mid 600s-700 wheel. Depends on timing/air. What does a PT76GTS run out of steam at? Is that billet wheel?
we did my buddies 370, "boost cam", stock headed, s475 a2w setup a couple months ago. Made 710RWHP on 13psi. This is through a locked 4l80 and dana60 rear with 3.73 gear. It will make 709-710 pull after pull.
I think the s475 with cast wheel is close to running out of steam on us though
2000 Z28 Drag Car--02 z28 m6 stripper--