Vcious04

iTrader: (16)

What springs do I REALLY need with this cam? WIll 918's work?

ArrestMeRed99Z28

iTrader: (1)

NO they will not work, and if they do work they will not work very long. You'll need a dual spring set up that is rated to hold the lift of a TRex, which is .608/.612 assuming a stock rocker or stock rocker ratio. Thunder Racing recomends either a Crane Cams dual spring set up and they offer a Comp Cams dual spring for an additional $250. Good luck and buy some ear plugs

SLP4CamaroSS

iTrader: (16)

just go to byunspeed.com and buy the patirot gold kit for liek $240

monicaz28

iTrader: (5)

Everyone I know, myself included, runs the PRC springs with all of our big cams. Not a bad price either, here's a link:
http://www.texas-speed.com/shop/item...d=173&catid=48

The stunningman

iTrader: (47)

Are you running 918s with your MS4?

V6 Bird

iTrader: (15)

you can read cant you?

Randy WS6

iTrader: (69)

I use the PRC duel springs with my T-Rex .609/.614 good for .660 lift for two years now with no problems at all,and shifting at 7600 rpm's and i have them on my new LS2 418cid with a Crane cam .650/.650 lift.

The stunningman

iTrader: (47)

'91 LX Coupe - Black, LS6 block, scat H beams, Mahle pistons, MS4 Cam, TSP1.0 CNC LS6 Heads (.040, 11.5:1), Victor jr Intake, Speed Demon 750, AJE tubular 4.6 k-member, AJE tubular lower c/a's, gran coil overs, lakewood 90/10's, 50/50 rears, tubular upper/lower rear control arms, moroso trick rear springs, TH350 w/4000 stall, and a NOS Direct Port. Tagged & Inspected.


Do tell!

mattraypharbor

iTrader: (2)

i have a cutom grind thats bigger than the t-rex im still on stock heads im using the 921 spring kit...