Hello, I built a new 360 last fall and it has around 500 miles on it. I have had a problem with what I thought was rocker arms backing off. I tighten this one and maybe a hundred miles later it will be loose again. I didn't do anything special when breaking it in since its a hydraulic roller cam. This rocker arm is screwed it alot more than the rest of the rockers. The 89 roller motor was a factory roller so I reused the factory lifters. The motor runs amazing between the ticking. Could the lifter just be compressing? I hope so! Could this have been my problem?Here are the specs.
RHS heads
Indy rockers 1.5
Comp big mother thumper roller
Crane retrofit pushrods