BAD2000Z28

do I need Comp R lifters with these springs, or are stockers ok?

Tally TransAm

iTrader: (17)

stockers are fine

TVWilkes

No,you do not need the comp R lifters.

Dave00C5

iTrader: (4)

I agree, why spend the money when the stockers work fine.

dazman

what about when you have 150,000 miles on the motor???


mike

TVWilkes

Use the replacement lifters.

kumar75150

how much lift are these springs rated for?

TVWilkes

The springs are rated to .650 valve lift.

kumar75150

hmmm I'll do some more research but I might order these. I have close to 15k miles on my Isky 295Ds.

It between these, the Cranes, or the 921s.

TVWilkes

This spring has been used with cams as large as .638 valve lift with no problems.They are made out of the best materials possible.The manufacturing process is the same as pro stock drag springs.The springs are designed to last everyday with a .650 lift cam.They have 135lbs on the seat and 380lbs open.This is the best spring on the market IMO.