I'd expect around 900 hp on race gas with that carb. Probably see peak power around 7000 rpm with the 1150 carb. Has the intake been ported or is it as cast? I know those are pretty good intakes as cast but porting will still help a bit. Not so sure on the torque, maybe 750 at 5500 rpm?

We've run a bunch of engines that size, with good heads, big cams, same compression, same size carbs on the dyno this year but nothing with that exact combo of parts. Everything similar we've run has been right around 900 hp at 7000 rpm.