I have searched and cannot find any thread comparing the FP5R to other cams back to back or at all.

It would be nice if someone had it compared to a GSC S3, GSC R2, any Kelford cam etc.

The reason is that I traded for a car that had these installed and I am debating if I want to keep them after the rebuild as I will daily this Evo.

The Evo 8 is actually the red car that Moore Automotive built awhile back that supposedly made 700 on pump. 2.4LR, Curt Brown head with Kiggly Valvtrain. Turbo will be no smaller than a 6266.

Any info would be appreciated.

Thanks,

 

https://www.evolutionm.net/forums/ev...-cam-test.html

You might be able to find some info on them in this thread that AMS put together a while back.

 

Thanks..I made it through 35 pages and there was really only one major comparison to the stock turbo and then a few posts about being similar to the crane and GSC S3 cams. I guess I was seeing if anyone had first hand experience with these cams within the last few years.

 

From what i know only made for evo9 heads and are about the same size at S3's

 

I have them in an EVO 8.

The more I look the only info I can find is they are similar to the GSC S3s. I figured the lift was higher as I also saw that you can't use them on stock pistons but that could just be hearsay.

 

Years ago, FP said something to the extent of "The FP4R cams take the stock motor to the limit. The FP5R cams take the valve train to a geometry limit" when I called about them.

In effect, the FP4R are about as aggressive as you can get with stock pistons. The FP5R are about as aggressive as you can get before you start tossing followers and experiencing wear from valvetrain geometry issues.

Of course, what FP considers the limit might not be the same as what other manufacturers consider the limit. Considering the nightmare they had with the "FPX" cams and valve float issues on the DSM platform, I would bet they have a better idea then most as to where is "too far."

 

My drivetrain is pretty stout and the pistons have plenty of relief. I would however hate to float a valve after the rebuild. GSC S3 or R2s seem safer to me.

Anyone running these FP5R cams daily for more than a few thousand miles that can chime in??

 

Yes I daily my evo 8 built head fp5r cams super tech dual Springs about 8k on it so far had to replace lifters once I rolled 103k