Quote Originally Posted by bigdude
I put stainless valve in and port matched intake and heads. The big thing is to not overcam it. I used a comp extreme energy 268 cam and kit with springs and could bust my 33 loose at 30mph with a 342 ratio. Had a buddy with a 5 window with a 406 with alum heads and could dust him easy.The key is a good combo of cam -intake-carb- heads and exhaust, with a good ratio.I followed a buildup in hotrod? and they used the same setup and got 420h.p.I believe.
I doubt that a 268 Comp Cam in a 383 would make 420 hp with 441 heads.
Don't always believe the magizine's either.
They are in the business to sell them and the people that advertise in them are also in the magizines engine build-ups.