Ram Hemi 10.5:1 Specs
Ram Hemi · 3.917" × 3.579" · 10.5:1 engine specs: 345 ci (5.7L), 8-cylinder, 3.9173" bore x 3.5787" stroke, 10.5:1 compression.
Dimensions
| Displacement | 345 ci / 5.7 L |
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| Bore | 3.9173" |
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| Stroke | 3.5787" |
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| Cylinders | 8 |
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| Compression ratio | 10.5:1 |
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| Bore/stroke ratio | 1.095 |
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Construction
| Block material | cast iron |
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| Head material | aluminum |
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| Valvetrain | OHV |
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| Fuel type | gas |
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| Advertised HP | 345–395 hp |
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What these numbers mean
| Bore/stroke character | 1.095 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
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| Mean piston speed at 6,000 RPM | 3,579 ft/min — in the range typical of performance street engines |
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| Displacement per cylinder | 43.1 ci |
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| Static compression | 10.5:1 — in the range that usually runs on pump premium |
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Variants sharing these dimensions (3)
These records share identical bore, stroke, displacement and compression. They differ by model year and factory power rating.
| Year | Advertised HP | Code |
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| — | 345 hp | Eagle, EZH |
| — | 395 hp | Eagle VVT |
| — | 395 hp | EZB, Eagle, Apache, Eagle VVT |
Vehicles (5)
- Ram 1500
- Ram 2500
- Ram 3500
- Dodge Durango
- Dodge Ram 2500
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