dual pattern cams

[Dark Knight]

What heads are you running? Are you running guide plates? If they're the early heads with the pushrod slots and you're running guide plates, the might be binding the pushrods..

Also, check the clearance from the underside of the valve spring retainer to the top of the valve guide.

If the exhaust valves were hit hard enough to bend the pushrods, it would bend the valves too, I would think. Compression test would show it..

[woodsnake]

They are the stock heads that came on the motor. The machine shop billed me for milling them, but I am not sure how much he took off, and that could be part of the problem. THe first set of tubes that I bent were the comp cams 289/302 which were longer than the Edel recc ones. Since I installed the shorter tubes, the motor had been running fine, until this stupid roller crapped out. I have a replacement on the way, and when it gets here I will be able to determine if there was any other damage. I have NOT been hot rodding the motor, I have been trying to break it in nicely, so that I can dump the clutch later with a clear conscience. But, when or while, the roller was crapping out, I had a BAD knock going on. I don't know if a valve may have stuck, or WTF. I guess I'll just have to wait and see when the new roller shows up. By the way, it was a proform rocker. They are less expensive than most. I'm hoping this was a unique experience, and that the rest of them don't crap out later!