Chrysler 345ci 12.7:1 Specs
Chrysler Chrysler 345ci · 3.920" × 3.580" · 12.7:1 engine specs: 345 ci (5.7L), 8-cylinder, 3.92" bore x 3.58" stroke, 12.7:1 compression.
Dimensions
| Displacement | 345 ci / 5.7 L |
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| Bore | 3.92" |
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| Stroke | 3.58" |
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| Cylinders | 8 |
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| Configuration | V8 |
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| Compression ratio | 12.7:1 |
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| Rod length | 6.2" |
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| Rod ratio | 1.732 |
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| Bore/stroke ratio | 1.095 |
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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 | 305 hp |
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| Years | 2009–2010 |
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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 | 3,580 ft/min — in the range typical of performance street engines |
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| Rod ratio | 1.732 — moderate — the range most production V8s fall in |
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| Displacement per cylinder | 43.1 ci |
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| Static compression | 12.7:1 — high enough that pump premium or better is normally required |
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Cylinder head
| Intake valve diameter | 2.1" |
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| Exhaust valve diameter | 1.6" |
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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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| 2009 | 305 hp | — |
| 2010 | 305 hp | — |
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