Depending on RPM but it could go as high as a
1250... or a tunnel ram with 2 1050s for max
air flow... you can get enough fuel in.. its
always the air flow that lacks..
I saw 30 HP gain going from a single 1050 Dominator on a Indy 440-3 intake to two 1050 Dominators, one was the same carb, on a Indy dual 4500 tunnel ram intake
I was disappointed with those results
That motor made 775 HP with the single carb, intake and 1.5 inch Wilson manifold reversion spacer, it made 805 HP with the dual dominators, not sorted out though
I have good freind who ran a heads up NOS class out here on the west coast for years and years(20+), I encourage him to make as much power as he could N/A and then add as much NOS as needed to win the races, set low ET and MPH and qualify #1 so he got all the money he could earn at each race to help him on his racing expences. He did that for years after that and won the sereis championship in his class a bunch of years