@@ Line 152: / Line 152: @@
 .....305...76-79...2
 .....262...75-76...2...Monza V8
-.....305...77-79...2 or 4, some Canadian assembled heavy duty blocks have 4-bolt main caps
+.....305...77-79...2 or 4, some Canadian assembled heavy duty blocks have
+-bolt main caps
 .....350...78-79...4...Bowtie
 ...................4...Bowtie, siamesed, straight nodular iron main caps,
@@ Line 302: / Line 303: @@
 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,
+22551656.................4...Chevy/Olds Rocket block, 4.00"-4.190" bores,
+.45" main journal, splayed caps, dry sump,
 -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,
+22551660.................4...Chevy/Olds Rocket block, 4.00"-4.190" bores,
+main journal, splayed steel caps, wet sump,
 raised cam,
 -piece rear seal, 9.300" deck
@@ Line 359: / Line 362: @@
 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
+3782461....64-66...327......Camel hump, no accessory holes,
-3782461X...60-63...283/327..Camel hump, no accessory holes, larger 172cc/64cc port volumes, 62cc chamber
+cc/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
@@ Line 375: / Line 380: @@
 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....60-67...283..........Some marked "Made in Canada", 60cc chamber,
-3884520....62-67...327..........Some marked "Made in Canada", 60cc chamber, also used by Studebaker
+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
@@ Line 402: / Line 409: @@
 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
+3947040....68......327.........."Right angle" casting identifier, 64cc chamber,
-3947041....69-70...302/350......"Right angle" casting identifier, 64cc chamber, accessory holes, good HP head
+good HP head, used in trucks, no accessory holes
-3947041X...69-70...302/350......"Right angle" casting identifier, 64cc chamber, 165cc int. port, accessory holes, good HP head
+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,
+cc int. port, accessory holes, good HP head
 3951598....70......400..........76cc chamber
 3964286............350
@@ Line 412: / Line 422: @@
 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
+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
@@ Line 421: / Line 432: @@
 3986339X...71......307/350......74cc chamber
 3986388....68-76...307/350
-3991492....70......350..........LT1, camel hump, accessory holes, 64cc, straight plug
+3991492....70......350..........LT1, camel hump, accessory holes, 64cc,
-3991492....70-up................Over the counter, camel hump, 64cc, straight or angle plug
+straight plug
-3998916....72......350..........Also used w/'72 350 LT1, big valves, screw in studs, 76cc chamber
+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
+3998993....current..350.........Goodwrench crate motors, "Hecho en Mexico",
+cc 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
+10033867........................Aluminum , over the counter Pontiac 23º head,
-10045434........................Over the counter Pontiac 15º  head, 55cc, angle plug, raised runner, aluminum, "roll over" head
+cc, angle plug, 196cc intake port
-10051101........................Bowtie, aluminum, 55cc, angle plug, raised runner, 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
@@ Line 440: / Line 458: @@
 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
+10088113...88-up...350..........Aluminum, 58cc, angle plug,
-10093328........................Over the counter, Pontiac 15º head, aluminum, 224cc intake port, 61cc chamber, "roll over" head
+raised "D"-port exhaust, 1.94"/1.5" valves
+10093328........................Over the counter, Pontiac 15º head, aluminum,
+cc 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,
+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
+10128374...92-up...350.....Gen. 2 LT1, 53cc, angle plug, aluminum,
-10134352....Bowtie, 45cc, angle plug, "low" port, 223cc intake port, aluminum, 18º race head
+reverse flow cooling, 175cc/68cc ports
-10134363..........NOTE: This casting # has been used in several different versions of aluminum 18º and 15º Bowtie race heads.
+10134352....Bowtie, 45cc, angle plug, "low" port, 223cc intake port,
-Different chamber volumes, port volumes, port locations, valve sizes, etc. were used. Check this casting carefully
+aluminum, 18º race head
-to determine which features it may have. There are at least six different versions as of 11/99.
+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
@@ Line 464: / Line 490: @@
 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
+10205245...93......350..........Gen. 2 LT1, aluminum, reverse flow cooling,
-10207643...94-96...350..........Gen. 2 LT1, aluminum, reverse flow cooling, 175cc/68cc port volumes
+cc/68cc port volumes
-10208890...94-96...265..........Gen. 2, L99, 4.3 Liter V8, cast iron, reverse flow
+10207643...94-96...350..........Gen. 2 LT1, aluminum, reverse flow cooling,
+cc/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
+10239902...96-up...350..........Gen. 2 LT4, aluminum, reverse flow cooling,
-10239906...96-up...350.........."Vortec 5700", "L31", 64cc chamber, 170cc intake port, 1.94"/1.5" valves
+cc port, 54.4cc chamber, angle plug
-12367712...99-up................"Fast Burn", aluminum, 210cc intake port, 2.00”/1.55” valves, 62cc chamber
+10239906...96-up...350.........."Vortec 5700", "L31", 64cc chamber,
-12367713...99-up................"Fast Burn" used on ZZ430 crate motor, aluminum, 210cc intake port, 2.00”/1.55” valves,
+cc intake port, 1.94"/1.5" valves
+12367712...99-up................"Fast Burn", aluminum, 210cc intake port,
+.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,
 cc chamber
-12480005...2000.................LS1 "GTZ", aluminum, 38cc chamber, 2.125"/1.625" valves, angle plug
+12480005...2000.................LS1 "GTZ", aluminum, 38cc chamber,
+.125"/1.625" valves, angle plug
 12480011...97-up................Bowtie "SB2.2", aluminum, 2nd. version of "SB2",
 cc chamber, "mirror ports", revised valve angles & plug location
@@ Line 484: / Line 518: @@
 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,
+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
@@ Line 490: / Line 525: @@
 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
+12558062...98......350..........L31 Vortec, truck, 64cc chamber,
+.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
@@ Line 503: / Line 539: @@
 14008856...79-81...267
 14010201...82-85...305
-14011034........................Bowtie, cast iron, 64cc chamber, 184cc intake port volume, angle plug, "Phase 2" head
+14011034........................Bowtie, cast iron, 64cc chamber,
-14011049........................Bowtie, aluminum, 55cc chamber, angle plug, 180cc intake port volume, "Phase 6"
+cc intake port volume, angle plug, "Phase 2" head
-14011083...55-86...350..........Crate motor for years indicated. 285/300hp, 64cc chamber, 1.94"/1.5" valves
+14011049........................Bowtie, aluminum, 55cc chamber,
+angle plug, 180cc intake port volume, "Phase 6"
+14011083...55-86...350..........Crate motor for years indicated.
+/300hp, 64cc chamber, 1.94"/1.5" valves
 14014415...80-85...267/305
 14014416...80-86...305..........1.84"/1.5" valves, 58cc chamber
@@ Line 519: / Line 558: @@
 14022206...80......350
 14022301...80-86...305
-14022601...80-86...267/305......1.72"/1.5" or 1.84"/1.5" valves, 53cc chamber
+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
+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
+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
@@ Line 538: / Line 578: @@
 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
+14096217...55-86...350..........Crate motor, 285hp/300hp, 64cc chamber,
+º 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
+14101083...87-up...350..........Gen. 1, also used on crate motors,
+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
@@ Line 546: / Line 588: @@
 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,
+24502559...96-97................Bowtie, "SB2", 1st. version, "mirror ports",
+aluminum, 196cc port, CNC version 280cc port,
 cc chamber
-25500141........................Buick/Chevy aluminum, 10º race head, 42cc chamber, symmetrical ports, 235cc intake port volume,
+25500141........................Buick/Chevy aluminum, 10º race head,
+cc chamber, symmetrical ports, 235cc intake port volume,
 .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
+25534351C..04-up................Gen. 1 Bowtie, cast iron Vortec head,
-25534371C..04-up................Gen. 1 Bowtie, cast iron Vortec head, 206cc/77cc ports, 2.00”/1.55” valves, "large port” head
+cc/65cc ports, 2.00”/1.55” valves, "small port” head
-33417369...90-up...350..........Gen. 1 Goodwrench crate motor, "Hecho en Mexico", 76cc chamber
+25534371C..04-up................Gen. 1 Bowtie, cast iron Vortec head,
+cc/77cc ports, 2.00”/1.55” valves, "large port” head
+33417369...90-up...350..........Gen. 1 Goodwrench crate motor,
+"Hecho en Mexico", 76cc chamber
 </pre>
@@ Line 561: / Line 608: @@
 Oval includes both "peanut" (also called "round") ports and large oval ports
--326711.....................4-bolt, alum., CanAm, 4.44" bores, steel cylinder liners
+-326711.....................4-bolt, alum., CanAm, 4.44" bores,
+steel cylinder liners
 .....427T......68-85...4-bolt
 .....454.......70-86...
@@ Line 569: / Line 617: @@
 .....427T......68-85...4-bolt
 .....366T......68-90...4-bolt
-.....509.......70-71...4-bolt, alum., CanAm, 4.5" bores, steel cylinder liners
+.....509.......70-71...4-bolt, alum., CanAm, 4.5" bores,
+steel cylinder liners
 .....366T......77-78...4-bolt
 .....427T......77-90...4-bolt
@@ Line 603: / Line 652: @@
 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
+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
@@ Line 609: / Line 659: @@
 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"
+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
@@ Line 621: / Line 672: @@
 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
+12550312...427T......96-up...4-bolt, Gen. 6, 4.250" bore, fuel pump boss,
-12550313...454.......91-up...4-bolt, Gen. 5 crate motor, Gen. VI 4.25" bare block, 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
@@ Line 628: / Line 681: @@
 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
+14044807...454T..............4-bolt, Bowtie, Mark IV, CNC prep, tall deck,
+.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
+24502504...454...............4-bolt, Bowtie, Gen. 5, race prep,
-24502506...454T..............4-bolt, Bowtie, Gen. 5, race prep, 10.2” "tall" deck height
+.8” "short" deck height
-24502572.....................4-bolt, 4.5" bore Olds DRCE 2, 9.5" deck height
+24502506...454T..............4-bolt, Bowtie, Gen. 5, race prep,
-25534402.....................4-bolt, 4.590" bore Olds DRCE 3, 9.25" deck height
+.2” "tall" deck height
+24502572.....................4-bolt, 4.5" bore Olds DRCE 2,
+.5" deck height
+25534402.....................4-bolt, 4.590" bore Olds DRCE 3,
+.25" deck height
 </pre>
@@ Line 676: / Line 734: @@
 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"
+3946074....69&71...rect...OPEN...'69 427 L88, ZL1, aluminum, 118cc chamber,
-3964290....69-70...oval..CLOSED..396, 402, 427, 454, 101cc chamber, large or small hex spark plugs used
+'71 454 LS6, "round exhaust port"
-3964291....69-72...rect..CLOSED..396, 402, 427, 454, 109cc chamber, large or small hex spark plugs used,
+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
@@ Line 686: / Line 747: @@
 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
+3993820....71-84...oval...OPEN...454 passenger and trucks, 113cc chamber,
+cc/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
+6272990....70-up...rect...OPEN...454 service replacement, used on some
-10045427...........rect..........Pontiac/Chevy, aluminum, 91cc chamber, large port, race
+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
@@ Line 700: / Line 764: @@
 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
+12363391...96-up...oval...OPEN...Bowtie, aluminum, Signature Series,
-12363401...96-up...rect...OPEN...Bowtie, aluminum, Signature Series, fits Mark IV, Gen. 5, Gen. 6, 118cc chamber
+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
@@ Line 707: / Line 773: @@
 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
+14011077...69-up...rect...OPEN...aluminum, fits Mark IV, "C-port",
-14044861...84-96...rect..........Bowtie, aluminum, Mark IV, "raised runner", 1st. design, 105cc chamber
+cc chamber, also sold as a "solid" head
-14044861...96-up...rect..........Bowtie, Aluminum, Signature Series, fits Mark IV, Gen. 5, Gen. 6, "raised runner",
+14044861...84-96...rect..........Bowtie, aluminum, Mark IV, "raised runner",
+st. design, 105cc chamber
+14044861...96-up...rect..........Bowtie, Aluminum, Signature Series,
+fits Mark IV, Gen. 5, Gen. 6, "raised runner",
 nd. design, 115cc chamber
-14044861...84-96...rect..........Bowtie, aluminum, Mark IV, "raw" casting of "861" Mark IV 1st. design
+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
+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
+24502585...97......rect..........Olds/Chevy, DRCE 2, Pro Stock, aluminum,
-25534404...04......rect..........Olds/Chevy, DRCE 3, Pro Stock, aluminum, for blocks with 4.900" bore spacing
+for blocks w/4.900" bore spacing
+25534404...04......rect..........Olds/Chevy, DRCE 3, Pro Stock, aluminum,
+for blocks with 4.900" bore spacing
 </pre>
@@ Line 779: / Line 852: @@
 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
+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
@@ Line 932: / Line 1,006: @@
 = 3.736" x 3.48" (Gen. 1, 5.7" rod)
 = 3.875" x 3.25" (Gen. 1, 5.7" rod)
-= 3.779" x 3.622" ('99-later, Gen. 3, "LM7", "LS4 front wheel drive V8" 5.3L Vortec, 6.098" rod)
+= 3.779" x 3.622" ('99-later, Gen. 3, "LM7", "LS4" front wheel drive V8
+.3L Vortec, 6.098" rod)
 = 4.000" x 3.25" (Gen. 1, 5.7" rod)
 = 3.893" x 3.622" ('97-later, Gen. 3, "LS1", 6.098" rod)
@@ Line 945: / Line 1,020: @@
 Two common, non-factory small block combinations:
-= 4.155" x 3.48" (5.7" or 6.00" rod) 400 block and a 350 crank with "spacer" main bearings
+= 4.155" x 3.48" (5.7" or 6.00" rod) 400 block and a 350 crank with
-= 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
+"spacer" main bearings
+= 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
 </pre>
@@ Line 1,002: / Line 1,079: @@
 ...Mains-2.45", Rods-2.10"
-Non-production Gen. 2 combination, using Gen. 2 265 "L-99" crank in Gen. 2 350 block
+Non-production Gen. 2 combination, using Gen. 2 265 "L-99" crank in
+Gen. 2 350 block
 ...Mains- 2.45", Rods- 2.10"

Identifying Chevy engines

Revision as of 06:05, 25 January 2013

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