Rebuilt engines sold on an exchange basis.We NEED a rebuildable core back from you, but can provide a core until we receive one back from you.Here is what is includedAll our rebuilds include a chemically cleaned block and all attaching castings. Reground crankshaft, New Camshaft, cam gear, lifters, pushrods, rocker assys, main bearings, gaskets and seals. New cast pistons, rod bearings and bore...