Wraith 5.7L 335hp

V8 Small Block Chevy 350cid

5.7L 335bhp V8 Performance Marine engine rebuilds This engine is specifically designed for the discerning 335 cid (5.7 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.

Get a quote today

5.7L 335bhp V8 Performance Marine engine rebuilds A glance at the improvement in BHP and specification will show that this engine gives surprisingly good value for money. Like all Swaymar special series engines this too delivers a lot more torque and BHP several hundred rpm lower down the rev range than its factory replacement counterpart. Specifically designed for Hi-torque, this engine is perfect for marine applications. These carefully considered engineering improvements result in a considerably faster boat but without the usual fuel penalties associated with more power.


  • Mercruiser
  • Volvo Penta
  • any boat running Chevy V8s

Only suitable for Mercruiser's equipped with Bravo legs. Can be used with most Volvo Penta drive legs.


  • Fresh water cooling system
  • Full refurbishment and re assembly of existing external ancillaries


  • 1 year limited warranty,subject to fitting 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.

Get a quote today


Displacement 350 CID (5.7L)
Engine Type V8
Peak Torque 370 ft lbs @ 4100 RPM
Torque Range 350+ ft lbs @ 2700 - 4700 RPM
Bore & Stroke 4.030" X 3.480" (101.6mm X 88.5mm)
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.
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.
Get a quote today