Rhoads lifters are the pump up hydraulic lifters that increase effective lift at higher engine speeds when oil pressure increases. We used a couple of sets of them thirty years ago with mixed results.
The one set SEEMED to perform a little better at higher RPMs, but we never got to run actual tests at the track to confirm those results.
The other try wasn't successful. The engine either wouldn't idle properly with the valve lash set to specs, or it wouldn't rev because we opened up the valve lash to get it to idle.
LOOOONG time ago!! I don't know if the "technology" has improved or if they're even still around.
Last edited by Blackwater; 04/12/21 11:50 AM.
