The Cummins 6CTA 450 (often called the “450 Diamond”) is a highly reliable 8.3-liter, inline 6-cylinder marine diesel engine. It features a mechanical fuel system and produces 430 brake horsepower (bhp) at 2,600 RPM, with its “450” designation referencing metric horsepower.
Core Engine Specs
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- Configuration : Inline 6-cylinder
- Displacement : 8.3 liters (504.5 cubic inches)
- Horsepower : 430 bhp (450 mhp) @ 2600 RPM
- Fuel System : Bosch P7100 mechanical injection
- Aspiration : Turbocharged and seawater aftercooled
- Dry Weight : ~1,400 lbs.
- Bore and Stroke : 4.49 in x 5.32 in (114 mm x 135 mm)
- Compression Ratio : 17.0:1
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