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dean brown

09-20-2005 08:31 AM

500 HP What valve springs to use?

I have a 1999 Formula Fastech with 500 HP motors. Have always heard that after a few hundred hours that valve springs start breaking. I'm pulling heads this winter, what is best springs to put back into motor. Any suggestions?

rmbuilder

09-20-2005 09:06 AM

Re: 500 HP What valve springs to use?

Dean,
The Crane replacement is Part # 99896. Depending on your lifters and installed ht. you can also use the Isky #8005/8205 (upgrade S/SP series) or the K-Motion 850 with good results.
Bob

JCPERF

09-20-2005 09:07 AM

Re: 500 HP What valve springs to use?

Quote:

Originally Posted by dean brown

What bob said and i have good luck with 929 CompCams too. :D

37Talon

09-23-2005 07:58 AM

Re: 500 HP What valve springs to use?

I have a 55 gallon drum of broken HP 500 valve springs....switched to Comp 929-16 haven't broken a single one!!

thunderusone

09-24-2005 12:55 AM

Re: 500 HP What valve springs to use?

Comp 929-16 no problems so far.

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