You never have to worry about a roller cam break-in....because there is none. You fire the engine and move on with your life.
The only thing you have to worry about with the solid roller stuff is the lifter life. Solid cams have lash and even with pressure fed solid roller lifters, their life is reduced due to the constant beating on the roller's bearings. On a street engine, I'll let them go (quality lifters) for about 7000 miles before doing an inspection. I do know of street engines that have over 10k miles on the same lifters. On race engines that see high rpms with rowdy cams, I'll pull them every 100 passes and do an inspection...as well as test the spring pressures.
Hydraulic rollers are really the sweethearts of the camshaft world. Great power, lots of different grinds to choose from, shove them in, fire the engine up and you're done for a very, very long time.
B2 Motorsports, LLC
This message has been edited by blykins from IP address 18.104.22.168 on Aug 25, 2011 7:24 PM