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.
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 |