Oldsmobile 455 Specs
Oldsmobile 455 engine specs: 455 ci (7.5L), 8-cylinder, 4.1252" bore x 4.3" stroke, 10.5:1 compression.
Dimensions
| Displacement | 455 ci / 7.5 L |
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| Bore | 4.1252" |
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| Stroke | 4.3" |
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| Cylinders | 8 |
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| Compression ratio | 10.5:1 |
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| Bore/stroke ratio | 0.959 |
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Construction
| Block material | cast iron |
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| Head material | cast iron |
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| Valvetrain | OHV |
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| Fuel type | gas |
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| Advertised HP | 370 hp |
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What these numbers mean
| Bore/stroke character | 0.959 — square — bore and stroke are within 5%, a balanced compromise |
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| Mean piston speed at 6,000 RPM | 4,300 ft/min — in the range typical of performance street engines |
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| Displacement per cylinder | 56.9 ci |
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| Static compression | 10.5:1 — in the range that usually runs on pump premium |
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Vehicles (6)
- Oldsmobile 442
- Oldsmobile Toronado
- Oldsmobile Cutlass
- Oldsmobile 98
- Oldsmobile Delta 88
- Oldsmobile Cutlass Supreme
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