something to keep in mind...since you say youre not going to change your turbo you should just keep the stock valvetrain...the kelfords will help up top a lot...but the stock turbo is still going to fall on its face up there...
so i doubt there would be any need for you to rev past the stock limiter...it wont hurt to have the springs and retainers installed since you're going to be in there anyways...

 

The kelford 272's should really get the upgraded springs and retainers. Don't be cheap, do it right the first time. Why take the risk which could make you pay more later. I am going to be installing the kelford 272's with supertech dual springs and retainers here really soon. I plan on using them on the stock turbo for now until I have the money to upgrade the turbo.

 

you guys think kelford 280's are overkill on a ported stock 8 turbo?

 

we have kelford 280/276 combo in our shop 6765 car and they are major overkill for anything under a 35r

 

thanks

 

I Have to wonder how power delivery really compares to dyno charts.

The FP 280+ cams I have produce insane torque and response. They don't seem out of the norm on a dyno sheet though. I can play with cam timing and only lose maybe 10ft lbs down low, add maybe 100 RPM to spool and gain 10-15 HP up top. On a dyno pull, it looks like a good trade off, yet it COMPLETELY kills the response of the car on the street.

 

adding kelford 272's with correct cam timing on my stock and FP Red turbo'd car added turbo lag and decreased throttle response. just FYI

 

hmm I get mixed reviews whether Kelfords needs a valvetrain upgrade or not... I think I might just go with the S1's and call it a day. Seems like the S1 are a better match for the stock turbo power band/rev limit. Don't need to rev to 9000 on a daily driver/stock block.

 

I hit 358/358 on STM's very low reading mustang dyno with my Kelford 272's and stock turbo. It's very possible. They are really good cams

 

Kelford ftw

 

+1

I just installed arp headstuds,head gasket ,supertech springs & retainers, and kelfords 272's.I definately say do it right the first time too.If not you'll spend more money in the end.Anyways the driveability of the kelfords is awesome and I also have a evo 8 with stock turbo.GL with whatever your decision is.

 

I recently dynoed My Evo and got 366 whp and 376 tq. I have My upgrades on My sig. Soon to add licp.

 

Any ideas about cosi m2 vs kelford? The specs looks indentical?

 

I DD my car with kelford 272's. I love them.Just get a tune for the idle.

 

Kelford 264's with the stock turbo. The 272 make a lot of power over 7k RPM's, you wont be doing that with the stock turbo. If you look at the AMS shootout, they tested every cam with a 500+WHP GT35R setup. It's not apples to apples.

I have Kelfords 272 and did not make hardly any WHP with the stock 9 turbo. Although, I really fill them working at 6000-8500 RPM's with the FP Red.