[Alan Roehrich]

Jeff is correct. Any cam/lifter failure means the entire engine needs to come down, all the way to a bare block. The metal from that failure is in the oil, and everywhere oil went, that metal is present. The only way to remove all of it, and keep it from causing other failures, is to tear all the way down and clean it all completely. It will even embed itself into the piston skirts, and unless you get it all out of there, it will continue to ruin the cylinder wall finish, and a good set of rings will never seat or stay seated.

Competition Cams has an in house gas nitriding treatment, they get $100 to do a cam you buy from them.

We still run the three sets of Shubeck lifters we've had for a few years.

Some are having luck with the PPPC tool steel lifters, as well as the PRI lifters. Several have had problems with the DLC coating coming off. PRI prefers to have you send them your cam, they polish your cam until it looks like it has been chrome plated. It still requires a regular break in process.