Spring pressure limits for stock SBF Hyd. roller lifter

talon · Post by **talon** » Fri Aug 08, 2008 9:20 am

Good morning gents

If the engine is going to only see about 7200 max rpm and the intake valve weight is about 110 grams - what do you think the max spring pressure would be to run these stock Melling Roller lifters?

I think the cam will need a seat pressure of around 160 lbs and a spring rate of possibley of 360 lbs.

Jim

Bad95Gts · Post by **Bad95Gts** » Fri Aug 08, 2008 6:34 pm

Depending on the cam that looks good.
I usually run 180 closed.
The stock style lifters are known too break with much over 450 pounds of pressure and high rpms.