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CHEVY V-8 CASTING NUMBERS

CHEVY BIG BLOCK V-8 CASTING NUMBERS

BBC BLOCKS

340220.....427T......68-85
345014.....454.......70-76
359070.....454.......70-76
361959.....454.......73-90
364776.....427T......68-85
364779.....366T......68-90
399204.....509.......70-71 Alum., CanAm, 4.5" bores, Cylinder liners
399289.....454.......73-79
399293.....366T......77-78
473478.....427T......77-90
3824553....366T......66-67
3855961....396.......65-66
3855961....427.......66
3855962....396.......65-66
3855977....366T......66-73
3869942....427.......66-67
3902406....396.......67
3904351....427.......67
3904354....366T......66-76
3916319....366T......68
3916321....427.......68
3916323....396.......68
3925521....366T......68-85
3935439....427.......68-69
3935440....396.......68-69
3937724....366T......68-85
3937726....427T......68-84
3946052....427.......69 Alum. ZL-1
3946053....427.......97 Alum. ZL-1, 2nd version
3955270....427.......69
3955272....396.......69
3955274....366T......68-85
3955276....427T......68-73
3963512....427.......69
3963512....454.......70-76
3969854....402.......69-72
3969858....427T......68-84
3999289....454.......72-79
3999290....396.......68-69 Truck
3999290....402.......70-72 Truck
3999290....402.......72....Passenger
3999293....366T......68-90
3999294....427T......68-84
10051107...454.............Bowtie, MkIV, Short deck, CNC prep, 4.25" bore
10068286...454.......90
10114182...454.......91-up. Gen.V
10114183...366T......91-up. Gen.V
10114184...427T......91-up. Gen.V
10134366...454T.............Bowtie, Gen.V, Tall deck
10185050...454..............Bowtie, Gen.V, Short deck
10237297...454.......96-up, "Vortec 7400", "L-29"
10237300...502.......96-up, Gen.VI, 4.466" bore 
12550313...454.......91-up, Gen. V crate motor, Gen. VI 4.25" bare block, fuel pump boss
14015443...454.......87-90, MkIV Truck, Motorhome
14015445...454.......78-90
14044807...454T............Bowtie, MkIV, Tall deck, 4.25" bore or 4.500" bores
14096859...502.............Gen.V, HO
24502504...454.............Bowtie, Gen.V, Race prep, 9.8 "short" deck height
24502506...454T............Bowtie, Gen.V, Race prep, 10.2 "tall" deck height
24502572...................4.5" bore Olds DRCE 2,
                           9.5" deck height
T = Tall deck


BBC HEADS



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
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
352625.....70-76...oval...OPEN...454 Truck
353049.....73-84...oval...OPEN...454
366765.....74-78...oval...OPEN...427T
386781.....73-79...oval...OPEN...454
473328.....68-69...oval...OPEN...366T
3856206....65-66...oval..CLOSED..396
3856208....65......rect..CLOSED..396/425hp
                                 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
3873858....65-67...rect..CLOSED..396, 427
3876875....77-85...oval...OPEN...427T
3904390....67......oval..CLOSED..396, 427
3904391....67......rect..CLOSED..396, 427
3904392....67......rect..CLOSED..427 Aluminum, L88, L89
3904393....68-76...oval...OPEN...366T
3909802....67......oval..CLOSED..396, 427
3917215....67-68...oval..CLOSED..396, 427
3917219....68-85...oval...OPEN...366T, 427T
3919840....67-69...rect..CLOSED..396, 427 
3919842....68-69...rect..CLOSED..396, 427, Aluminum L88, L89
3931063....68-69...oval..CLOSED..396, 402, 427
3933148....69-84...oval...OPEN...'69 396/265hp, 366T, 427T
3933149....68-76...oval...OPEN...427T
3935401....68-76...oval...OPEN...427T
3946074....69&71...rect...OPEN...'69 427 L88, ZL1, Aluminum
                                 '71 454 LS6, "round exhaust port"
3964290....69-70...oval..CLOSED..396, 402, 427, 454
                                 Large or small hex spark 
                                 plugs used
3964291....69-70...rect..CLOSED..396, 402, 427, 454
                                 Large or small hex spark 
                                 plugs used
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....71-84...oval...OPEN...402
3993820....71-84...oval...OPEN...454 Truck
3994026....71......rect...OPEN...454 LS6
3999241....72......oval...OPEN...402, 454
6272292....70-78...oval...OPEN...402, 454
6272990....70-up...rect...OPEN...454 service replacement, used on some MKIV crate engines
10045427...........rect..........Pontiac/Chevy Aluminum
                                 Large Port, race
10049875...........rect..........Pontiac/Chevy Aluminum
                                 Small port, race
10051128...........rect..........Bowtie, Aluminum 68cc chambers
                                 Symmetrical ports
10051129...........rect..........Bowtie, Aluminum "raw"
                                 casting, Symmetrical ports
10101140...91-up...oval..CLOSED..Gen.V 366T, 427T
10114156...94-up...oval...OPEN...Gen.V & VI 454
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 MKIV, Gen.V, Gen.VI
12363401...96-up...rect...OPEN...Bowtie, Aluminum, Signature
                                 Series, fits MKIV, Gen.V, Gen.VI
12363425...96-up...rect..........Bowtie, Aluminum, Signature
                                 Series, fits MKIV, Gen.V, Gen.VI
                                 "raised runners", 2nd design "861"
12363861...84-96...rect..........Bowtie, Aluminum, MkIV, 
                                 "raised runners", 1st design

12363861...96-up...rect..........Bowtie, Aluminum, Signature
                                 Series, fits MKIV, Gen.V, Gen.VI
                                 "raised runners", 2nd design
12363862...84-96...rect..........Bowtie, Aluminum, MkIV
                                 "raw" casting of "861" MKIV
                                 1st design
14011077...69-up...rect...OPEN...Aluminum, fits MKIV, "C-port"
                                 also sold as a "solid" head
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...86-88...oval...OPEN...454 Truck
14096188...70-71...rect...OPEN...454 service replacement
14097088...91-up...rect...OPEN...Gen.V 454/502 HO 
24502585...97......rect..........Olds/Chevy, DRCE 2,
                                 Pro Stock aluminum, for blocks w/4.900" bore centers

T = Tall deck