..........76cc chamber
3986316....71......350..........76cc chamber
3986336....71......350..........76cc chamber
3986336X...71......350..........76cc chamber
3986339....71......307/350......74cc chamber
3986339X...71......307/350......74cc chamber
3986388....68-76...307/350
3991492....70......350..........LT1,Camel hump,accessory holes,64cc, straight
plug
3991492....70-up................over the counter,Camel hump,64cc, straight
or angle plug
3998916....72......350..........also used w/'72 350 LT1,big valves, screw
in studs,76cc chambers
3998920....72-73...350
3998991....72-73...307/350......75cc chambers
3998993....72-73...307/350......75cc chambers
3998993....current..350.........Goodwrench crate motors,"Hecho en
Mexico",75cc chambers
3998997....72-73...350/400......76cc chambers
3998997....78-84...305/350......76cc chambers
4079261....75......350
10033867........................Aluminum,over the counter Pontiac 23'
head,62cc,angle plug, 196cc intake port
10045434........................Over the counter Pontiac 15' head 55cc,
angle plug, raised runner aluminum, "roll over" head
10051101........................Bowtie, aluminum, 55cc, angle plug raised
runner, 196cc intake port
10065202...87-95...350..........Truck
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..........Aluminum, 58cc, angle plug, raised "D"
port exhaust, 1.94"/1.5" valves
10093328........................Over the counter, Pontiac 15' head aluminum,224cc
ports, 61cc chambers, "roll over" head
10106178...90......350..........LT5, ZR1, DOHC, 32-valve, pass. side,
aluminum
10106179...90......350..........LT5, ZR1, DOHC, 32-valve, drvs. side,
aluminum
10110810...91-up...350..........Gen. 1, 65cc chambers
10120928...87-95...350
10125320...94-96...350..........Gen.II LT1, cast iron version, used on
"9C1" Police package, Impala SS,
Cadillac Fleetwood, Buick Roadmaster reverse flow cooling
10128374...92-up...350..........Gen.II LT1, 53cc, angle plug, aluminum,
reverse flow cooling, 175/68cc ports
10134352........................Bowtie, 45cc, angle plug, "low"
port, 223cc intake port, aluminum, 18' race head
10134363........................NOTE: 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.
10147898...95-98...350..........Gen.I crate motor
10159550...87-95...350
10159551...87-95...305
10159552...87-95...350
10159553...87-95...305
10174389...91-94...350..........LT5, ZR1, DOHC, 32-valve, drvs. side,
aluminum
10174390...91-95...350..........LT5, ZR1, DOHC, 32-valve, pass. side,
aluminum
10185040........................Bowtie, aluminum, 45cc chambers, 1st version,
symmetrical ports, 263cc intake ports, splayed valves
10185040........................Bowtie, aluminum, 45cc chambers, 2nd version,
symmetrical ports, 240cc intake ports, splayed valves
10205245...93......350..........Gen.II LT1, aluminum, reverse flow cooling,
175/68cc port volumes
10207643...94-96...350..........Gen.II LT1, aluminum, reverse flow cooling,
175/68cc port volumes
10208890...94-96...265..........Gen.II, L99, 4.3 Liter V-8, cast iron,
reverse flow
10215339...97......350..........Gen.III, LS1, aluminum, 68cc
10225121...94-95...350..........LT5, ZR1, DOHC, 32-valve, drvs. side,
aluminum
10225122...95......350..........LT5, ZR1, DOHC, 32-valve, pass. side,
aluminum
10239902...96-up...350..........Gen.II LT4, aluminum, reverse flow cooling,
195cc port, 54.4cc chamber, angle plug
10239906...96-up...350.........."Vortec 5700", "L31",
64cc chamber, 170cc intake port, 1.94"/1.5" valves
12367712...99-up................"Fast Burn", aluminum, 210cc
intake, port, 2.00/1.55 valves, 62cc chamber
12367713...99-up................"Fast Burn" used on ZZ430 crate
motor, aluminum, 210cc intake port, 2.00/1.55 valves, 62cc chamber
12480005...2000.................LS1 "GTZ", aluminum, 38cc, 2.125"/1.625"
valves, angle plug
12480011...97-up................Bowtie "SB2.2", aluminum, 2nd
version of "SB2", 48cc chambers, "mirror ports", revised
valve angles & plug location
12506450...87-95...350
12509859...87-94...305
12516852...87-95...350
12551561...96......350..........Gen.II, "LT1", aluminum
12552520...97-up...305..........Vortec, truck
12554290...94-96...350..........Gen.II, "LT1", cast iron version,
used on "9C1" Police package, Impala SS,
Cadillac Fleetwood, Buick Roadmaster reverse flow cooling
12555690...96......350..........Gen.II, "LT4", aluminum
12556743...99......325..........Gen.III, 5.3L, aluminum, truck, van
12558059...97......305..........Vortec, truck, 1.84"/1.5" valves
12558062...98......350..........L31 Vortec, truck, 64cc chambers, 1.94/1.5,
170cc intake port
12558806...97-98...350..........Gen.III, "LS1", aluminum, 68cc
12559853...99-up...350..........Gen.III, "LS1", aluminum, 68cc
12559895...00-up...325..........Gen.III, Vortec 5.3L
12564241...00-up...350..........Gen.III, "LS1", aluminum, 68cc
12564243...01-up...350..........Gen.III, "LS6", aluminum
14008856...79-81...267
14094093...86-88...350
14010201...82-85...305
14011034........................Bowtie, cast iron, 64cc chambers, 184cc
port volume, angle plug, "Phase II" head
14011049........................Bowtie, aluminum, 55cc chambers, angle
plug, 180cc ports, "Phase 6"
14011083...55-86...350..........Crate motor for years indicated. 285/300hp,
64cc chambers, 1.94"/1.5" valves
14014415...80-85...267/305
14014416...80-86...305..........1.84"/1.5" valves, 58cc chambers
14014440...80......305..........1.84"/1.5" valves
14019821...80-86...350
14019924...79-81...267
14019926...80-86...350
14010516...80-86...350
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"/1.5" or 1.84"/1.5"
valves, 53cc chambers
14022801...80-86...305
14024816...........350..........76cc chambers, 1.94/1.5 valves, Gen.I
crate motors
14034806...78-82...267
14034807...78-86...305
14034808...80-86...350
14034808...96-up...350..........76cc chambers, 1.94"/1.5" valves,
Gen.I Goodwrench crate motors
14034810...80-86...350..........Truck
14034811...80-86...350..........Truck
14039121...81-86...305..........Truck
14039122...81-86...305..........Truck
14071114...80-86...350
14075381...80-86...350..........Truck
14079261...86......350
14085844...80-86...350..........Truck
14085963...86......350
14088526...........350..........Gen.II, LT1, aluminum
14089119...86-88...350
14094093...86-88...350
14096217...55-86...350..........Crate motor, 285hp/300hp, 64cc chambers,
72' or 90' center intake manifold bolt angles
14101081...87-95...305
14101083...87-up...350..........Gen.I, also used on crate motors, 285
or 300 hp, 64cc chambers, 72' center manifold bolt angles
14101128...86-87...350..........Aluminum, 58cc, angle plug
14102187...87-91...305..........1.84"/1.5" valves
14102191...87-up...350
14102193...87-up...305/350......1.94"/1.5" valves
24502559...96-97................Bowtie, "SB2", 1st version,
"mirror ports", aluminum, 196cc port, CNC version 280cc port,
38cc chamber
25500141........................Buick/Chevy aluminum 10' head, 42cc chambers,
symmetrical ports, 235cc intake port volumes, 2.1"/1.625" valves
25534351C..04-up................Gen.I Bowtie, cast iron Vortec head, 175/65cc
ports, 2.00/1.55 valves, "small port head"
25534371C..04-up................Gen.I Bowtie, cast iron Vortec head, 206/77cc
ports, 2.00/1.55 valves, "large port head"
33417369...90-up...350..........Gen.I Goodwrench crate motor,"Hecho
en Mexico", 76cc
| Casting #
|
CID |
Years |
Additional Comments
|
| 6399 |
307 |
62-63 |
|
| 330545 |
350 |
73 |
76cc - 2.02"/1.6" valves - Corvette & Camaro |
| 330862 |
400 |
70-73 |
1.94"/1.5" valves |
| 333881 |
350 |
74-75 |
76cc - 2.02"/1.6" valves - Corvette & Camaro |
| 333882 |
350 |
74-80 |
76cc |
| 333882 |
400 |
74-80 |
76cc |
| 340292 |
|
70's |
Service replacement head, 64cc |
| 354434 |
262/267/305 |
75-79 |
|
| 358741 |
305 |
76-79 |
|
| 376445 |
305,350 |
80-84 |
|
| 376450 |
262,305,350 |
74-81 |
7 bolt exhaust bolt holes - 168/60 cc port volumes
|
| 376455 |
350 |
77-85 |
|
| 376495 |
350 |
70-79 |
|
| 378450 |
305 |
78-85 |
|
| 458642 |
350,400 |
67-70 |
|
| 462624 |
350,400 |
75-86 |
7 bolt exhaust bolt holes |
| 468642 |
350,400 |
76-up |
|
| 471513 |
267,350 |
79 |
|
| 517513 |
267,350 |
79 |
|
| 3636839 |
265 |
55 |
|
| 3703523 |
265 |
55 |
Corvette |
| 3713358 |
265 |
55-56 |
|
| 3713569 |
265 |
55-56 |
|
| 3725306 |
265 |
55-57 |
|
| 3731539 |
283 |
57 |
Corvette w/Rochester mechanical FI |
| 3731544 |
283 |
57-61 |
|
| 3731554 |
283 |
57-62 |
|
| 3731556 |
283 |
57 |
|
| 3731762 |
265 |
56 |
Corvette 2X4 |
| 3737775 |
283,327 |
62-67 |
|
| 3740997 |
283 |
57 |
|
| 3743056 |
283 |
58 |
|
| 3743096 |
327 |
62-67 |
GMC truck |
| 3747363 |
283,327 |
57-61 |
|
| 3747460 |
283/327 |
59-67 |
|
| 3748770 |
283 |
58 |
Corvette 1X4, 2X4, & FI |
| 3748772 |
283 |
58-61 |
|
| 3755537 |
283 |
57-62 |
|
| 3755539 |
283 |
58-62 |
|
| 3755549 |
283 |
57-62 |
|
| 3755550 |
283 |
59 |
Corvette |
| 3755585 |
327 |
62-67 |
GMC truck |
| 3767450 |
305 |
76-79 |
7 bolt exhaust |
| 3767460 |
283 |
64-67 |
HD truck only |
| 3767462 |
327 |
62-67 |
|
| 3767465 |
283 |
59-61 |
|
| 3767754 |
283 |
59-61 |
283 Power Pack |
| 3767792 |
283 |
60-64 |
|
| 3770126 |
327 |
69 |
|
| 3774682 |
283,327 |
60-64 |
|
| 3774684 |
327 |
62-64 |
|
| 3774692 |
283 |
58-64 |
60-61 Corvette, 283 Power Pack |
| 3782461 |
327 |
64-66 |
"Camel Hump" head, 161/62cc port volumes
|
| 3782461X |
|
60-63 |
"Camel Hump" head, 172/64cc port volumes |
| 3795896 |
283,327 |
63-65 |
62-64 327/350hp Corvette, 283 Power Pack |
| 3798996 |
327 |
63-67 |
|
| 3814480 |
283,327 |
60-67 |
|
| 3814482 |
327,350 |
62-67 |
low compression head, 75cc |
| 3817680 |
283,327 |
63-67 |
|
| 3817681 |
327,350 |
62-67 |
|
| 3817682 |
283 |
61-62 |
|
| 3836839 |
265 |
55 |
|
| 3836842 |
283,327 |
57-67 |
|
| 3837064 |
265,283 |
56-62 |
|
| 3837065 |
265 |
55-56 |
GMC truck |
| 3847820 |
283 |
57-58 |
|
| 3876775 |
283,327 |
60-67 |
Camaro, 327/210hp |
| 3884520 |
283,327 |
66-67 |
60cc, GM & Studebaker, some Canadian built |
| 3890462 |
302,327,350 |
66-67 |
"Camel Hump" head - 161/65cc port volumes
|
| 3901068 |
350 |
87-up |
Goodwrench crate engine, 350/285hp, 64cc, 72° bolt angle |
| 3911032 |
307,327 |
68 |
|
| 3912264 |
283 |
58-62 |
|
| 3912265 |
283 |
63-64 |
|
| 3912311 |
327 |
67 |
|
| 3912313 |
327 |
65-67 |
|
| 3917290 |
307,327 |
67-68 |
|
| 3917291 |
302,327,350 |
67-68 |
"Camel Hump" head, 161/65cc port volumes
|
| 3917292 |
327 |
68 |
"Camel Hump" head, Corvette 327/350hp |
| 3917293 |
307,327 |
68 |
75cc |
| 3927185 |
307,327 |
69-70 |
69cc |
| 3927186 |
302-350 |
69-70 |
"Camel Hump" head, 63cc |
| 3927187 |
350 |
69-70 |
"Camel Hump" head |
| 3927188 |
307 |
69-70 |
74cc |
| 3928455 |
302,327 |
68 |
|
| 3928494 |
327,350 |
68 |
|
| 3928495 |
327 |
68 |
|
| 3931633 |
307 |
68-73 |
|
| 3931635 |
350 |
68-76 |
|
| 3931637 |
327 |
68-69 |
|
| 3931638 |
327 |
68 |
GMC truck |
| 3932441 |
350 |
69-70 |
76cc, 161/65cc port volumes |
| 3932441X |
350,400 |
69-70 |
350- 80cc, 1.94"/1.5" valves; 400- 1.94"/1.6"
valves; 165/65cc port volumes |
| 3932454 |
307 |
69 |
|
| 3946812 |
350 |
69 |
|
| 3946813 |
350 |
69-70 |
|
| 3947040 |
327 |
68 |
64cc, GMC truck, no accessory holes, "right angle" casting
|
| 3947041 |
302,350 |
69-70 |
64cc, w/accessory holes, "right angle"
casting |
| 3951598 |
400 |
70 |
76cc |
| 3964286 |
350 |
|
|
| 3965742 |
350 |
70 |
Service head |
| 3970126 |
327,350 |
67-70 |
|
| 3973370 |
350 |
69-70 |
Service head, straight or angle plug, 1.940" x 1.500"
Valves, 67CC |
| 3973414 |
350 |
70 |
"Camel Hump" head, LT1, 64cc |
| 3973487 |
350 |
71-76 |
71-72 LT1, 75cc, 161/65cc port volumes |
| 3973487X |
350 |
71-72 |
75cc, larger intake ports |
| 3973493 |
400 |
71 |
76cc |
| 3986316 |
350 |
71 |
Corvette, 76cc |
| 3986336X |
350 |
|
76cc |
| 3986388 |
307,350 |
68-76 |
|
| 3986339 |
307,350 |
71 |
74.5cc |
| 3986339X |
307,350 |
71 |
74.5cc |
| 3991492 |
350 |
70 |
"Camel Hump" head, LT1, 64cc, straight plug |
| 3991492 |
|
71-up |
Replacement head, 64cc, straight or angle plug
|
| 3998916 |
350 |
72 |
LT1, 76cc, screw in studs, large valves |
| 3998920 |
350 |
72-73 |
|
| 3998991 |
307,350 |
72-73 |
74.5cc, hardened seats in 73 |
| 33998993 |
307,350 |
72-73 |
74.5cc, hardened seats in 73, 159/64cc port volumes
|
| 3998993 |
350 |
|
Goodwrench crate engine, Mexican made |
| 3998997 |
350,400 |
72-73 |
76cc, hardened seats in 73 |
| 3998997 |
305,350 |
78-84 |
161/65cc port volumes |
| 4079261 |
350 |
75 |
|
| 10033687 |
|
|
Pontiac aluminum race head, 62cc, angle plug, 196cc ports, 2.10"/1.625"
valves, 23° bolt angle |
| 10045434 |
|
|
Aluminum head, 55cc, angle plug, raised runner
design |
| 10051101 |
|
|
Bowtie aluminum head, 55cc, raised runner design, angle plug, 196cc
port volume |
| 10088113 |
350 |
88-up |
Corvette, raised runner D port exhaust, 58cc,
angle plug, 1.94"/1.5" valves |
| 10093328 |
|
|
Pontiac aluminum head, 15°, 224/61cc volumes |
| 10106178 |
350 |
90 |
Corvette ZR1 LT5, DOHC 32V passenger
side |
| 10106179 |
350 |
90 |
Corvette ZR1 LT5, DOHC 32V driver side |
| 10110810 |
350 |
93-up |
|
| 10125320 |
350 |
94-96 |
Gen II 350, LT1, cast iron, reverse flow cooling, Impala SS, &
9C1Police Pkg. |
| 10128374 |
350 |
92-up |
Gen II 350, LT1, aluminum, 53cc, angle plug, reverse
flow cooling, 175/68cc port volume |
| 10134352 |
|
|
Bowtie low port aluminum head, 45cc, angle plug, 223cc port volume,
18° |
| 10134363 |
|
|
Bowtie high port aluminum head, 45cc, angle plug,
210cc port volume, 18° |
| 10134363 |
|
|
Bowtie high port aluminum head, 50cc, angle plug, 250cc port volume,
18°, CNC machined, 2.15"/1.625" valves |
| 10134363 |
|
|
Bowtie high port aluminum head, 60cc, angle plug,
215cc port volume, 18° |
| 10134363 |
|
|
Bowtie high port aluminum head, 65cc, angle plug, 18° |
| 10134363 |
|
|
Bowtie high port aluminum head, 35-37cc, 223cc
port volume |
| 10147898 |
350 |
95-96 |
Goodwrench crate engine |
| 10174389 |
350 |
91-94 |
Corvette ZR1 LT5, DOHC 32V driver side |
| 10174390 |
350 |
91-95 |
Corvette ZR1 LT5, DOHC 32V passenger side |
| 10185040 |
|
|
Aluminum head, 1st version, 45cc, angle plug,
splayed valve, 263cc port volume |
| 10185040 |
|
|
Aluminum head, 2nd version, 45cc, angle plug, splayed valve, 240cc
port volume |
| 10205245 |
350 |
93 |
Gen II 350, LT1, aluminum head, reverse flow cooling,
175/68cc port volume |
| 10207643 |
350 |
94-96 |
Gen II 350, LT1, aluminum head, reverse flow cooling |
| 10225121 |
350 |
94-95 |
Corvette ZR1 LT5, DOHC 32V driver side |
| 10225122 |
350 |
94-95 |
Corvette ZR1 LT5, DOHC 32V passenger side |
| 10239902 |
350 |
96-up |
Gen II 350, aluminum head, reverse flow cooling
|
| 10239906 |
350 |
96-up |
Vortec 5700, L31, 64cc, 1.94"/1.5" valves, 170cc port
volume |
| 102480011 |
SB2 |
97-up |
SB2 2nd version, mirror port, revised plug location
& valve angles |
| 12552520 |
305 |
96 |
Vortec 5000 truck |
| 12554290 |
350 |
94-96 |
Gen II 350, LT1, cast iron, reverse flow cooling,
Impala SS & 9C1 Police Pkg. |
| 12558062 |
350 |
98 |
Vortec 5700 |
| 14096217 |
350 |
55-86 |
350/300hp crate engine, 64cc, 90° intake bolt
angle |
| 14010201 |
305 |
84 |
|
| 14011034 |
|
|
Bowtie Phase 2 iron head, 64cc, angle plugs, 184cc
port volume, 2.02"/1.6" valves |
| 14011049 |
|
|
Bowtie Phase 6 aluminum head, 55cc, angle plug, 180cc ports, 2.02"/1.6"
or 2.10"/1.65" valves |
| 14011083 |
350 |
55-86 |
350/300hp crate engine, 64cc, 90° intake bolt
angle |
| 14014415 |
267,305 |
80-85 |
|
| 14014416 |
305 |
80-85 |
305HO, 58cc, 1.84"/1.5" valves, 7 bolt
exhaust |
| 14014440 |
305 |
80 |
305HO, 58cc, 1.84"/1.5" valves |
| 14020517 |
350 |
80 |
|
| 14020555 |
305 |
81 |
|
| 14020556 |
350 |
80-81 |
|
| 14022056 |
350 |
81-85 |
|
| 14022301 |
305 |
78-79 |
|
| 14022601 |
267,305 |
80-85 |
305HO, 58cc, 1.84"/1.5" valves, 7 bolt exhaust |
| 14022801 |
305 |
80-85 |
|
| 14071114 |
350 |
80-85 |
|
| 14079261 |
350 |
86 |
|
| 14085963 |
350 |
85-86 |
|
| 14089119 |
350 |
87-88 |
|
| 14094093 |
350 |
80-87 |
|
| 14096217 |
350 |
87-up |
350/285hp crate engine, 64cc, 1.94"/1.5"
valves, 72° intake bolt angle |
| 14101081 |
305 |
87-91 |
|
| 14101083 |
350 |
|
350/285hp or 300hp crate engine, 64cc, 1.94"/1.5"
valves, 90° or 72° intake bolt angle |
| 14101128 |
350 |
86-87 |
Corvette aluminum head, 58cc, angle plug |
| 14102187 |
305 |
87-91 |
305HO, 1.85"/1.5" valves, 58cc, 7 bolt
exhaust |
| 14102191 |
305,350 |
87-up |
7 bolt exhaust |
| 14102193 |
305,350 |
87-up |
7 bolt exhaust |
| 14022301 |
305 |
80-84 |
|
| 14022601 |
267,305 |
79-85 |
|
| 14022801 |
305 |
80-86 |
|
| 24502559 |
SB2 |
96-up |
Bowtie SB2 aluminum 1st design, mirror port |
| 33417369 |
350 |
90-up |
Gen I Goodwrench, Mexican, 76cc, 1.94"/1.5" valves, 7
bolt exhaust, perimeter valve cover bolts, "heavy" casting
|
| 38998997 |
400 |
70-80 |
|
| |
| Casting #
|
Chamber |
Years |
CID & Additional
Comments |
| 330864 |
Open |
68-84 |
396, 402, 366T, 427T, 454 Truck |
| 330865 |
Open |
68-76 |
396, 402, 366T, 427T, 454 Truck |
| 330866 |
Open |
68-78 |
366T, 427 |
| 330867 |
Open |
69-73 |
427 |
| 336765 |
Open |
68-78 |
427T |
| 336768 |
Open |
73-76 |
427T |
| 336781 |
Open |
73-84 |
454, 118cc chamber, 256/114cc ports |
| 343771 |
Open |
68-86 |
366T, 427T, 454 |
| 343772 |
Open |
68-86 |
366T, 427T, 454 |
| 343783 |
Open |
70-76 |
454 |
| 346236 |
Open |
75-87 |
454, 120cc chamber, 225/116cc ports |
| 348238 |
Open |
75-83 |
454 |
| 352625 |
Open |
70-76 |
454 |
| 353049 |
Open |
73-84 |
396, 402, 454, 122cc chamber, 255/119cc ports |
| 366765 |
Open |
74-78 |
427T |
| 370696 |
-- |
65-78 |
396, 454 |
| 386781 |
Open |
73-79 |
454 |
| 473328 |
Open |
68-89 |
366T |
| 3846206 |
Closed |
65-70 |
396, 97cc chamber |
| 3856206 |
Closed |
65-83 |
396, 402, 427T, 454, 366T, 97cc chamber |
| 3856213 |
Closed |
65-82 |
366T, 427T |
| 3856260 |
Closed |
68 |
396 |
| 3872702 |
Closed |
65-66 |
396 & 427, 98cc chamber |
| 3876875 |
Open |
77-85 |
427T |
| 3904390 |
Closed |
65-67 |
396 & 427, 98cc chamber |
| 3904393 |
Open |
68-76 |
366T |
| 3908952 |
Open |
67 |
427, "M.Truck", Marine |
| 3909802 |
Closed |
65-67 |
396 & 427, 101cc chamber |
| 3917215 |
Closed |
65-69 |
396 & 427, 101cc chamber |
| 3917219 |
Closed |
66-76 |
366T, 396, 427T |
| 3931063 |
Closed |
65-72 |
396 & 427, 101cc chamber |
| 3933148 |
Closed |
69-76 |
69 396/265hp, 366T, 396, 427T, 112cc chamber |
| 3933149 |
Open |
68-76 |
427T, 122cc chamber |
| 3935401 |
Open |
67-76 |
427T |
| 3937734 |
Open |
69 |
396 |
| 3964280 |
Closed |
66-70 |
427 & 454 |
| 3964290 |
Closed |
69-76 |
396, 402, 427, 454 Big Oval Port, 101cc chamber |
| 3965198 |
Closed |
68-72 |
396 & 402 |
| 3969854 |
Closed |
68-72 |
396 & 402 |
| 3973195 |
Open |
71-76 |
402 |
| 3975950 |
Open |
69-77 |
366T, 396, 402, 427T |
| 3986133 |
Open |
68-84 |
366T & 454 |
| 3986135 |
Closed |
69-73 |
366T & 427T |
| 3986136 |
Open |
68-84 |
396, 402, 427, 454 |
| 3993820 |
Open |
68-84 |
402, 113cc chamber, 255/114 ports, 454 Passenger
and Trucks, 113cc chamber, 255/114 ports |
| 3999241 |
Open |
70-73 |
402 & 454, 113cc chamber |
| 6272290 |
Open |
72-73 |
402, 427, 454 |
| 6272292 |
Open |
70-78 |
402 & 454 |
| 10052902 |
Open |
96- |
Mk IV, 427T |
| 10101140 |
Closed |
91- |
Gen V 366T, 427T |
| 10114156 |
Open |
96- |
Gen.V & VI 454, 118cc chamber |
| 10141279 |
Closed |
96- |
"Vortec 7400", 100cc chambers |
| 10487052 |
Open |
77-90 |
366T |
| 12363391 |
Open |
96- |
Bowtie, Aluminum, Signature Series, fits MKIV, Gen.V, Gen.VI, 110cc
chamber |
| 12558162 |
Closed |
01- |
Gen.VII,"Vortec 8100", 8.1L, 496, truck |
| 12560241 |
Closed |
98- |
"Vortec 7400", 100cc chambers |
| 12562932 |
Open |
91-95 |
Gen.V, truck crate motor, 118cc chambers |
| 14081045 |
Open |
78-87 |
454 |
| 14081052 |
Open |
85-87 |
366T, 427T, 454 |
| 14092359 |
Open |
86-90 |
366T & 427T Hi Perf |
| 14092360 |
Open |
78-90 |
454 |
| *1
T = Tall Deck Block |
| |
| Casting #
|
Chamber |
Years |
CID & Additional
Comments |
| 3804391 |
Closed |
65 |
396 - 375 and 425HP |
| 3856208 |
Closed |
65-67 |
396/425hp, 109cc chamber 396/375hp "Z-16" Chevelle |
| 3873858 |
Closed |
65-66 |
396 & 427 Hi Perf, 109cc chamber |
| 3904391 |
Closed |
65-67 |
396 & 427 Hi Perf, 107cc chamber |
| 3904392 |
Closed |
67 |
Aluminum 427 - 430 & 435 HP, 107cc chamber |
| 3919328 |
Closed |
67 |
Aluminum 427 - 425 & 435 HP |
| 3919391 |
Closed |
66 |
427 - 425 HP |
| 3919838 |
Closed |
67-69 |
Aluminum 427 L-88 & L-89 |
| 3919839 |
Closed |
67-69 |
396 & 427 Hi Perf |
| 3919840 |
Closed |
65-69 |
396 & 427 Hi Perf, 107cc chamber |
| 3919842 |
Closed |
67-69 |
396 & 427 Aluminum L-88, 107cc chamber |
| 3931068 |
Closed |
66-69 |
427 Hi Perf |
| 3946074 |
Open |
69-71 |
69 427 L88, ZL1, Aluminum, 118cc chamber '71 454
LS6, "round exhaust port" |
| 3964291 |
Closed |
69-70 |
396, 402, 427, 454, 109cc chamber Large or small hex spark plugs
used |
| 3964292 |
Closed |
70 |
454 - 450 HP |
| 3994025 |
Open |
71 |
454 |
| 3994026 |
Open |
71 |
454 LS-6 - 425 HP, 118cc chamber |
| 3996074 |
Open |
71 |
454 |
| 6258723 |
Open |
71 |
454 - 425 HP |
| 6272990 |
Open |
70-76 |
454 service replacement, used on some MKIV crate engines, 118cc
chamber |
| 10045427 |
Open |
90- |
Pontiac/Chevy Aluminum, 91cc chamber Large Port,
race |
| 10049875 |
Open |
90- |
Pontiac/Chevy Aluminum Small port, race |
| 10051128 |
Open |
88 |
Bowtie, Aluminum 72cc chambers Symmetrical ports |
| 10051129 |
Open |
88 |
Bowtie, Aluminum "raw" casting, Symmetrical port |
| 12363401 |
Open |
96- |
Bowtie, Aluminum, Signature Series, fits MKIV,
Gen.V, Gen.VI, 118cc chamber |
| 12363861 |
Open |
96- |
Signatures Series, 2ND Design, Raised Port, Aluminum |
| 12562934 |
Open |
00- |
Gen.VI 502 Marine |
| 14011077 |
Open |
69-71 |
Aluminum, fits MKIV, "C-port" 118cc
chamber, also sold as a "solid" head |
| 14011077 |
Open |
69-71 |
427 & 454 Solid |
| 14044861 |
Open |
84-96 |
Bowtie, Aluminum, MkIV, "raised runners",
1st design, 105cc chamber |
| 14044861 |
|
96- |
Bowtie, Aluminum, Signature Series, fits MKIV, Gen.V, Gen.VI "raised
runners", 2nd design, 115cc chamber |
| 14044861 |
|
84-96 |
Bowtie, Aluminum, MkIV "raw" casting of "861"
MKIV 1st design |
| 14044862 |
|
84 |
Aluminum Bowtie Raised Ports, 1ST Design |
| 14096188 |
Open |
70-71 |
54 service replacement, also used on later Mark
IV LS-6, LS-7 and 454 HO crate motors, 116cc chamber |
| 14097088 |
Open |
91- |
454HO & 502HO Gen V, , 118cc chamber |
| 24502585 |
|
97 |
Olds/Chevy, DRCE 2, Pro Stock aluminum, for blocks w/4.900"
bore centers |
|