Not Ranked
Greg:
Directly from Comp Cams web site:
The 26915 and 26918 Valve Springs are specifically designed for the LS1 Chevrolet cylinder head and can be used as stock replacements or in performance applications all the way up to 0.625” lift and at engine speeds to 7500 RPM. Engineered to fit stock heads with no machining, utilizing the stock valve seat and spring retainer. This valve spring can also be used in all applications with the specifications list-ed.
Thats all, sorry.
__________________
Jeff
“If you can make black marks on a straight from the time you turn out of a corner until the braking point of the next turn, then you have enough horsepower.”
Mark Donahue
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