- May 22, 2017
So I’m pulling the LS/4l80 combo from my 88 Cutlass supreme for another project and plan to put in a mild built 403 and turbo 400, and I’m in need of some small block Olds engine frame mounts. Messed up and sold mine when i got rid of the 455. Will big block mounts work with a 403? If not, does anyone have a set they want to sell?