What parts in a GEX engine are new, or rebuilt ?
It depends on the type of engine you’ve ordered. Typically, the heads are remanufactured or new (depending on the order), New pistons and cylinders, rebushed and resized rods, reground crank, reground cam, resurfaced flywheel, reground lifters, all new bearings, gaskets, and seals, and a remanufactured case.