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

GM Casting Numbers - Big Block

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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