Boost Level Estimate
F-1R
7.125" 8-rib crank pulley
3.7" blower pulley
236/245//598/612//115 cam
O-ringed stage III heads
402 stroker
I have a 7.25" crank and a 3.4" blower on my 370 with an F1, not sure what its gonna do yet.......also have a Griffin FMIC
north ? south?







