| Small Block Chevy Engine Block Indentification |
| CID | YEAR | BORE | MAIN CAP | |||
| 262 | 1975 | 3.671 | 2 bolt ONLY | |||
| 267 | 1979 - 81 | 3.500 | 2 bolt ONLY | |||
| 305 | 1976 - 96 | 3.736 | 2 bolt ONLY | |||
| 307 | 1968 - 73 | 3.875 | 2 bolt ONLY | |||
| 327 | 1968-69 | 4.001 (2.3" main) | 2 bolt | |||
| 350 | 1968-88 | 4.001 (2.3" main) | 2 bolt | |||
| 265 | 1994 | 4.001 (2.45" main) | 2 bolt | |||
| 302 | 1968-69 | 4.001 (2.45" main) | 4 bolt | |||
| 350 | 1968-96 | 4.001 (2.45" main) | 4 bolt | |||
| 400 | 1970-72 | 4.126 (2.65" main) | 4 bolt | |||
| 400 | 1973-80 | 4.126 (2.65" main) | 2 bolt |
| YEARS | CASTING | CID | LOW POWER | HIGH POWER | MAIN CAPS | COMMENTS |
| 1980-85 | 140029 | 350 | - | - | 2 | car |
| 1973-80 | 330817 | 400 | - | - | 2 | car, truck |
| 1975 | 355909 | 262 | - | - | 2 | car, truck |
| 1976-85 | 355909 | 305 | - | - | 2 | A |
| 1975 | 360851 | 262 | - | - | 2 | Monza |
| 1976-79 | 361979 | 305 | - | - | 2 | car, truck |
| 1978-86 | 366245 | 350 | - | - | - | car |
| 1982-86 | 366286 | 350 | - | - | 4 | Chevrolet, siamese |
| 1982 | 366299 | 350 | - | - | 4 | Chevrolet, aluminium |
| 1956-67 | 383810 | 283 | - | - | 2 | - |
| 1967-68 | 389257 | 302 | - | - | 2 | Z-28 |
| 1968-73 | 391436 | 307 | - | - | 2 | - |
| 1965-67 | 393288 | 283 | - | - | 2 | car, truck |
| 1976-79 | 460776 | 305 | - | - | 2 | car, truck |
| 1976-79 | 460777 | 305 | - | - | 2 | car |
| 1978-79 | 460778 | 305 | - | - | 2 | car, truck |
| 1979-82 | 471511 | 267 | - | - | 2 | car, truck |
| 1976-85 | 581671 | 305 | - | - | 2 | A |
| 1985-94 | 1489363 | 350 | - | - | 2 | - |
| 1979-82 | 2135412 | 267 | - | - | 2 | - |
| 1979-82 | 2404929 | 267 | - | - | 2 | |
| 1973-76 | 3030817 | 400 | - | - | 2 | car, truck |
| 1958-61 | 3556519 | 283 | - | - | 2 | car, truck |
| 1955 | 3703524 | 265 | 195 | _ | 2 | car, no filter |
| 1955-56 | 3720991 | 265 | 195 | 225 | 2 | car, truck |
| 1957 | 3731548 | 283 | 220 | 283 | 2 | - |
| 1956-67 | 3736935 | 283 | - | - | 2 | - |
| 1957-59 | 3737739 | 283 | 220 | 290 | 2 | car, truck |
| 1958-62 | 3756519 | 283 | 230 | 315 | 2 | car, truck |
| 1956-67 | 3756935 | 283 | - | - | 2 | - |
| 1962-65 | 3782870 | 327 | 250 | 375 | 2 | car, truck |
| 1956-67 | 3789187 | 283 | - | - | 2 | - |
| 1962-67 | 3789817 | 327 | 210 | 275 | 2 | car, truck |
| 1961-64 | 3789935 | 283 | 230 | 315 | 2 | car, truck, Vette |
| 1966-67 | 3790721 | 283 | - | - | 2 | Chevy II |
| 1964-67 | 3791362 | 327 | 300 | 300 | 2 | Chevy II |
| 1958-62 | 3794226 | 283 | 220 | 220 | 2 | truck |
| 1968-69 | 3794460 | 327 | 250 | 250 | 2 | truck |
| 1968-69 | 3814660 | 327 | - | - | 2 | F A |
| 1968-69 | 3814660 | 302 | - | - | 4 | Camaro, Z-28, Vette |
| 1956-67 | 3832338 | 283 | - | - | 2 | - |
| 1956-67 | 3834812 | 283 | - | - | 2 | - |
| 1958-62 | 3837739 | 283 | - | - | 2 | - |
| 1957-66 | 3849852 | 283 | 220 | - | 2 | car, truck |
| 1956-67 | 3849859 | 283 | - | - | 2 | - |
| 1956-67 | 3849935 | 283 | - | - | 2 | - |
| 1964-67 | 3852174 | 327 | - | - | 2 | car, truck |
| 1968-76 | 3855961 | 350 | - | - | 2 | car |
| 1964-67 | 3858174 | 327 | 300 | - | 2 | A |
| 1964-67 | 3858180 | 327 | 250 | - | 2 | - |
| 1962-67 | 3858190 | 327 | - | - | 2 | - |
| 1966-67 | 3862194 | 283 | - | - | 2 | Chevy II |
| 1962-66 | 3864812 | 283 | 230 | - | 2 | car, truck |
| 1964-67 | 3868657 | 327 | 300 | - | 2 | |
| 1962-67 | 3876132 | 327 | - | - | 2 | |
| 1963 | 3889935 | 283 | - | - | 2 | truck |
| 1962-67 | 3892657 | 327 | - | - | 2 | car, truck |
| 1967 | 3892657 | 302 | 290 | - | Z-28, small journal | |
| 1968-69 | 3892659 | 327 | 210 | - | 2 | |
| 1962-66 | 3896944 | 283 | 230 | - | 2 | |
| 1965-67 | 3896948 | 283 | - | - | 2 | |
| 1964-67 | 3903352 | 327 | 250 | - | 2 | |
| 1969-80 | 3911460 | 350 | - | - | 2 | A |
| 1968-73 | 3914635 | 307 | - | - | 2 | car |
| 1968-73 | 3914636 | 307 | - | - | 2 | car, truck |
| 1968-69 | 3914638 | 327 | - | - | 2 | |
| 1968-73 | 3914653 | 307 | - | - | 2 | A |
| 1968-69 | 3914660 | 327 | 250 | - | 2 | truck |
| 1968-69 | 3914678 | 302 | 290 | - | 2/4 | Camaro, Z-28 |
| 1968-69 | 3914678 | 327 | 210 | 295 | 4 | car, truck |
| 1968 | 3914678 | 350 | 210 | 295 | 4 | cars |
| 1965-67 | 3932288 | 283 | - | - | 2 | A |
| 1956-67 | 3932338 | 283 | - | - | 2 | |
| 1974-75 | 3932368 | 350 | - | - | 2 | |
| 1969-73 | 3932371 | 307 | - | - | 2 | car,truck |
| 1969-73 | 3932373 | 307 | - | - | 2 | car,truck |
| 1968-69 | 3932386 | 350 | 300 | 350 | 4 | LT1,4 |
| 1968 | 3932386 | 327 | - | - | 2 | A |
| 1969 | 3932386 | 302 | 290 | - | 4 | Camaro,Z28 |
| 1969-76 | 3932388 | 350 | 165 | 300 | 2 | car,truck |
| 1968-69 | 3933100 | 327 | - | - | 2 | |
| 1968-69 | 3933180 | 327 | - | - | 2 | |
| 1968 | 3941174 | 307 | - | - | 2 | truck |
| 1956-67 | 3949852 | 283 | - | - | 2 | |
| 1973-80 | 3951509 | 400 | - | - | 2 | car,truck |
| 1970-73 | 3951511 | 400 | - | - | 4 | truck |
| 1962-67 | 3953512 | 327 | - | - | 2 | |
| 1968-69 | 3955618 | 327 | - | - | 4 | A,F,Vette |
| 1969 | 3956618 | 302 | 290 | - | 4 | Z28 |
| 1969-79 | 3956618 | 350 | 165 | 350 | 4 | car, truck, vette |
| 1969-76 | 3958618 | 350 | - | - | 2 | A |
| 1962-63 | 3959512 | 327 | 250 | - | 2 | |
| 1956-67 | 3959532 | 283 | - | - | 2 | |
| 1968 | 3970010 | 327 | - | - | 2 | A |
| 1969-79 | 3970010 | 350 | 185 | 370 | 2 or 4 | car, truck, Vette |
| 1968-76 | 3970014 | 350 | - | - | 2 | car,truck |
| 1969-73 | 3970020 | 307 | - | - | 2 | car,truck |
| 1968-76 | 6259425 | 350 | - | - | - | car,truck |
| 1980-84 | 14010201 | 305 | - | - | 2 | car,truck |
| 1980-84 | 14010202 | 305 | - | - | 2 | car,truck |
| 1980-84 | 14010203 | 305 | - | - | 2 | car, truck |
| 1980-82 | 14010205 | 267 | - | - | 2 | - |
| 1980-85 | 14010207 | 350 | - | - | 4 | truck |
| 1980-85 | 14010209 | 350 | - | - | 4 | truck |
| 1978-86 | 14010231 | 305 | - | - | 2 | - |
| 1979-82 | 14010280 | 267 | - | - | 2 | car |
| 1982 | 14011064 | 350 | - | - | 4 | Chevrolet, high tin |
| 1979-82 | 14016375 | 267 | - | - | 2 | - |
| 1979-82 | 14016376 | 267 | - | - | 2 | car |
| 1978-85 | 14016379 | 350 | - | - | - | car, truck |
| 1980-84 | 14016381 | 305 | - | - | 2 | car, truck |
| 1978-88 | 14016383 | 305 | - | - | 2 | - |
| 1979-82 | 14040205 | 267 | - | - | 2 | - |
| 1978-86 | 14049047 | 305 | - | - | 2 | |
| 1986-94 | 14079287 | 350 | - | - | - | |
| 1987 | 14088526 | 350 | - | - | 2 | Camaro |
| 1986-94 | 14088548 | 350 | - | - | - | - |
| 1986-92 | 14088551 | 305 | - | - | 2 | - |
| 1988-94 | 14093627 | 305 | - | - | 2 | - |
| 1986-94 | 14093638 | 350 | - | - | - | |
| 1988-94 | 14094766 | 305 | - | - | 2 | |
| 1986-94 | 14101148 | 350 | - | - | - | |
| 1987-88 | 14102058 | 305 | - | - | 2 | |
| 1969-85 | 14316379 | 350 | - | - | 2 |