400 stroker cranks

4.5 stroke w/2.20 rod mains, 6.535 chebby rods, 1.120 CH (ie 4.15 crank) pistons has fit before, if you turn down the counterweights. Will need external oiling and block clearance, and probably some Mallory for balance. I have a plan to do this with a set of Victor heads; have the heads, crank and rods sitting in the basement, have to order pistons. S/F.....Ken M