Originally posted by pat mccarthy
fill it with block rock and it will take it use multi -layer steel head gaskets on the cam run the 4-7 swap you will need some head work and some killer parts. valve springs i would use isky tool room springs. titanium intakes valves. titanium retainers. miller or t@D jesel rocker arm and. a dry belt for timing jesel or comp belt and bore the cam out for roller bearing or go big block on the cam bore .and i think you will need at 13to1 and a better block would be nice. i think you need more intake cc than220
I agree with all of this except for the idea of roller bearing or bbc cam bearing size.In our 412 that turns lap after lap at 7,800 on a 1/2 mile track we have never done this or thought it necssary.The after market blocks such as the Dart block have extra oil going to the cam bearings.