Comp. ratio question with 58/54cc heads on stock bottom end..

[Skyman]

I would assume that the guys at AFR should know what they are talking about. And just from my general knowledge that sounds about right. 10.5:1 compression is perfect for the street too. Looks like a great combo. I would say going from 9:1 to 10.5:1 should yeild you about 35hp. They say about 25hp per point of compression, or so I've read.

Skyler

------------------
-1989 Saleen Mustang #406-
TFS Heads, Edelbrock intake, E-303, 3.73's, 1 5/8 shortys, Offroad-H, 2chamber flows, 36psi FPR, 15degrees timing, 70mm tb, 73mm maf, 24lb inj, Crank pulley, MSD6A, Alum driveshaft.

Added: B&M Ripper, Subframes, & Turndowns.