What is the most lift anyone here has used in a BBC with hydraulic roller lifters running 68-7000 rpms?

imo if you want to run those rpm,s you need to go solid roller.i have used hyd roller cam with .680 lift but normally .650 is my limit.

if HR I would go short travel, but at the rpm I would also go solids...

Is it a billet cam? Depending on the lobe, lift and duration. I run solids on everything. Last hydraulic roller cams I used were 244/248-648/644 and ended up running tight lash solid rollers but they were billet cams. Engines loved them.

I don't know of any hyd roller lifters rated at 7000 rpms

Of course they can cause the Internet says so!!! Kidding. I've only heard of people running hyd that high however have no first hand experience with. """""""""Solids""""""""""

It seems there are claims of being able to run those rpm's, but I have not yet been able to get confirmation or the amount of lift. I currently run solids that are due for a change and just thought I'd see if I could find someone with first hand experience.

Thanks

You could probably run .400 lift at 7k all day long, so the question of how much lift you can get to do that is a good one. I'd think that you'd have the best luck with the Comp cams short travel units so give them a call and see what they're willing to warrantee up to.

Make sure these claims are from endurance....Not 1/8 and 1/4 mile people....unless that is what you are doing to.

High RPM Hydraulic Roller Lifters - Lunati Power... these will run high rpm without incident.. 7000 isn't unheard of.. open your wallet