[Excaliber]

Schubeck Lifters, WOW, just did a Google thing and I am really impressed!!! Not only with their flat tappets but their unique roller tappets with NO ROLLER BEARINGS. Roller bearings in roller lifters are the fundamental problem.

Consider this from a write up on their flat tappets:

The Radius lifters are esentially a modified flat lifter and are based on the fact that, increasing the useable working face of flat lifter to utilize a faster acting and higher lift cam, will increase the engines performance. This increase in useable surface is achieved, without increasing the diameter,by arcing the flat surface into a radius. The results approach the performance achieved with a roller cam.
My my, I bet those babies cost a small fortune (and sound worth it too)! I'm checking it out for my next engine build, I might even consider solid rollers again! Thanks for the heads up Steve.