Cadillac LTA Specs
Cadillac LTA engine specs: 256 ci (4.2L), 8-cylinder, 3.3858" bore x 3.5512" stroke, 9.8:1 compression.
Dimensions
| Displacement | 256 ci / 4.2 L |
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| Bore | 3.3858" |
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| Stroke | 3.5512" |
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| Cylinders | 8 |
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| Compression ratio | 9.8:1 |
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| Bore/stroke ratio | 0.953 |
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Construction
| Block material | aluminum |
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| Head material | aluminum |
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| Valvetrain | DOHC |
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| Fuel type | gas |
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| Advertised HP | 550 hp |
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What these numbers mean
| Bore/stroke character | 0.953 — square — bore and stroke are within 5%, a balanced compromise |
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| Mean piston speed at 6,000 RPM | 3,551 ft/min — in the range typical of performance street engines |
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| Displacement per cylinder | 32.0 ci |
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| Static compression | 9.8:1 — in the range that usually runs on pump premium |
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