Sorry got sidetracked with magnum research. The crazy idea was turn down the 360 crank and stroke the 318. But after doing some research I don't think it would work anyways doenst seem like they make 318 pistons short enough to make that work. Using factory pistons it would put me .06 over the deck I dont think that will work with closed chambered heads hahaha!! Maybe a set of open 360 heads might clear. Valve clearance would be a crap shoot probably.