430 "Big Port" heads is the most logical reason I can think of. They are know for their better flow characteristics
Type: Posts; User: Yacster
430 "Big Port" heads is the most logical reason I can think of. They are know for their better flow characteristics
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BigRivy- I must agree with your wisdom. I have a 64 Riviera w/ dual quads (Primary 600CFM, Secodary 750CFM - Edelbrocks) and a set of Tom Telesco's roller rockers, 3.08 Posi rear, the rest of the car...