GMC 264 Specs
GMC 264 engine specs: 264 ci (4.3L), 8-cylinder, 3.75" bore x 3.65" stroke, 8:1 compression.
Dimensions
| Displacement | 264 ci / 4.3 L |
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| Bore | 3.75" |
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| Stroke | 3.65" |
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| Cylinders | 8 |
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| Compression ratio | 8:1 |
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| Bore/stroke ratio | 1.027 |
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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 | 175 hp |
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What these numbers mean
| Bore/stroke character | 1.027 — square — bore and stroke are within 5%, a balanced compromise |
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| Mean piston speed at 6,000 RPM | 3,650 ft/min — in the range typical of performance street engines |
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| Displacement per cylinder | 33.0 ci |
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| Static compression | 8:1 — low by modern standards, generally happy on regular pump fuel |
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