Based peoples expierance not opion does the high temp jb weld stuff work seal off the holes.And whats a good cam to run with this set up.Can you use 4.0 cam in the 4.2 block?

Based peoples expierance not opion does the high temp jb weld stuff work seal off the holes.And whats a good cam to run with this set up.Can you use 4.0 cam in the 4.2 block?

These are almost becoming newb questions.

JB weld works, but get a machine shop to install a brass freeze plug first, then JB over top of it. Have them plane the JB flat.

The comp RV cam is great, so is the screamer 68-232-4

YES