I have a stock short block 454. I have 781 large oval port heads that I had ported an 2.19 in, 1.88 exh valves added an milled .020 . The cam is a 629 lift with 260 duration at .050( cam specs
http://www.compcams.com/Cam_Specs/Ca...?csid=459&sb=2 ) The car will not start, it trys but just will not run. I did compression test showing 90 psi?? I know thats very low, cause of cam or flat top not going to work? :?: