Wraith 5.0L 260hp

V8 Small Block Chevy 300cid

5.0L 280bhp V8 Performance Marine engine rebuilds This engine is specifically designed for the discerning 300 cid (5 litre) owner who needs to replace or is looking to upgrade his basic crate engine(s) for something more sophisticated. If you are looking for a faster, more reliable engine that will put that little extra sparkle back into your boats performance but at the same time improve fuel consumption, then this is the engine for you.

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5.0L 280bhp V8 Performance Marine engine rebuilds Whilst at first glance the improvement in BHP may seem modest compared to its standard factory counterpart, it should be borne in mind that this improvement in BHP, and crucially torque, is in both cases at several hundred RPM lower down the rev range. These carefully considered engineering improvements give the driving impression of a considerably faster boat but without the usual fuel penalties associated with more power.


  • Mercruiser
  • Volvo Penta

Suitable for Mercruiser's equipped with Alpha or Bravo legs. Can be used with Volvo Penta drive legs.


  • Fresh water cooling system
  • Stage 1 performance marine camshaft
  • Re-manufactured block


  • 1 year limited warranty,subject to the fitting of new cast iron exhaust manifolds
  • 2 years limited warranty when fitted with 1 piece stainless steel exhaust manifolds

Not Included

  • *New Cast iron exhaust manifold*


5.0L 280bhp V8 Performance Marine engine rebuilds We strongly recommend to all of our customers to consider trying a 1 piece stainless exhaust system and do away with the fear of leaky cast iron ones ruining your engine. You can find more detailed information on stainless steel marine exhausts as well as independent articles written by marine surveyors on the pit falls of cast iron manifolds at stainlessmarineexhausts.co.uk.

Propeller Pitch

5.0L 280bhp V8 Performance Marine engine rebuilds Depending on boat, in order to prevent over-revving, and feel the full effect of its extra torque, this engine will probably need to carry a larger diameter or coarser pitch propeller.

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Displacement 305 CID (5.0L)
Engine Type V8
Peak Torque 325-330 ft lbs @ 3500 RPM
Torque Range 300 ft lbs @ 3250 - 4400 RPM
Bore & Stroke 3.736" X 3.480" (94.9mm X 88mm)
Compression Ratio 9.5:1
Camshaft Stage 1 - Specially developed marine camshaft - delivering more torque at lower rpm.
Major Components Steel crankshaft, forged competition con rods, and performance pistons.
Head & chamber work Light reshaping of combustion chambers in cylinder heads - To improve gas flow and increase torque.
Optional Cooling System Closed fresh water cooling, Long Life 5-Year Anti-Freeze, 20 year long life silicon hoses - Protecting your engine from the inside out.
Advanced Engine Lubrication System Expertly modified oil galleries provide greatly improved lubrication to the camshaft, cam followers, gears and timing chain - For optimum engine longevity.
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