Pontiac Ponti 2004 346 350HP Specs
Pontiac Ponti 2004 346 350HP engine specs: 346 ci (5.7L), 6-cylinder, 3.898" bore x 3.622" stroke, 10.2:1 compression.
Dimensions
| Displacement | 346 ci / 5.7 L |
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| Bore | 3.898" |
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| Stroke | 3.622" |
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| Cylinders | 6 |
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| Configuration | V8 |
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| Compression ratio | 10.2:1 |
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| Rod length | 6.1" |
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| Rod ratio | 1.684 |
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| Bore/stroke ratio | 1.076 |
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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 | 350 hp |
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| Years | 2004 |
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What these numbers mean
| Bore/stroke character | 1.076 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
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| Mean piston speed at 6,000 RPM | 3,622 ft/min — in the range typical of performance street engines |
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| Rod ratio | 1.684 — moderate — the range most production V8s fall in |
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| Displacement per cylinder | 57.7 ci |
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| Static compression | 10.2:1 — in the range that usually runs on pump premium |
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