Quote Originally Posted by Dave Severson
Thanks Erik, I keep looking at the hydraulic rollers....... Must be the geezer in me, but I'm still reluctant to run anything in my valve train that has hydraulic in the part name!!!!!!
There are a lot of varibiles but I.M.O. 6,500 rpm's about max. rpm.
After 6,500 I would go mech. roller.
There have been some Ford guys with beehive springs, hollow stem valves etc. hitting 7,000 rpms but it would make me nervous.