Like I said.......SHIMS! Under the cap...under the brg in a high-speed motor are a bad Idea
I had no idea that Chevy was dumb enough to used em that late.Figures 'Car Motor'truck!
You have modified the motor and nodoubt want to use the new found HP
Get a NON-SHIM motor!!!!!
Assemble it correctly.....measure-measure-measure!!!
And if you see an old guy in a 39 GMC don't try racing me....you will break it again!
