Quote:
Originally Posted by 73ta
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.
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I can't argue with that.
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1967 Firechicken, 499", Edl heads, 262/ [email protected]" duration and 0.627"/0.643 lift SR cam, 3.90 gear, 28" tire, 3550#. [email protected] mph with a 1.45 60'. Still WAY under the rollbar rule.
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