Best valve spring kit?

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Oct 2, 2008 | 04:24 PM

camaroandreas

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Best valve spring kit?

Is there any valve spring kit with more seat load then the PRC kit?
It´s not good enough for my 30 psi and 7500 rpm.

Thanks for help.

/Andreas

Oct 2, 2008 | 05:54 PM

camarols1

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The Patriot "Extreme" duals have about the most pressure for a 1.300 diameter that I've seen.
You will likely have to machine the heads to accept larger OD springs which will open the door to many other spring options.

Oct 2, 2008 | 06:31 PM

Beaflag VonRathburg

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Cutting the spring pockets for larger springs isn't expensive either. It should cost around $50-62.

Oct 3, 2008 | 02:13 PM

camaroandreas

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Quote:

Originally Posted by camarols1

Isn´t the prc kit the same as patriot extreme?
If not, do you know the seat pressure prc kit have?

Oct 3, 2008 | 04:57 PM

chriswtx

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patriot extreme's are 160lbs on the seat at of seat pressure at 1.8" installed hight. I have mine shimmed to 180lbs on the seat. I believe the PRC's are 140 or 145LBS of seat pressure at 1.8" installed hight.

Oct 3, 2008 | 05:02 PM

camaroandreas

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Thanks, i will get them and shim to 180 me to.

Oct 3, 2008 | 05:11 PM

chriswtx

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seems most here are running 180-200lbs of seat pressure with big boost..It also depends on you cam lobe design and how large(heavy) your valves are as well..

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Oct 3, 2008 | 09:39 PM

NA$TY-TA

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From: San Antonio, TX

I can tell u the Patriot springs had a better seat and open preassure then the Comp 921's.... tested by two different shops who didnt even know the brands.

higher seat preassure and valve control is why most go solid roller and lighter valves....