john.schuber

iTrader: (3)

I'm trying to get 500whp on the stock block with the evo red. Is Jun 272 or GSC S2's with kiggly racings springs and retainers a good idea. I have a ix so I'm assuming a smooth idle won't be to hard to tune for. I was wondering if this is a good upgrade path and if that kind of power will be okay with a stock bottom end and only spings retainers and bolts on the head? I also would like to be able to rev to 8500 or 9000 as well. Sorry for all the questions.

SpoolnupTuning

iTrader: (20)

I would def say s2's cause ive already got a car there! As far as springs, i would buy supertect dual vavle springs. Because they will let you rev to 10k rpm, not sure if i would go that far on stock bottom end but if you ever build it you would have them. You will def need arp head studs also with this turbo if your gonna turn the boost up! Dont be sorry for questions, its better to mod it right!

Ev0cRaZy

iTrader: (24)

Def. go S2's

Shacochis06

M2's FTW getting it tuned tues at cbrd hopefully does well

TalonFiero

iTrader: (18)

If you have a IX look into the FP4Rs cams. Insane MIVEC performance, I gained a few hundrend in spool up on the stock turbo, I hit 300 ftlbs of torque around 3000-3100 rpms on 28psi.

scheides

iTrader: (10)

+1 on the FP 4R, as long as you can get them! Otherwise, Cossie's FTW

john.schuber

iTrader: (3)

what's wrong with juns?

shuttlegoose

iTrader: (17)

hard to find and can be expensive, plus they are pretty aggressive.

SuPeRNeT

iTrader: (13)

Juns are bad *** if you can afford em.. get the Juns!!!

Colt4g63

iTrader: (8)

JUN's FTW!

EVO8URV8

iTrader: (1)

Kelfords

LoKiEvo

iTrader: (4)

I would also suggest getting ARP Rod Bolts if you plan on making that power and reving that high. Other than that Juns if you can get them.

Erik@MIL.SPEC

iTrader: (94)

The Kelford 272's, the FP 4R's, the Cosworth M2's and the GSC S2's all seem to be in the same relative area with regards to performance.

markymark1082

iTrader: (4)

Some people have started to think that Kelford and GSC cams are the same with different names. Just a thought.

deadbeatrec

iTrader: (9)

WAT?

first off, is this english?

u dont want to go with dual springs because of the excesive wear on the valvetrain unless u plan on running really high in the RPM range. i would say 8500 is just fine with single springs. the red will die off well b4 10k as well, and u are crazy if u are running 10k on a stock bottom end!!!