While a lot of work has already been done on this 401, it’s still a builder. BLOCK: Has been cleaned, magnafluxed and includes the main caps. Bore is stock at 4.1875 inches. HEADS: Have been rebuilt with new valves and springs. Rocker arm ***emblies are included, push rods are not. CRANK: Is included: it will need a polish. What you see is what you get. There are no pistons, rods, cam, lifters, pushrods, oil pump, intake or pan. With a clean-up, this Nailhead is ready to be built to your own specs. $500 or best offer. Local pick-up.