Swaymar Marine provides top quality performance marine engines to discerning UK boat owners. With over 30 years experience designing and developing engines, Swaymar, along side world renowned expert David Vizard have produced a unique selection of top quality, finely balanced, hand crafted performance marine engines.Based around the Chevy Big and Small block V8 , Swaymar marine can supply Short engine, Long Engine and Complete engine solutions for both Volvo Penta and Mercruiser installations. Offering; Increased Fuel Economy; More Torque at lower RPM; Increased Reliability and Greater Top Speed.Speak to our team and see how we can get it right for you.