Originally Posted by
barry bledsoe
they are worth it . the chamber I think is the same on the hi po. should be 10 to 10-1/2 . that is worth 25 to 30 hp over stock. I had a 77 mustang and had been to the track many times it ran 14.10 I put 289 heads with the knot taken out. it ran 13.72 no other changes.
I've decided not to get them, I'm just gonna get a set of aluminum heads. The heads are at Rod's Muffler Shop on 50 by CiCi's if you know anyone that wants them.
Originally Posted by
GNs-r-slow
Hi-PO heads should be "peanut" shaped closed chamber close to 11.0 with flat tops they are like 52CC if I remeber correctly
Thats a lil higher than I'd like to run on pump gas. Thanks for the info
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