Plymouth 413 4BBL Specs
Plymouth 413 4BBL engine specs: 413 ci (6.8L), 8-cylinder, 4.126" bore x 3.9016" stroke, 10:1 compression.
Dimensions
| Displacement | 413 ci / 6.8 L |
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| Bore | 4.126" |
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| Stroke | 3.9016" |
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| Cylinders | 8 |
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| Compression ratio | 10:1 |
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| Bore/stroke ratio | 1.058 |
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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 | 340 hp |
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What these numbers mean
| Bore/stroke character | 1.058 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
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| Mean piston speed at 6,000 RPM | 3,902 ft/min — in the range typical of performance street engines |
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| Displacement per cylinder | 51.6 ci |
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| Static compression | 10:1 — in the range that usually runs on pump premium |
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