Quote:

#302 heads with 1.88/1.60 valves and a max port job will be good for around a 450 HP engine.




If I may, our 366 in our 74 RR dynoed a 503hp. With a fully hogged out set of 302's w/ 2.05/1.60 valves. I never expected the heads to last. Its coming up on 10 years now w/o any major problems other then a blown head gasket.

As always, results my vary