Author Topic: Stock steel rocker arms and valve spring open pressure (Read 667 times)

e-chal · « **on:** November 17, 2010 - 10:58:25 PM »

what is the maximum full valve spring open pressure that can be used with the stock stamped steel rocker arms along with longevity and durability?

Moparal · « **Reply #1 on:** November 17, 2010 - 11:19:49 PM »

500 to 525 is about it. also they wont be at 1.5 ratio. they never are, so the actual lift would be less.

e-chal · « **Reply #2 on:** November 17, 2010 - 11:31:09 PM »

Thanks Moparal for quick reply. I was still wondering though what valve spring full open pressure could safely be used with the stock rockers.

Moparal · « **Reply #3 on:** November 17, 2010 - 11:53:15 PM »

a comp 924 spring for a 509 in a big block carries around 345 open just for a comparison

e-chal · « **Reply #4 on:** November 18, 2010 - 09:02:03 AM »

Thanks again Moparal for reply

nqkjw · « **Reply #5 on:** November 18, 2010 - 08:53:34 PM »

Quote from: Moparal on November 17, 2010 - 11:53:15 PM

a comp 924 spring for a 509 in a big block carries around 345 open just for a comparison

Crane 99838s seem similar to the above which i've used a lot in smallblocks and Aussie hemi sixes with stamped rockers and lifts in the 500-550 range no real problems.

Author Topic: Stock steel rocker arms and valve spring open pressure (Read 667 times)

e-chal

Stock steel rocker arms and valve spring open pressure

Moparal

Re: Stock steel rocker arms and valve spring open pressure

e-chal

Re: Stock steel rocker arms and valve spring open pressure

Moparal

Re: Stock steel rocker arms and valve spring open pressure

e-chal

Re: Stock steel rocker arms and valve spring open pressure

nqkjw

Re: Stock steel rocker arms and valve spring open pressure