GM Casting Numbers

GM Casting Numbers - Big Block

Casting # Year CID Bore Description

340220 1972-76 427 4.250 4 bolt main, tall deck truck

345014 1974-86 454 4.250

346236 1974-76 454 4.250

359070 1974-90 454 4.250

361959 1973-85 454 4.250

364776 1968-84 427 4.250 4 bolt main, tall deck truck

364779 1968-88 366 3.935 Heavy duty with thick cylinder wallstall deck truck

473478 1968-84 427 4.250 4 bolt main, tall deck truck

1401544 1975-87 454 4.250 4 bolt mains (casting number mayalso be 14015445)

3716323 396 4.094 2 & 4 bolt main with spin onoil filter

3782870 1968-76 427 4.250

3855961 1966-67 396 4.094 2 bolt main with canister oil filter(rebored at factory?)

3855961 1966-67 427 4.250 2 bolt main with canister oil filter(rebored at factory?)

3855962 1965-66 396 4.094 4 bolt main with thick cylinderwalls

3855977 1965-67 366 3.935 Heavy duty with thick cylinder wallstall deck truck

3869942 1966-67 427 4.250 2 or 4 bolt mai with thick cylinderwalls

3873858 1966 396 375, 4 bolt

3902406 1967 396 4.094 325, 350, 375, 2&4 bolt

3902466 1966-69 396 4.094 Chevelle, Pass.

3904351 1967 427 4.250 385, 390, 400, 425, 430, 435, 2&4bolt thick cylinder walls

3904354 1966-67 366 3.935 tall deck truck

3916319 1968-85 366 3.935 tall deck truck

3916321 1968 427 4.250 385, 390, 400, 425, 430, 435, 2&4bolt main

3916323 1968 396 4.094 2 & 4 bolt main

3925521 1968-85 366 3.935 tall deck truck

3935439 1968-69 427 4.250 335, 390, 400, 425, 430, 435

3935440 1968-69 396 4.094 265, 325, 350, 375, 2&4 bolt

3937724 1968-85 366 3.935 tall deck truck

3937726 1968-84 427 4.250 4 bolt main heavy duty truck

3946052 1969 427 4.250 430 ZL-1, 4 bolt Aluminum block,thin cylinder walls

3955270 1969 427 4.250 335, 390, 400, 425, 430, 435, 2&4bolt mains

3955272 1969 396 4.094 265, 325, 350, 375, 2&4 boltmain

3955274 1968-85 366 3.935 tall deck truck

3955276 1968-84 427 4.250 4 bolt main heavy duty truck

3963512 1969-71 427/454 4.250 335, 390, 400, 425 COPO, 430, 435,relievedlower cylinders & thick cylinder walls

3963513 1973-76 454 4.250

3968854 1969-72 396/402 4.094 & 4.125 2 & 4 bolt mains with mediumcylinder wall thickness

3969858 1968-84 427 4.250 4 bolt main heavy duty truck

3999289 1972-78 454 215, 235, 240, 270, 2 bolt, car& truck

3999289 ???? 454 4.250

3999290 1972 396/402 4.094 & 4.125 2 bolt

3999293 1968-85 366/427 4.094 & 4.250 2 bolt mains with canister oil filter

3999294 1968-84 427 4.250 4 bolt main heavy duty truck

6272177 1972 402 4.125

6272181 427 4.250 4 bolt main heavy duty truck

10051107 454 4.250 4 bolt main, first bowtie blockwith siamesed bores

10114182 1991-?? 454 4.250 4 bolt, Generation V block

10185050 454 4.250 Generation V block with 4 bolt mains(bowtie block), Short Deck

10237297 1996-?? 454 4.250 4 bolt, Generation VI block, Vortec7400, L-29

14041807 427 4.250

14096859 502 4.446 Generation V marine block with 4bolt mains and thin main bulkheads

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Date Added: January 21, 2008 05:44:27 AM

GM Casting Numbers - Big Block

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