OK, please double check, but I'll throw this out there.....rajsid said:Putting new steel valve covers on my big block 502. It's hard to find chevy valve cover bolts locally. I went and picked up some grade-8 bolts from the local hardware store. It has the correct thread count.
Does the bolts for the valve covers have to be heat treated? Will the grader-8 bolts work?
How much should I torque down the valve covers. Im using steel valve covers with felpro rubber gasket.
1. the screws should be 1/4-20
2. Grade 8 not a problem, not needed, just not a problem
3. Hand tight and one revolution of the screw should do it.