The Lakewood scattershield does not work with a factory A-Body z-bar set-up, I found that out over 30 years ago. I had to find an Ansen scattershield that was specifically made for the A-Body. I assume you bought the repop Brewers z-bar, ball stud bracket, and spacer? All that stuff is 100% correct, it is the Lakewood that is designed for all other applications EXCEPT for an A-body big block.
The funny thing about science is that if you change one miniscule parameter you change the entire outcome to the way you want it.
