High rpm miss

aaronk785 said

Went out and pulled some rockers. Sure enough one with butterfly pattern, and several with wear pattern off by 45 to 90 degrees. Wow springs didn't even last 200 miles on a cam with slow ramps should be easy on springs. Guess I know what I have to doo now. Must of got a bad batch. Thanks for all the advise.

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when you get it apart, look at the spring seats on the heads for digging in of the springs.
That will double verify the springs are bad or installed at the wrong height. Good seat pressure is very important as well as open, some people try and get away with the lightest spring they can be it fitment issues, less Machining of guides, trying to get the last quarter horsepower out of their engine... But when a valve hits a piston at high rpm it destroys an entire motor in most cases ...so it's just not worth it.imo

Solid or hydraulic cam?
Seat psi should have been 130-145 seat depending....figuring a 7 psi loss after break in which is typical of springs.. which is why you need to figure that in if you're looking to run then on the low end of spec'd pressure.
110lbs turns into 90 something real quick after some heat cycling.