Originally Posted by cobalt327
Unfortunately, I have no first hand experience w/hydraulic lifter for use at 7K rpm.
But when I was researching this same thing a year ago, I had taken a hard look at the Lunati retro hydraulic roller lifters. They're designed to be compatible w/higher than normal spring pressure that's usually needed for elevated rpm use, so you might want to start there. Using the lightest possible valve train components will also help in general.
alright, thanks yeah I believe those lifters are around 700 bucks. But if its wroth it I guess why not spend it... ill check them out thanks for the info