454 Big Block Chev engine 4 bolt mains Casting serial # 140155445 Mark IV version with mount point for mechanical fuel pump and two piece rear seal Cast Iron crankshaft Was installed in a boat as a Crusader Model LH350, but would work great in a truck or hot rod. Regular rotation Freshwater cooled This engine (has 2,650 hrs) has been serviced on a regular basis was running well when it was removed. Turns easily. Complete with oval port heads, cast iron intake manifold, pistons, cast iron oil pan. Marine exhaust manifolds, cast aluminum oil pan available. Likely original bore. We could pull a cylinder head to confirm. (X)