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I picked up a bunch of small block engine parts from a friend of mine that owns a body shop for the last 43 years. Came off a 318 that he had rebuilt a couple of years ago but only put about 50 miles on his 72 Duster in all this time. The block sprung a leak right thru the water jacket to the lifter galley. Bad casting I guess. For sale is a set of small block main caps and bolts for 318-340. $50.00 plus shipping.