Porsche MA1/76 Specs
Porsche MA1/76 engine specs: 244.1 ci (4L), 6-cylinder, 4.0157" bore x 3.2087" stroke, 12.9:1 compression.
Dimensions
| Displacement | 244.1 ci / 4 L |
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| Bore | 4.0157" |
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| Stroke | 3.2087" |
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| Cylinders | 6 |
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| Compression ratio | 12.9:1 |
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| Bore/stroke ratio | 1.252 |
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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 | 500 hp |
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What these numbers mean
| Bore/stroke character | 1.252 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
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| Mean piston speed at 6,000 RPM | 3,209 ft/min — conservative for a street engine |
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| Displacement per cylinder | 40.7 ci |
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| Static compression | 12.9:1 — high enough that pump premium or better is normally required |
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