HELP 2300 solid lift jam nuts backing off.

[Ministock25]

Ok started running the solid lift head. Just changed the cam in it and put mouse traps. Ran it 2 laps in hotlaps and about 6 of the lifters backed all the way off. ... Ok so I thought I may have not snugged them good. So we set them again and I made SURE they were very tight. And 3 laps later same thing. I never had the problem with this head until now with a diferent cam and mousetraps.

[let-r-eat]

If valvetrain geometry is correct, you should remove mousetrap and clip and torque to 60 ft/lbs and double check lash. might take a few times adjusting to get them right. If they come lose then you almost certainly have valvespring/geometry issues.