Ram Magnum 8.4:1 Specs
Ram Magnum · 4.000" × 3.882" · 8.4:1 engine specs: 488 ci (8L), 10-cylinder, 4" bore x 3.8819" stroke, 8.4:1 compression.
Dimensions
| Displacement | 488 ci / 8 L |
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| Bore | 4" |
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| Stroke | 3.8819" |
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| Cylinders | 10 |
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| Compression ratio | 8.4:1 |
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| Bore/stroke ratio | 1.03 |
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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 | 300–310 hp |
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What these numbers mean
| Bore/stroke character | 1.030 — square — bore and stroke are within 5%, a balanced compromise |
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| Mean piston speed at 6,000 RPM | 3,882 ft/min — in the range typical of performance street engines |
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| Displacement per cylinder | 48.8 ci |
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| Static compression | 8.4:1 — low by modern standards, generally happy on regular pump fuel |
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Variants sharing these dimensions (2)
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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| — | 300 hp | V10 8.0L |
| — | 310 hp | Magnum V10, 8.0L V10, ECB |
Vehicles (4)
- Ram 2500
- Ram 3500
- Dodge Ram 2500
- Dodge Ram 3500
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