Chevy Casting Numbers, Small Block Chevy Engine Block:
| Casting Number | Displacement | Years Used | Main Cap Bolts | Notes |
| 140029 | 350cid V8 | 1980 - 1984 | 2 bolt mains | |
| 330817 | 400cid V8 | 1972 - 1980 | 2 bolt mains | |
| 355909 | 262cid V8 | 1975 | 2 bolt mains | |
| 355909 | 305cid V8 | 1976 - 1979 | 2 bolt mains | |
| 360851 | 262cid V8 | 1975 - 1976 | 2 bolt mains | Monza V-8 |
| 361979 | 305cid V8 | 1977 - 1979 | 2 or 4 bolt mains | Some Canadian assembled heavy duty blocks have 4-bolt main caps |
| 366245 | 350cid V8 | 1978 - 1979 | 4 bolt mains | Bowtie |
| 366286 | 4 bolt mains | Bowtie siamesed, straight nodular iron main caps, 2-piece seal, 4.00-4.150" bores, 2.45" main journals | ||
| 366298 | 4 bolt mains | Bowtie Aluminum, billet main caps, 3.398" bore with sleeves, two piece rear main seal. | ||
| 366299 | 4 bolt mains | Bowtie Aluminum, nodular iron splayed caps, wet sump, 4.00" bore | ||
| 389257 | 302cid V8 | 1967 | 2 bolt mains | |
| 393288 | 283cid V8 | 1965 - 1967 | 2 bolt mains | |
| 460703 | 350cid V8 | 1978 | 4 bolt mains | |
| 460776 | 305cid V8 | 1978 - 1979 | 2 bolt mains | |
| 460777 | 305cid V8 | 1978 - 1979 | 2 bolt mains | |
| 460778 | 305cid V8 | 1978 - 1979 | 2 or 4 bolt mains | Some Canadian assembled heavy duty truck blocks have 4-bolt main caps |
| 471511 | 267cid V8 | 1979 - 1982 | 2 bolt mains | |
| 3556519 | 283cid V8 | 1958 - 1961 | 2 bolt mains | |
| 3703524 | 265cid V8 | 1955 | 2 bolt mains | No oil filter |
| 3720991 | 265cid V8 | 1956 - 1957 | 2 bolt mains | |
| 3731548 | 265cid V8 | 1957 | 2 bolt mains | No side motor mounts |
| 3731548 | 283cid V8 | 1957 | 2 bolt mains | No side motor mounts |
| 3737739 | 283cid V8 | 1958 - 1964 | 2 bolt mains | |
| 3756519 | 283cid V8 | 1958 - 1962 | 2 bolt mains | |
| 3782870 | 327cid V8 | 1962 - 1967 | 2 bolt mains | |
| 3789817 | 283cid V8 | 1962 - 1964 | 2 bolt mains | |
| 3789817 | 327cid V8 | 1962 - 1967 | 2 bolt mains | |
| 3789935 | 283cid V8 | 1961 - 1964 | 2 bolt mains | |
| 3790721 | 283cid V8 | 1962 - 1964 | 2 bolt mains | Chevy II recessed oil filter boss |
| 3790721 | 327cid V8 | 1965 - 1966 | 2 bolt mains | Chevy II recessed oil filter boss |
| 3791362 | 327cid V8 | 1962 - 1967 | 2 bolt mains | Chevy II recessed oil filter boss |
| 3792563 | 327cid V8 | 1965 | 2 bolt mains | |
| 3792582 | 283cid V8 | 1964 - 1965 | 2 bolt mains | |
| 3794226 | 283cid V8 | 1958 - 1963 | 2 bolt mains | |
| 3794460 | 327cid V8 | 1962 - 1964 | 2 bolt mains | |
| 3830944 | 327cid V8 | 1963 | 2 bolt mains | |
| 3834810 | 283cid V8 | 1964 - 1966 | 2 bolt mains | |
| 3834812 | 283cid V8 | 1962 - 1963 | 2 bolt mains | |
| 3837739 | 283cid V8 | 1958 - 1962 | 2 bolt mains | |
| 3849852 | 283cid V8 | 1957 - 1966 | 2 bolt mains | |
| 3849935 | 283cid V8 | 1965 - 1967 | 2 bolt mains | |
| 3858174 | 327cid V8 | 1964 - 1967 | 2 bolt mains | |
| 3858180 | 327cid V8 | 1964 - 1967 | 2 bolt mains | |
| 3858618 | 350cid V8 | 1968 - 1976 | 2 bolt mains | |
| 3862194 | 283cid V8 | 1965 - 1967 | 2 bolt mains | Chevy II recessed oil filter boss |
| 3862812 | 283cid V8 | 1962 - 1964 | 2 bolt mains | |
| 3892657 | 302cid V8 | 1967 | 2 bolt mains | Z-28 Camaro |
| 3892657 | 327cid V8 | 1967 | 2 bolt mains | |
| 3892657 | 350cid V8 | 1967 | 2 bolt mains | Camaro |
| 3896944 | 283cid V8 | 1966 - 1967 | 2 bolt mains |
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