About how much horsepower can a 60-1 go up to at the wheels realistically?

 

I don't know specifically, but I recently put one that had a .63 AR P Trim turbine housing on a turbo buick engine I built for a friend, and it made 463 RWHP at 17 psi conservatively tuned with 22 degrees timing and no knock retard on pump gas. There is probably another 100 HP in it with more boost and more agressive tuning / race gas as it was still reading only at 130 degrees IAT on the DirectScan.

I also ran one on my TTA a few years ago. It ran 122 in the quarter at 17 psi, but was never dyno'd.

I think Harry Hruska at Precision Turbo could tell you very accurately, but IMO it is good for 550 to 600 RWHP.

FWIW,
Roger

 

turbonetics 60-1 flows liek 55lbs/per minute on the map.