Dimension
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Dimension |
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| Make/Model | Year | Engine | Part # | GM Part # | A | B |
| Full Size | ||||||
| Full Size | 1958-61 | 283, 348 | 50510 | 3990914 | 1-11/16" | 2-1/2" |
| Full Size | 1961 | 409 | 50512 | 3990916, 6258154 | 1-3/4" | 2-5/8" |
| Full Size | 1962-65 | 283, 327 | 50510 | 3990914 | 1-11/16" | 2-1/2" |
| Full Size | 1962-65 | 396, 409, 427 | 50512 | 3990916, 6258154 | 1-3/4" | 2-5/8" |
| Full Size | 1966-67 | 283, 327 | *50510 | 3990914 | 1-11/16" | 2-1/2" |
| Full Size | 1966-67 | 396, 427 | 50512 | 3990916, 6258154 | 1-3/4" | 2-5/8" |
| Full Size | 1968-69 | 307 (exc. Police) | 50510 | 3990914 | 1-11/16" | 2-1/2" |
| Full Size | 1968-69 | 307 (Police) | 50512 | 3990916, 6258154 | 1-3/4" | 2-5/8" |
| Full Size | 1968-69 | 327 | *50510 | 3990914 | 1-11/16" | 2-1/2" |
| Full Size | 1968-69 | 396, 427 | 50511 | 3962748, 3990918, 3990920 | 2-1/8" | 2-3/8" |
| Full Size | 1970-72 | 350 (w/2bbl. carb.) | 50510 | 3990914 | 1-11/16" | 2-1/2" |
| Full Size | 1970-72 | 454 | 50511 | 3962748, 3990918, 3990920 | 2-1/8" | 2-3/8" |
| Camaro | ||||||
| Camaro | 1967-68 | 302 | 50512 | 3990916, 6258154 | 1-3/4" | 2-5/8" |
| Camaro | 1967-68 | 327 | 50510 | 3990914 | 1-11/16" | 2-1/2" |
| Camaro | 1967-68 | 350, 396 | 50512 | 3990916, 6258154 | 1-3/4" | 2-5/8" |
| Camaro | 1969 | 302 | 50511 | 3962748, 3990918, 3990920 | 2-1/8" | 2-3/8" |
| Camaro | 1969 | 307 | 50510 | 3990914 | 1-11/16" | 2-1/2" |
| Camaro | 1969 | 350 | 50511 | 3962748, 3990918, 3990920 | 2-1/8" | 2-3/8" |
| Camaro | 1970-72 | 350 (Exc. Spec. Hi. Perf.) | 50510 | 3990914 | 1-11/16" | 2-1/2" |
| Camaro | 1970-72 | 350 (Spec. Hi. Perf.) | 50511 | 3962748, 3990918, 3990920 | 2-1/8" | 2-3/8" |
| Camaro | 1970-72 | 396, 402 | 50512 | 3990916, 6258154 | 1-3/4" | 2-5/8" |
| Camaro | 1974-81 | 307, 350 | 50513 | ***332648 | 2-1/2" | 2-3/8" |
| Camaro | 1982-92 | 305, 350 | **50511 | 3962748, 3990918, 3990920 | 2-1/8" | 2-3/8" |
| Chevelle | ||||||
| Chevelle | 1964-67 | 283, 327 | 50510 | 3990914 | 1-11/16" | 2-1/2" |
| Chevelle | 1964-67 | 396, 427 | 50512 | 3990916, 6258154 | 1-3/4" | 2-5/8" |
| Chevelle | 1968-69 | 307, 327, 350 | 50511 | 3962748, 3990918, 3990920 | 2-1/8" | 2-3/8" |
| Chevelle | 1968-69 | 396 | 50512 | 3990916, 6258154 | 1-3/4" | 2-5/8" |
| Chevelle | 1970-72 | 307, 350, 402, 454 | 50511 | 3962748, 3990918, 3990920 | 2-1/8" | 2-3/8" |
| Chevelle | 1973-88 | 307, 350, 402, 454 | 50513 | ***332648 | 2-1/2" | 2-3/8" |
| Chevy II, Nova | ||||||
| Chevy II, Nova | 1964-69 | 283, 327 | 50510 | 3990914 | 1-11/16" | 2-1/2" |
| Chevy II, Nova | 1968-69 | 350 | 50511 | 3962748, 3990918, 3990920 | 2-1/8" | 2-3/8" |
| Chevy II, Nova | 1968-69 | 396 | 50512 | 3990916, 6258154 | 1-3/4" | 2-5/8" |
| Chevy II, Nova | 1970-72 | 350 (Exc. Spec. Hi. Perf.) | 50510 | 3990914 | 1-11/16" | 2-1/2" |
| Chevy II, Nova | 1970-72 | 350 (Spec. Hi. Perf.) | 50511 | 3962748, 3990918, 3990920 | 2-1/8" | 2-3/8" |
| Chevy II, Nova | 1970-72 | 396, 402 | 50512 | 3990916, 6258154 | 1-3/4" | 2-5/8" |
| Chevy II, Nova | 1973-79 | 307, 305 | 50513 | ***332648 | 2-1/2" | 2-3/8" |
| Corvette | ||||||
| Corvette | 1963-82 | 305, 327, 350, 396, 427, 454 | 50512 | 3990916, 6258154 | 1-3/4" | 2-5/8" |
| Monte Carlo | ||||||
| Monte Carlo | 1970-72 | 350, 402, 454 | 50511 | 3962748, 3990918, 3990920 | 2-1/8" | 2-3/8" |
| Monte Carlo | 1973-87 | 307, 350 | 50513 | ***332648 | 2-1/2" | 2-3/8" |
*Some models use #555-50511, check dimensions of original mounts
**Use JEGS Frame Pad #555-50521
***Replaces OEM ONLY when used with #555-50520