From what I've read, Holly heads are only OK. Flow about like Edelbrock Performers. Everyone I know says to get TrickFlow Twisted Wedge or AFR. They seem to be better for street performance from what I hear. Go to Fordmuscle .com and read their "Head to Head" comparison article. Very enlightening. I'm gonna get either stage I TFTW or CNC ported AFR when I upgrade the heads. My $.02.
Rev
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'66 Coupe, 306, 300 HP, C-4, 13.97 e.t., 100.3 mph
1/4 mi.
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