with the 525" making 1300HP it would take 16/18 psi i would think not having to stuff the extra psi into a smaller 368" that may need 25lbs to makeup for less cu.in.with a int gearing of 5.4/1 the pulleys would need 1.79/1 for 7,000 rpm at max rpm,flow and the F-1R at 68,000 rpm. i just wanted to bring some info to the post to relate to.
