The Engine Block Casting code is one of the best ways to identify a Chevy engine block. This engine Casting number is usually found at the rear of the block on the left or drivers side on top of the bellhousing flange.

View Big Block Engine Casting Codes

Chevy Big Block Engine Block Codes (ALL)

Casting Years CID Main Comment
1401544 1975-87 454 truck
340220 1972-76 427 tall truck
345014 1974-86 454 truck
346236 1974-76 454 2 Chevelle, Monte Carlo
353049 1973 454 corvette
359070 1974-90 454 truck
361959 1973-85 454 car & truck
364776 1968-84 427 tall truck
364779 1968-88 366 tall truck
3755011 1959-61 348 2 250, 280, 305, 320, 335
3771705 1959-61 348 2 250, 280, 305, 320, 340, 350, 2-bolt
3782870 1968-76 427 tall truck
3788068 1962-63? 409 2 340, 380, 400, 409, 425, 2-bolt
3795623 1961 409 2 360, 2-bolt Impala SS
3798962 1961 348 2 250, 280, 305, 340, 350, 2-bolt
3830814 1963-64 409/427 2 340, 400, 425, 427ci-430hp, 2-bolt
3844422 1963?-64 409 2 340, 400, 425, 2-bolt
3855061 1966-67 396
3855961 1966-67 396 2 passenger, chevelle
3855962 1965-66 396 4 passenger, Chevelle, Z16, Corvette
3855977 1965-67 366 tall truck
3857656 1965 409 2 340, 400, 2-bolt
3866961 1966-69 396 Chevy, Chevy truck
3869942 1966-67 427 2/4 corvette, passenger
3873858 1966 396 4
3902406 1967 396 2/4 Camaro, Chevelle
3902466 1965-67 396
3904351 1967 427 2/4 385, 390, 400, 425, 430, 435, corvette
3904354 1966-67 366 tall truck
3916319 1968-85 366 tall truck
3916321 1968 427 2/4 385, 390, 400, 425, 430, 435, corvette
3916323 1968 396 2/4 camaro, chevy II, chevelle
3918319 1966-70 366 Chevy truck, GMC, tall truck
3925521 1968-85 366 tall truck
3928319 1969-73 366 GMC, tall truck
3935439 1968-69 427 2/4 335, 390, 400, 425, 430, 435, Corvette
3935440 1968-69 396 2/4 Chevelle, Camaro, Nova
3937724 1968-85 366 tall truck
3937726 1968-84 427 tall truck
3946052 1969 427 4 ZL-1, aluminum, Camaro, Corvette
3955270 1969 427 2/4 335, 390, 400, 425, 430, 435 Corvette, passenger
3955272 1969 396/402 2/4 Camaro, Chevelle, Chevy II, passenger
3955274 1968-85 366 tall truck
3955276 1968-84 427 tall truck
3963512 1969-71 427 2/4 335, 390, 400, 425 COPO, 430, 435, Camaro, Corvette
3963512 1969-72 454 2/4 345, 360, 365, 390, 425, 450, Chevelle, Corvette, Monte Carlo
3963513 1973-76 454
3965440 1968-69 396
3965449 1968-72 396
3965540 1968 396
3969854 1969-72 396/402 2/4 240, 265, 300, 325, 330, 350, 375, Camaro, Chevelle, Chevy II
3969854 1969-73 454 2/4
3969858 1968-84 427 tall truck
3999289 1972-78 454 2 Chevelle, Corvette, Monte Carlo, truck
3999290 1972 402 2 Chevelle, Camaro
3999293 1968-85 366 tall truck
3999294 1968-84 427 tall truck
473478 1968-84 427 tall truck
6272176 1968-76 366 Chevy, GMC, tall truck
6272177 1972 402
6272181 1973-76 427 tall truck

 

 

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