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Bob Mulry · 01-27-2016, 01:46 PM

Too hard for NHRA to check open pressure because all cam lifts are different..........

Set an installed height valve spring pressure limit of around 150 pounds....

Have NHRA buy an LSM valve spring testers to check installed pressure with the spring installed on the head and if the spring doesn't pass, remove it, measure installed height and use a RIMAC to confirm the pressure......

Looks pretty easy......

NHRA could even spot check the pressures....Only have to remove a valve cover...

Bob

01-27-2016, 01:46 PM	#75
Bob Mulry VIP Member Join Date: Apr 2002 Location: Coarsegold, CA Posts: 1,016 Likes: 57 Liked 320 Times in 102 Posts	Re: Roller Cams in Stock Eliminator? Too hard for NHRA to check open pressure because all cam lifts are different.......... Set an installed height valve spring pressure limit of around 150 pounds.... Have NHRA buy an LSM valve spring testers to check installed pressure with the spring installed on the head and if the spring doesn't pass, remove it, measure installed height and use a RIMAC to confirm the pressure...... Looks pretty easy...... NHRA could even spot check the pressures....Only have to remove a valve cover... Bob __________________ Bob Mulry 7516 STK A & M Motorsports