Silver Wraith 8.8L 495bhp

V8 Small Block Chevy 540 cid

8.8L 495bhp V8 Performance Marine engine rebuilds If you own (or wish to buy) a 502 and want Swaymar to work their magic on it, for the truly discerning owner this has got to be the way to go! Combining all the torque benefits of the longer stroke of the 496 cid, with the large bore of the 502. Particularly on the larger heavier boats, like the thunder-hawks etc. these engines will give all the sparkling performance you could ever wish for, with BHP and even more importantly torque surpassing most twin turbo diesels but all the response, silky smoothness and flexibility of petrol engines, these engines really will turn your boat into a dream machine.

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8.8L 495bhp 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 bags 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
  • Indmar
  • any boat running Chevy V8s

Volvo Penta applications, will almost certainly need a drive leg suitable for turbo diesel torque levels. Mercruiser applications, we recommend a consultation with our expert on Mercruiser out-drives.


All of our engines include a free inlet manifold inspection and reconditioning to 'as good as new'.
Note: If prior to inspection your existing manifold is un serviceable, a new one will be required.

  • Fresh water cooling system
  • Stage 1 performance marine camshaft
  • Full refurbishment and re assembly of existing ancillaries


Most but not all engines that are sea water cooled will require a new block upon rebuild.

  • Re-manufactured block
  • Brand new block


  • 1 year limited warranty,subject to the fitting of a new or refurbished inlet manifold and 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*
  • *New Inlet manifold*


 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

Propeller Pitch

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 may need to carry a larger diameter or coarser pitch propeller.

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Displacement 540 CID (8.8L)
Engine Type V8
Peak Torque 565-575 ft lbs @ 4000 RPM
Torque Range 550+ ft lbs @ 2550 - 4500 RPM
Bore & Stroke 4.500" X 4.250" (114.3mm X 107.95mm)
Compression Ratio 9.5:1
Camshaft Stage 3 - Specially developed marine camshaft - delivering more torque at lower rpm.
Major Components Steel crankshaft, forged competition con rods, and performance pistons.
Head & chamber work Heavy reshaping of combustion chambers and cylinder heads - Improve gas flow and increase torque.
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.
Dimensions (LxWxH) in 43x 30 x 22
Dimensions (LxWxH) mm 1092 x 740 x 559
Weight (lbs./kg) 948/431
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