Mechanical setup

I went through all these cooling issues on my 499" trying different radiators, fans, water wetters, water pumps and anything else I could think of and nothing worked until I followed the Contour fan setup posted by Goldduster 318. No problem since, if interested do a search and solve your problem
roccodart. I use to make and experiment w/ the restriction washers in my 406 sbc, just didn`t dawn on me when u said that ! ????
I don't have room enough for a ford contour fan, my 10,000 rpm flex fan seems like its going to be better than the steel blade fan I went back to, after trying the dual 14" fans.