coltboostin Posted March 6, 2011 Report Share Posted March 6, 2011 Hello all. I have several sets of Evo 9 beehive springs and featherlight retainers I have been collecting from doing head-work here and there. These have been proven to 9000rpm (with Comp2's) on one customer build, and 780whp@42psi in another. Unless you are running some custom COMP cam with a ridiculous ramp rate or 50++psi, this is all the vale spring you will ever need. Sets $80 shipped/insured/pay-paled to the lower 48. $75 if paying cash/money order, and $70 local pick up. Link to comment Share on other sites More sharing options...
Recommended Posts