[TheJDMan]

The first thing I would do is run a compression test. You may need to borrow push rods from a neighboring cylinder to test #8. A push rod does not bend like that unless there is an underlying problem. As has been stated there is only one correct way to fix this and that will involve pulling the heads and doing some investigating. I would be looking at things like valve spring coil bind or rocker arm clearance issues and depending on the cam look at valve to piston clearance. Those heads don't appear to have guide plates which would help stabilize the valve train. You never stated if that engine is equipped with solid or hydraulic lifters. Let us know what you find.