Quote:
Originally Posted by AG
I agree, 600 hp with headers and I know I'll be killing hp with the RA manifolds. That's why I am struggling with the decision. I'll either use a TII or an RPM intake and dyno the motor with headers first and then with manifolds and then make my decision.
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30-50 hp drop was noticeable in my 462" 570 HP engine. Headers are a pain in the ass, but worth it IMHO. Spent money cnc porting heads & intake to gain HP, not going to leave that much on the table. Stocker or under 500 HP manifolds make sense.