Brand: GMC Size: 454/7.4 Year: 91-96 HP: 330 A rebuilt engine of highest quality. We can replace most of the marine engines on the market, Mercruicer, Volvo Penta, etc. New parts which are used at mounting in the factory. (Only high quality products.) Valves (Manley) Valve springs and keepers (Elgin) Pistons (Badger) Molly rings (Hastings) Camshaft (GM - orginal) Cam bearings (Durabond) Timing gears and chain (Dynagear) Oil pump (Dynagear) Gaskets (FelPro)