[loggerhead]

I have a 455/462 with E-Heads and a XR276HR Comp cam w/Crane Energizer aluminum
full roller rockers. Rockers have about 20,000 miles on them. The other day I spun the motor up to between 5000 and 5500 RPM and subsequently started hearing a ticking noise as if a rocker was out of adjustment. Motor has never been past 5500 RPM. Upon
removing the valve covers, I found a bearing race from one of the rockers lying on the head. The inner wall of this bearing had blown out and the needles were everywhere.
Rocker itself looks like brand new. While I was looking around, I also found another problem. The pins that hold the roller on the tip of the rocker were backing out on about a half dozen or more rockers. Some had backed out to the point that the rollers
were hanging up to the touch. No signs of overheating or oil stavation at all.


1) Has anyone ever heard of this and if so, under what conditions?

2) I have been told by some not to use aluminum rockers on the street as they are
not designed for longevity. Is this accurate?

3) What rocker arm brand and style do you guys recommend? It is being suggested
that I go with crome molly rollers. Is this type offered in a full roller by anyone?

4) What do you guys think about Harland Sharp rollers if I should decide to stick with
aluminum?