by charmander » Thu Oct 09, 2014 4:08 pm
Any reason for bigger valve springs other than rpm?
Boost?
90 W250, 35s, 727, hx35/40, coolertubz 3" crossover, pump turned up, 366 spring, denny t stg 2, timed to the head, raptor 150, arp studs
next up: intercooler