Identifying Chevy engines

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===SBC engine casting numbers===
 
===SBC engine casting numbers===
−
{{Note1}} As of 05:40, 25 June 2012 (MDT) Mortec is unavailable via waybackmachine. The casting numbers from Mortec have been posted at [http://forums.corvetteforum.com/c3-tech-performance/2916259-mortec-is-gone-get-your-chevy-casting-s-while-there-hot.html '''corvetteforum.com'''].
+
{{Note1}} The Mortec site is no longer available. As of 05:40, 25 June 2012 (MDT) Mortec is unavailable via waybackmachine. The casting numbers from Mortec have been posted at [http://forums.corvetteforum.com/c3-tech-performance/2916259-mortec-is-gone-get-your-chevy-casting-s-while-there-hot.html '''corvetteforum.com''']. The Mortec info is also listed at the bottom of this page.
 
*[http://www.nastyz28.com/sbchevy/sblock.html smallblock info] from nastyz28.com  
 
*[http://www.nastyz28.com/sbchevy/sblock.html smallblock info] from nastyz28.com  
 
*[http://www.73-87.com/chevy_ids/sbcid2.htm SBC ID] from www.73-87.com
 
*[http://www.73-87.com/chevy_ids/sbcid2.htm SBC ID] from www.73-87.com
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==Resources==
 
==Resources==
 
*[[Chevy engine casting numbers]]
 
*[[Chevy engine casting numbers]]
 +
 +
===Mortec===
 +
<pre>SBC BLOCK CASTING NUMBERS
 +
 +
CASTING NUMBER.....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 V8
 +
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....307.....68....2
 +
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....2 or 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
 +
3959538....327...........2...Chevy II recessed oil filter boss, used for
 +
some Chevy II "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...69-73...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
 +
10049804.................4...Aluminum, Pontiac Super Duty version of
 +
Gen. 1 SBC, 4.00" bore, 350 mains, 2-piece rear seal, splayed caps,
 +
GTP race block
 +
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...LT5, ZR1 Vette, 375hp
 +
10125327...350...92-up...2 or 4...Gen. 2 LT1, reverse flow cooling
 +
10125327...350...96-up...2 or 4...Gen. 2 LT4, reverse flow cooling
 +
10134398.................4...Bowtie, Aluminum, 4.125" bore, 2.65" main journals
 +
10134996.................4...Bowtie, Aluminum, 4.125" bore, 2.65" main journals
 +
10153558...350...91-92...4...LT5, ZR1 Vette, 375hp
 +
10168588...265...94-96...2...L99, Gen. 2, 4.3 Liter V-8, Caprice,
 +
reverse flow cooling
 +
10199001...350...93-95...4...LT5, 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. 1 crate motors and "ZZ4",
 +
roller cam, one piece rear seal
 +
12550592...350...97-up...crossbolted block, Gen. 3, "LS1", aluminum
 +
12551358.........99-up...Gen. 3, 4.8L or 5.3L, cast iron, truck
 +
12551364...364...98-04...crossbolted cast iron Gen. 3, 6.0L, truck
 +
12559378...350...99-up...crossbolted block, Gen. 3, "LS1", aluminum
 +
12559846...350...98-up...crossbolted block, Gen. 3, "LS1", aluminum
 +
12560621...350...98-up...crossbolted block, Gen. 3, "LS1", aluminum
 +
12560626...350...99-up...crossbolted block, Gen. 3, "LS1", aluminum
 +
12560629...350...99......crossbolted block, Gen. 3, "LS1", aluminum
 +
12561168...350...01-up...crossbolted block, Gen. 3, "LS1", aluminum
 +
12562174...350...98-up...crossbolted block, Gen. 3, "LS1", aluminum
 +
12568952...364...05-up...crossbolted block, Gen. 3, 6.0L, aluminum, LS2
 +
12566910...325...04-up...crossbolted block, Gen. 3, 5.3L, aluminum, SSR truck
 +
12571048...325...04-up...crossbolted block, Gen. 3, 5.3L
 +
12573581...364...98-04...crossbolted cast iron, Gen. 3, 6.0L, truck
 +
12577184...364...98-04...crossbolted cast iron, Gen. 3, 6.0L, truck
 +
12577396.........02-up...Gen. 3, 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...87-94...2...Roller or flat tappet 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...86-90...4...One-piece rear seal
 +
14102058...305...87-91...2...Roller cam, one-piece rear seal
 +
22551656.................4...Chevy/Olds Rocket block, 4.00"-4.190" bores,
 +
2.45" main journal, splayed caps, dry sump, 2-piece rear seal, 9.025" deck
 +
22551660.................4...Chevy/Olds Rocket block, 4.00"-4.190" bores,
 +
400 main journal, splayed steel caps, wet sump, raised cam,
 +
2-piece rear seal, 9.300" deck
 +
 +
 +
SMALL BLOCK HEAD CASTING NUMBERS:
 +
 +
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 chamber
 +
340292.....70's.......Over the counter, angle plug, 64cc chamber
 +
354434.....75-79...262/267/305...60cc chamber
 +
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 chamber
 +
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 chamber
 +
3767792....60-64...283
 +
3774682....60-64...283/327......70cc chamber
 +
3774684....62-64...327..........75cc chamber
 +
3774692....58-64...283..........60cc chamber
 +
3782461....64-66...327......Camel hump, no accessory holes,
 +
160cc/62cc port volumes, 62cc chamber
 +
3782461X...60-63...283/327..Camel hump, no accessory holes,
 +
larger 172cc/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 chamber, 1.72”/1.5” valves
 +
3814482....62-67...283/327/350..75cc chamber
 +
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....67-68...307/327......75cc chamber
 +
3927185....69-76...307/327/350..70cc chamber
 +
3927186....69-70...302/350......Camel hump, 64cc chamber, accessory holes
 +
3927187....69-70...350..........Camel hump, 64cc chamber, accessory holes
 +
3927188....69......327..........74cc chamber
 +
3927188....70......307..........74cc chamber
 +
3931633....68-73...307
 +
3931635....68-76...350
 +
3931638....68......327..........Truck
 +
3932441....69-70...350..........76cc chamber
 +
3932441X...69-70...350/400......80cc chamber
 +
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 chamber, 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 chamber
 +
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..........LT1-350/370hp, camel hump, 64cc chamber
 +
3973487....71-72...350..........1.94”/1.5” or 2.02”/1.6” valves,
 +
was also used on '71 350/330hp LT1, 75cc chamber
 +
3973487X...71-72...350..........1.94”/1.5” or 2.02”/1.6” valves, 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 chamber
 +
3998920....72-73...350
 +
3998991....72-73...307/350......75cc chamber
 +
3998993....72-73...307/350......75cc chamber
 +
3998993....current..350.........Goodwrench crate motors, "Hecho en Mexico",
 +
75cc chamber
 +
3998997....72-73...350/400......76cc chamber
 +
3998997....78-84...305/350......76cc chamber
 +
4079261....75......350
 +
10033867........................Aluminum , over the counter Pontiac 23º
 +
head, 62cc, angle plug, 196cc intake port
 +
10045434........................Over the counter Pontiac 15º  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 15º head,
 +
aluminum, 224cc intake port, 61cc chamber, "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 chamber
 +
10120928...87-95...350
 +
10125320...94-96...350..........Gen. 2 LT1, cast iron version,
 +
used on "9C1" Police package, Impala SS,
 +
Cadillac Fleetwood, Buick Roadmaster, reverse flow cooling
 +
10128374...92-up...350..........Gen. 2 LT1, 53cc, angle plug,
 +
aluminum, reverse flow cooling, 175cc/68cc ports
 +
10134352........................Bowtie, 45cc, angle plug, "low" port,
 +
223cc intake port, aluminum, 18º race head
 +
10134363........................NOTE: This casting # has been used in
 +
several different versions of aluminum 18º and 15º Bowtie race heads.
 +
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 six different versions as of 11/99.
 +
10147898...95-98...350..........Gen. 1 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 port, splayed valves
 +
10185040........................Bowtie, aluminum, 45cc chamber, 2nd. version,
 +
symmetrical ports, 240cc intake port, splayed valves
 +
10205245...93......350..........Gen. 2 LT1, aluminum, reverse flow cooling,
 +
175cc/68cc port volumes
 +
10207643...94-96...350..........Gen. 2 LT1, aluminum, reverse flow cooling,
 +
175cc/68cc port volumes
 +
10208890...94-96...265..........Gen. 2, L99, 4.3 Liter V8, cast iron, reverse flow
 +
10215339...97......350..........Gen. 3, 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. 2 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 chamber,
 +
2.125"/1.625" valves, angle plug
 +
12480011...97-up................Bowtie "SB2.2", aluminum, 2nd. version of "SB2",
 +
48cc chamber, "mirror ports", revised valve angles & plug location
 +
12506450...87-95...350
 +
12509859...87-94...305
 +
12516852...87-95...350
 +
12529742...95-96...265..........Gen. 2, "L99", cast iron
 +
12551561...96......350..........Gen. 2, "LT1", aluminum
 +
12552520...97-up...305..........Vortec, truck
 +
12554290...94-96...350..........Gen. 2, "LT1", cast iron version,
 +
used on "9C1" police package, Impala SS,
 +
Cadillac Fleetwood, Buick Roadmaster, reverse flow cooling
 +
12554291...95-96...265..........Gen. 2, "L99", cast iron
 +
12555690...96......350..........Gen. 2, "LT4", aluminum
 +
12556743...99......325..........Gen. 3, 5.3L, aluminum, truck, van
 +
12558059...97......305..........Vortec, truck, 1.84"/1.5" valves
 +
12558062...98......350..........L31 Vortec, truck, 64cc chamber,
 +
1.94”/1.5”, 170cc intake port
 +
12558806...97-98...350..........Gen. 3, "LS1", aluminum, 68cc chamber
 +
12559853...99-up...350..........Gen. 3, "LS1", aluminum, 68cc chamber
 +
12559862...99-00................Gen. 3, aluminum 4.8/5.3L
 +
12559895...00-up...325..........Gen. 3, aluminum, Vortec 5.3L
 +
12561706...01-04................Gen. 3, 5.3L, aluminum
 +
12561873...99-01...364..........Gen. 3, 71cc, iron
 +
12562317...01-04...364..........Gen. 3, 71cc, aluminum
 +
12564241...00-up...350..........Gen. 3, "LS1", aluminum, 68cc chamber
 +
12564243...01-up...350/364......Gen. 3, "LS6", "LS2", aluminum
 +
12572035...01-04...364..........Gen. 3, 6.0L, aluminum, 71cc chamber
 +
14008856...79-81...267
 +
14010201...82-85...305
 +
14011034........................Bowtie, cast iron, 64cc chamber,
 +
184cc intake port volume, angle plug, "Phase 2" head
 +
14011049........................Bowtie, aluminum, 55cc chamber,
 +
angle plug, 180cc intake port volume, "Phase 6"
 +
14011083...55-86...350..........Crate motor for years indicated.
 +
285/300hp, 64cc chamber, 1.94"/1.5" valves
 +
14014415...80-85...267/305
 +
14014416...80-86...305..........1.84"/1.5" valves, 58cc chamber
 +
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 chamber
 +
14022801...80-86...305
 +
14024816...........350..........76cc chamber, 1.94”/1.5” valves,
 +
Gen. 1 crate motor
 +
14034806...78-82...267
 +
14034807...78-86...305
 +
14034808...80-86...350
 +
14034808...96-up...350..........76cc chamber, 1.94"/1.5" valves,
 +
Gen. 1 Goodwrench crate motor
 +
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. 2, LT1, aluminum
 +
14089119...86-88...350
 +
14094093...86-88...350
 +
14096217...55-86...350..........Crate motor, 285hp/300hp, 64cc chamber,
 +
72º or 90º center intake manifold bolt angles
 +
14101081...87-95...305
 +
14101083...87-up...350..........Gen. 1, also used on crate motors,
 +
285 or 300 hp, 64cc chamber, 72º 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
 +
22542525........................Dart/Olds/Chevy aluminum,
 +
14º or 17º race head
 +
24502559...96-97................Bowtie, "SB2", 1st. version,
 +
"mirror ports", aluminum, 196cc port, CNC version 280cc port, 38cc chamber
 +
25500141........................Buick/Chevy aluminum, 10º race head,
 +
42cc chamber, symmetrical ports, 235cc intake port volume, 2.1"/1.625" valves
 +
25534351C..04-up................Gen. 1 Bowtie, cast iron Vortec head,
 +
175cc/65cc ports, 2.00”/1.55” valves, "small port” head
 +
25534371C..04-up................Gen. 1 Bowtie, cast iron Vortec head,
 +
206cc/77cc ports, 2.00”/1.55” valves, "large port” head
 +
33417369...90-up...350..........Gen. 1 Goodwrench crate motor,
 +
"Hecho en Mexico", 76cc chamber
 +
 +
 +
BIG BLOCK CHEVY BLOCK CASTING NUMBERS:
 +
NOTE: T = tall deck
 +
Oval includes both "peanut" (also called "round") ports and large oval ports
 +
 +
0-326711.....................4-bolt, alum., CanAm, 4.44" bores,
 +
steel cylinder liners
 +
340220.....427T......68-85...4-bolt
 +
345014.....454.......70-86...
 +
346236.....454.......75-76...2-bolt
 +
359070.....454.......70-90...
 +
361959.....454.......73-90...2 or 4 bolt
 +
364776.....427T......68-85...4-bolt
 +
364779.....366T......68-90...4-bolt
 +
399204.....509.......70-71...4-bolt, alum., CanAm, 4.5" bores,
 +
steel cylinder liners
 +
399293.....366T......77-78...4-bolt
 +
473478.....427T......77-90...4-bolt
 +
495102.......................4-bolt, alum., CanAm, 4.5" bores
 +
3782870....427T......68-76...4-bolt
 +
3824553....366T......66-67...4-bolt
 +
3855961....396.......65-66...2 or 4 bolt
 +
3855961....427.......66......2-bolt
 +
3855962....396.......65-66...4-bolt
 +
3855977....366T......66-73...4-bolt
 +
3869942....427.......66-67...2 or 4 bolt
 +
3902406....396.......67......2 or 4 bolt
 +
3904351....427.......67......2 or 4 bolt
 +
3904354....366T......66-76...4-bolt
 +
3916319....366T......68......4-bolt
 +
3916321....427.......68......2 or 4 bolt
 +
3916323....396.......68......2 or 4 bolt
 +
3925521....427T......68-85...4-bolt
 +
3935439....427.......68-69...2 or 4 bolt
 +
3935440....396.......68-69...2 or 4 bolt
 +
3937724....366T......68-85...4-bolt
 +
3937726....427T......68-84...4-bolt
 +
3946052....427.......69......4-bolt, alum. ZL-1, Mark IV
 +
3946053....427.......97-up...4-bolt, alum. ZL1, 2nd. version, Mark IV
 +
3955270....427.......69......2 or 4 bolt
 +
3955272....396.......69......2 or 4 bolt
 +
3955274....366T......68-85...4-bolt
 +
3955276....427T......68-73...4-bolt
 +
3963512....427.......69......2 or 4-bolt
 +
3963512....454.......70-76...2 or 4-bolt
 +
3969852....366T......68-84...4-bolt
 +
3969854....396.......69......2 or 4-bolt
 +
3969854....402.......70-72...2 or 4-bolt
 +
3969858....427T......68-84...4-bolt
 +
3999289....454.......71-79...2 or 4-bolt, some "CE" replacement blocks
 +
had four bolt main caps
 +
3999290....396.......68-69...2 or 4-bolt, truck
 +
3999290....402.......70-72...2 or 4-bolt, truck
 +
3999290....402.......72......2 or 4 bolt, passenger car
 +
3999293....366T......68-90...4-bolt
 +
3999294....427T......68-84...4-bolt
 +
10051107...454...............4-bolt, Bowtie, Mark IV, 9.8" deck,
 +
siamesed bores, 4.25" semi-finished bores, can be bored to 4.50"
 +
10069282...366T......90-91...4-bolt, Mark IV, tall deck
 +
10069284...427T..............4-bolt, Mark IV, tall deck
 +
10069286...454.......90-91...4-bolt, Mark IV, short deck
 +
10114182...454.......91-up...4-bolt, Gen. 5
 +
10114183...366T......91-up...4-bolt, Gen. 5
 +
10114184...427T......91-up...4-bolt, Gen.5
 +
10134366...454T..............4-bolt, Bowtie, Gen. 5, tall deck
 +
10185050...454...............4-bolt, Bowtie, Gen. 5, short deck
 +
10237297...454.......96-up...4-bolt, Vortec 7400", "L-29" Gen. 6
 +
10237299...427T......96-up...4-bolt, Gen. 6, 7.0L, truck
 +
10237300...502.......96-up...4-bolt, Gen. 6, 4.466" bore
 +
12550312...427T......96-up...4-bolt, Gen. 6, 4.250" bore, fuel pump boss,
 +
clutch linkage pivot boss
 +
12550313...454.......91-up...4-bolt, Gen. 5 crate motor, Gen. VI 4.25"
 +
bare block, fuel pump boss
 +
12556110...496.......01-up...4-bolt, Gen. 7, 8.1L, "Vortec 8100", truck
 +
12561357...454.......96-up...4-bolt, Gen. 6
 +
12561358...502...............4-bolt, Gen. 6
 +
14015443...454.......87-90...2 or 4-bolt, Mark IV, truck, motorhome
 +
14015445...454.......78-90...2 or 4-bolt
 +
14044807...454T..............4-bolt, Bowtie, Mark IV, CNC prep, tall deck,
 +
4.25" or 4.495" bores
 +
14096859...502...............4-bolt, Gen. 5, HO
 +
24502504...454...............4-bolt, Bowtie, Gen. 5, race prep,
 +
9.8” "short" deck height
 +
24502506...454T..............4-bolt, Bowtie, Gen. 5, race prep,
 +
10.2” "tall" deck height
 +
24502572.....................4-bolt, 4.5" bore Olds DRCE 2, 9.5" deck height
 +
25534402.....................4-bolt, 4.590" bore Olds DRCE 3, 9.25" deck height
 +
 +
 +
BIG BLOCK CHEVY HEAD CASTING NUMBERS:
 +
 +
330864.....68-84...oval...OPEN...396, 402, 366T, 427T, 454 Truck
 +
330865.....68-84...oval...OPEN...396, 402, 366T, 427T, 454 Truck
 +
330866.....68-78...oval...OPEN...366T, 427T
 +
330867.....68-73...oval...OPEN...427T
 +
336765.....68-78...oval...OPEN...427T
 +
336768.....73-76...oval...OPEN...427T
 +
336781.....73-85...oval...OPEN...454, 118cc chamber, 256cc/114cc ports
 +
343771.....68-86...oval...OPEN...366T, 427T, 454
 +
343772.....68-86...oval...OPEN...366T, 427T, 454
 +
343783.....70-76...oval...OPEN...454 truck
 +
346236.....75-87...oval...OPEN...454, 120cc chamber, 225cc/116cc ports
 +
352625.....70-76...oval...OPEN...454 truck
 +
353049.....73-84...oval...OPEN...454, 122cc chamber, 255cc/119cc ports
 +
366765.....74-78...oval...OPEN...427T
 +
473328.....68-69...oval...OPEN...366T
 +
3856206....65-66...oval..CLOSED..396, 97cc chamber
 +
3856208....65......rect..CLOSED..396/425hp, 109cc chamber
 +
396/375hp "Z-16" Chevelle
 +
3856213....66-82...oval..CLOSED..366T, 427T
 +
3856260....68......oval..CLOSED..396 truck
 +
3872702....65-66...oval..CLOSED..396, 427, 98cc chamber
 +
3873858....65-67...rect..CLOSED..396, 427, 109cc chamber
 +
3876875....77-85...oval...OPEN...427T
 +
3904390....67......oval..CLOSED..396, 427, 98cc chamber
 +
3904391....67......rect..CLOSED..396, 427, 107cc chamber
 +
3904392....67......rect..CLOSED..427, aluminum, L88, L89, 107cc chamber
 +
3904393....68-76...oval...OPEN...366T
 +
3908952....67......oval...OPEN...427, truck, marine
 +
3909802....67......oval..CLOSED..396, 427, 101cc chamber
 +
3917215....67-68...oval..CLOSED..396, 427, 101cc chamber
 +
3917219....68-85...oval...OPEN...366T, 427T
 +
3919840....67-69...rect..CLOSED..396, 427, 107cc chamber
 +
3919842....68-69...rect..CLOSED..396, 427, aluminum L88, L89, 107cc chamber
 +
3931063....68-69...oval..CLOSED..396, 402, 427, 101cc chamber
 +
3933148....69-84...oval...OPEN...'69 396/265hp, 366T, 427T, 112cc chamber
 +
3933149....68-76...oval...OPEN...427T, 122cc chamber
 +
3935401....68-76...oval...OPEN...427T
 +
3946074....69&71...rect...OPEN...'69 427 L88, ZL1, aluminum, 118cc chamber,
 +
'71 454 LS6, "round exhaust port"
 +
3964290....69-70...oval..CLOSED..396, 402, 427, 454, 101cc chamber,
 +
large or small hex spark plugs used
 +
3964291....69-72...rect..CLOSED..396, 402, 427, 454, 109cc chamber,
 +
large or small hex spark plugs used, crate motor usage in years after 1970
 +
3965198....68-69...oval..CLOSED..396 truck
 +
3975950....68-70...oval...OPEN...396, 402 Truck, 366T, 427T
 +
3986133....68-85...oval...OPEN...366T, 427T, 454 truck
 +
3986135....69-73...oval...OPEN...366T, 427T
 +
3986136....68-84...oval...OPEN...366T, 427T, 454 truck
 +
3993820....71......oval...OPEN...402, 113cc chamber, 255cc/114cc ports
 +
3993820....71-84...oval...OPEN...454 passenger and trucks, 113cc chamber,
 +
255cc/114cc ports
 +
3994026....71......rect...OPEN...454 LS6, 118cc chamber
 +
3999241....72......oval...OPEN...402, 454, 113cc chamber
 +
6272292....70-78...oval...OPEN...402, 454
 +
6272990....70-up...rect...OPEN...454 service replacement, used on some
 +
Mark IV crate engines, 118cc chamber
 +
10045427...........rect..........Pontiac/Chevy, aluminum, 91cc chamber,
 +
large port, race
 +
10049875...........rect..........Pontiac/Chevy, aluminum
 +
Small port, race
 +
10051128...........rect..........Bowtie, aluminum, 72cc chamber,
 +
symmetrical ports
 +
10051129...........rect..........Bowtie, aluminum "raw" casting,
 +
symmetrical ports
 +
10052902...........oval...OPEN...Mark IV, 427T
 +
10101140...91-up...oval..CLOSED..Gen. 5 366T, 427T
 +
10114156...91-up...oval...OPEN...Gen. 5 & 6 454, 118cc chamber
 +
10141279...96-up...oval..CLOSED.."Vortec 7400", 100cc chambers
 +
10487052...77-90...oval...OPEN...366T
 +
12363391...96-up...oval...OPEN...Bowtie, aluminum, Signature Series,
 +
fits Mark IV, Gen. 5, Gen. 6, 110cc chamber
 +
12363401...96-up...rect...OPEN...Bowtie, aluminum, Signature Series,
 +
fits Mark IV, Gen. 5, Gen. 6, 118cc chamber
 +
12558162...01-up...oval..CLOSED..Gen. 7, "Vortec 8100", 8.1L, 496, truck
 +
12560241...98-up...oval..CLOSED.."Vortec 7400", 100cc chamber
 +
12562932...91-95...oval...OPEN...Gen. 5, truck crate motor, 118cc chamber
 +
12562933...91-95...oval...OPEN...Gen. 5, 118cc chamber
 +
12562934...00-up...rect...OPEN...Gen. 6, 502 marine
 +
14011077...69-up...rect...OPEN...aluminum, fits Mark IV, "C-port",
 +
118cc chamber, also sold as a "solid" head
 +
14044861...84-96...rect..........Bowtie, aluminum, Mark IV, "raised runner",
 +
1st. design, 105cc chamber
 +
14044861...96-up...rect..........Bowtie, Aluminum, Signature Series,
 +
fits Mark IV, Gen. 5, Gen. 6, "raised runner", 2nd. design, 115cc chamber
 +
14044861...84-96...rect..........Bowtie, aluminum, Mark IV, "raw" casting
 +
of "861" Mark IV 1st. design
 +
14081045...78-87...oval...OPEN...454
 +
14081052...85-87...oval...OPEN...366T, 427T, 454 Truck, marked "HiPerf"
 +
14092359...86-90...oval...OPEN...366T, 427T, marked "HiPerf"
 +
14092360...86-90...oval...OPEN...454 truck, "peanut" round ports
 +
14096188...70-71...rect...OPEN...454 service replacement, also used on
 +
later Mark IV LS-6, LS-7 and 454 HO crate motors, 116cc chamber
 +
14097088...91-up...rect...OPEN...Gen. 5, 454/502 HO, 118cc chamber
 +
24502585...97......rect..........Olds/Chevy, DRCE 2, Pro Stock aluminum,
 +
for blocks w/4.900" bore spacing
 +
25534404...04......rect..........Olds/Chevy, DRCE 3, Pro Stock, aluminum,
 +
for blocks with 4.900" bore spacing
 +
 +
 +
CHEVY SMALL BLOCK CRANKSHAFT CASTING NUMBERS:
 +
 +
WITH 2-PIECE REAR MAIN OIL SEAL
 +
 +
1130.......327.......forged..medium journal...3.25" stroke
 +
1178.......302.......forged..medium journal...3.00" stroke
 +
1181.......305,350...cast....medium journal...3.48" stroke
 +
1182.......350.......forged..medium journal...3.48" stroke
 +
2680.......327.......forged..small journal....3.25" stroke
 +
2690.......350.......forged..medium journal...3.48" stroke
 +
3279.......302.......forged..medium journal...3.00" stroke
 +
3474.......283.......forged..small journal....3.00" stroke, military tank use
 +
4577.......327.......forged..small journal....3.25" stroke
 +
4672.......327.......forged..medium journal...3.25" stroke
 +
310514.....350.......cast....medium journal...3.48" stroke
 +
330550.....350.......cast....medium journal...3.48" stroke
 +
354431.....262.......cast....medium journal...3.10" stroke
 +
3727449....283.......forged..small journal....3.00" stroke
 +
3729449....265.......forged..small journal....3.00" stroke
 +
3734627....327.......forged..small journal....3.25" stroke
 +
3735236....265,283...forged..small journal....3.00" stroke
 +
3735263....283.......forged..small journal....3.00" stroke
 +
3782680....327.......forged..small journal....3.25" stroke
 +
3814671....327.......forged..small journal....3.25" stroke
 +
3815822..265,283,302.forged..small journal....3.00" stroke
 +
3835236....283.......forged..small journal....3.00" stroke
 +
3836266....283.......forged..small journal....3.00" stroke
 +
3848847....283.forged or cast..sm. journal....3.00" stroke
 +
3849847....283.......forged..small journal....3.00" stroke
 +
3876764....283.forged or cast..sm. journal....3.00" stroke
 +
3876768....283.......forged..small journal....3.00" stroke
 +
3884577....327.......forged..small journal....3.25" stroke
 +
3892690....350.......forged..medium journal...3.48" stroke
 +
3911001....307,327...cast....medium journal...3.25" stroke
 +
3911011....307,327...cast....medium journal...3.25" stroke
 +
3914672....327.......forged..medium journal...3.25" stroke
 +
3923279....302.......forged..medium journal...3.00" stroke
 +
3932442..267,305,350..cast...medium journal...3.48" stroke
 +
3941174....307,327...cast....medium journal...3.25" stroke
 +
3941178....302.......forged..medium journal...3.00" stroke
 +
3941182....350.......forged..medium journal...3.48" stroke
 +
3941188....350.......forged..medium journal...3.48" stroke
 +
3949847....283..forged or cast..small journal...3.00" stroke
 +
3951130....327.......forged..medium journal...3.25" stroke
 +
3951529....400.......cast....large journal....3.75" stroke
 +
 +
WITH 1-PIECE REAR MAIN OIL SEAL
 +
 +
10168568...265.......cast....medium journal...3.00" stroke
 +
12552215...364.......cast....medium journal...3.62" stroke, Gen. 3, 6.0L
 +
12552216...325,350,364.......cast....medium journal...3.62" stroke,
 +
Gen. 3 5.7L LS1, 5.3L, 6.0L
 +
12553312...293.......cast....medium journal, 3.27" stroke, Gen. 3, 4.8L
 +
12553482...293.......cast....medium journal, 3.27" stroke, Gen. 3, 4.8L
 +
14088526...305,350...cast....medium journal...3.48" stroke
 +
14088532...350.......forged..medium journal...3.48" stroke
 +
14088535...305,350...cast....medium journal...3.48" stroke
 +
14088552...350.......forged..medium journal...3.48" stroke
 +
 +
 +
ZR1, "LT5", 350 DOHC
 +
 +
10106122...350.......forged..large 2.76" journal...3.66" stroke
 +
 +
 +
CHEVY BIG BLOCK CRANKSHAFT CASTING NUMBERS:
 +
 +
3.76" STROKE WITH 2-PIECE REAR MAIN OIL SEAL
 +
Used on '65-'90 Mark IV 366T, 396, 402, 427 and 427T
 +
 +
6223.......396,402,427...forged, 1053 steel
 +
7115.......396,402,427...forged, nitrided, cross-drilled, 5140 steel
 +
3804816....396,402,427...cast
 +
3856223....396...forged
 +
3863114....402...
 +
3863144....396,402...
 +
3874874....396,402...
 +
3879621....427...forged
 +
3882841....396...forged, cross drilled, nitrided
 +
3882842....427...forged, cross drilled, nitrided
 +
3882847....
 +
3882848....
 +
3882849....427...forged
 +
3887114....396...forged, nitrided, 5140 steel
 +
3904815....396,402...cast, nodular iron
 +
3941180....
 +
3942411....
 +
3965746..........semi- finished, forged
 +
3993804..........raw, 5140 steel
 +
 +
3.76" STROKE WITH 1-PIECE REAR MAIN OIL SEAL
 +
Used on '91-up Gen. 5 and Gen. 6, 366T, 427T
 +
 +
10114186...427T...forged, 1053 steel
 +
10114187...366T...cast
 +
10114189...427T...cast
 +
 +
 +
4.00" STROKE WITH 2-PIECE REAR MAIN OIL SEAL
 +
Used on '70-90 Mark IV 454 or Mark IV 502
 +
 +
3520.......454...forged, cross-drilled, 1053 steel
 +
3521.......454, 502...forged, cross-drilled, 5140 steel
 +
3524.......454...forged
 +
7416.......454, 502...forged, cross-drilled, 1053 steel
 +
7463.......454...forged
 +
336782.....454...cast
 +
353039.....454...cast
 +
353638.....454...
 +
359730.....454...
 +
3962523....454...forged
 +
3963523....454...
 +
3963524....454...forged
 +
3967416....454...forged
 +
3967463....454...forged
 +
3975945....454
 +
3963521....454...forged, cross drilled, 5140 steel
 +
3965753..........semi-finished, forged, 5140 steel
 +
3975495....454
 +
3993878....454...forged
 +
10051169...454...forged raw casting
 +
 +
4.00" STROKE WITH 1-PIECE REAR MAIN OIL SEAL
 +
Used on '91-up Gen. 5 and Gen. 6 454 or 502
 +
 +
10114188...454......cast
 +
14097044...454, 502..forged, 1053 steel
 +
 +
 +
348/409/427 W-ENGINE BLOCK CASTING NUMBERS:
 +
 +
3732755.....348......59-61
 +
3732811.....348......58
 +
3751872.....348......58
 +
3755011.....348......59-61
 +
3771705.....348......59-61
 +
3782012.....348......58-61
 +
3788068.....409......62-63
 +
3795623.....409......61
 +
3798962.....348......62-65...truck
 +
3815707.....348......58-61
 +
3830814.....427......63......"Z11" (4.312" bore x 3.65" stroke)
 +
3830814.....409......63-64
 +
3839752.....409......62-63
 +
3839754.....409......65
 +
3844422.....409......63-65
 +
3857655.....348......62-65...truck
 +
3857656.....409......64-65
 +
3860386.....409......62-64
 +
3860387.....348......58
 +
 +
 +
348/409/427 W-ENGINE HEAD CASTING NUMBERS:
 +
 +
3732791.....348......58-60
 +
3758379.....348......59-61...250 hp
 +
3759256.....348......58
 +
3759332.....348......58-60
 +
3764702.....348......60......truck
 +
3767738.....348......59-60...250 hp
 +
3781147.....348......60-61...HiPerf, 2.06"/1.72" valves
 +
3781173.....348......60......1.94"/1.66" valves
 +
3795586.....348/409..61......HiPerf, 2.06"/1.72" valves
 +
3814690.....409......62-63...HiPerf, 2.19"/1.72" valves
 +
3815643.....348/409..58-62...truck, industrial
 +
3815857.....348/409..58-62...truck
 +
3819333.....348/409..62-65...HD Truck
 +
3830817.....409......63-65...340 hp
 +
3837731.....427......63......"Z11" (4.312" bore x 3.65" stroke)
 +
3852583.....409......63-65...HiPerf, 2.19"/1.72" valves
 +
 +
CHEVY 348/409/427 W-ENGINE CRANKSHAFT CASTING NUMBERS:
 +
 +
3732692...348...forged...3.25" stroke
 +
3733223...348...forged...3.25" stroke
 +
3733226...348...forged...3.25" stroke
 +
3741640...348...forged...3.25" stroke
 +
3741642...348...forged...3.25" stroke
 +
3788072...409...forged...3.50" stroke
 +
3795589...409...forged...3.50" stroke
 +
3824553...348...forged...3.25" stroke
 +
3829027...409...forged...3.50" stroke
 +
3837466...409,427 "Z11"...forged...3.65" stroke
 +
3838416...409...forged...3.50" stroke
 +
 +
 +
CHEVY SMALL BLOCK BORE AND STROKE
 +
 +
262 = 3.671" x 3.10" (Gen. 1, 5.7" rod)
 +
265 = 3.750" x 3.00" ('55-'57 Gen. 1, 5.7" rod)
 +
265 = 3.750" x 3.00" ('94-'96 Gen. 2, 4.3 liter V8 "L99", 5.94" rod)
 +
267 = 3.500" x 3.48" (Gen. 1, 5.7" rod)
 +
283 = 3.875" x 3.00" (Gen. 1, 5.7" rod)
 +
293 = 3.779" x 3.27" ('99-later, Gen. 3, "LR4" 4.8L Vortec, 6.278" rod)
 +
302 = 4.000" x 3.00" (Gen. 1, 5.7" rod)
 +
305 = 3.736" x 3.48" (Gen. 1, 5.7" rod)
 +
307 = 3.875" x 3.25" (Gen. 1, 5.7" rod)
 +
325 = 3.779" x 3.622" ('99-later, Gen. 3, "LM7", "LS4 front wheel drive V8"
 +
5.3L Vortec, 6.098" rod)
 +
327 = 4.000" x 3.25" (Gen. 1, 5.7" rod)
 +
345 = 3.893" x 3.622" ('97-later, Gen. 3, "LS1", 6.098" rod)
 +
350 = 4.000" x 3.48" (Gen. 1, 5.7" rod)
 +
350 = 4.000" x 3.48" ('96-'01, Gen. 1, Vortec, 5.7" rod)
 +
350 = 3.900" x 3.66" ('89-'95, "LT5", in "ZR1" Corvette 32-valve DOHC,
 +
5.74" rod)
 +
364 = 4.000" x 3.622" ('99-later, Gen. 3, "LS2", "LQ4" 6.0L Vortec, 6.098" rod)
 +
376 = 4.065" x 3.622" (2007-later, Gen. 4, "L92", Cadillac Escalade, GMC Yukon)
 +
383 = 4.000" x 3.80" ('00, "HT 383", Gen. 1 truck crate motor, 5.7" rod)
 +
400 = 4.125" x 3.75" (Gen. 1, 5.565" rod)
 +
427 = 4.125" x 4.00" (2006 Gen. 4, LS7 SBC, titanium rods)
 +
 +
Two common, non-factory small block combinations:
 +
377 = 4.155" x 3.48" (5.7" or 6.00" rod) 400 block and a 350 crank with
 +
"spacer" main bearings
 +
383 = 4.030" x 3.75" (5.565" or 5.7" or 6.0" rod) 350 block and a 400 crank,
 +
main bearing crank journals cut to 350 size
 +
 +
 +
CHEVY BIG BLOCK V8 BORE AND STROKE
 +
 +
366T (tall deck) = 3.935" x 3.76"
 +
396 = 4.096" x 3.76"
 +
402 = 4.125" x 3.76"
 +
427 = 4.250" x 3.76"
 +
427T (tall deck) = 4.250" x 3.76"
 +
454 = 4.250" x 4.00"
 +
496 = 4.250" x 4.37" (2001 Vortec 8100, 8.1 liter)
 +
502 = 4.466" x 4.00"
 +
572T (tall deck) = 4.560" x 4.375" (2003 "ZZ 572" crate motor)
 +
 +
ALL production big blocks used a 6.135" length rod.
 +
 +
 +
CHEVY 348-409 V8 BORE AND STROKE
 +
 +
348 = 4.125" x 3.25" (6.125" rod)
 +
409 = 4.312" x 3.50" (6.010" rod)
 +
427 = 4.312" x 3.65" (6.135" rod), 1963 "Z11" SHP drag race
 +
 +
 +
CHEVY SMALL BLOCK CRANKSHAFT JOURNAL SIZES
 +
 +
Gen. 1, "Small Journal"
 +
265...Mains- 2.30", Rods- 2.00"
 +
283...Mains- 2.30", Rods- 2.00"
 +
302...Mains- 2.30", Rods- 2.00"
 +
327...Mains- 2.30",  Rods- 2.00"
 +
 +
 +
Gen. 1, "Medium Journal", includes Vortec 305 and 350 through '98
 +
262...Mains- 2.45", Rods- 2.10"
 +
267...Mains- 2.45", Rods- 2.10"
 +
302...Mains- 2.45", Rods- 2.10"
 +
305...Mains- 2.45", Rods- 2.10"
 +
307...Mains- 2.45", Rods- 2.10"
 +
327...Mains- 2.45", Rods- 2.10"
 +
350...Mains- 2.45", Rods- 2.10"
 +
 +
 +
Gen. 1, "Large Journal"
 +
400...Mains- 2.65", Rods- 2.10"
 +
 +
 +
Non-production Gen. 1 combination using Gen. 1 400 crank in Gen. 1 350 block
 +
383...400 crank, Mains cut to 2.45", Rods- 2.10"
 +
 +
 +
Non-production Gen. 1 combination, using Gen. 1 350 crank in Gen. 1 400 block
 +
377..."Spacer" or "thick" main bearings with 350 crank, Rods- 2.10"
 +
 +
 +
Gen. 2, "Medium Journal", includes "L-99" 265, "LT1" 350, "LT4" 350
 +
265...Mains- 2.45", rods-2.10"
 +
305...Mains- 2.45", Rods-2.10"
 +
350...Mains-2.45", Rods-2.10"
 +
 +
 +
Non-production Gen. 2 combination, using Gen. 2 265 "L-99" crank in Gen. 2 350 block
 +
302...Mains- 2.45", Rods- 2.10"
 +
 +
 +
Gen. 3, includes '97-2005 "LS1" Corvette, Firebird, Camaro
 +
345...Mains- 2.558", Rods- 2.10"
 +
 +
 +
Corvette "ZR1", DOHC, "LT5"
 +
350...Mains- 2.76", Rods- 2.10"
 +
 +
 +
CHEVY BIG BLOCK CRANKSHAFT JOURNAL SIZES
 +
 +
366T
 +
396
 +
402
 +
427
 +
427T
 +
454
 +
502
 +
ALL Chevy big blocks used Mains- 2.7488"-2.7495", Rods- 2.20"
 +
 +
 +
CHEVY W-ENGINE CRANKSHAFT JOURNAL SIZES
 +
 +
348
 +
409
 +
427 Z-11
 +
All W-motors used Mains- 2.50", Rods- 2.20"
 +
</pre>
 +
  
 
[[Category:Identification and decoding]]
 
[[Category:Identification and decoding]]
 
[[Category:Engine]]
 
[[Category:Engine]]
 
[[Category:GM]]
 
[[Category:GM]]

Revision as of 08:05, 10 October 2012

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