Checked fuel float levels there good. Has a 37 pump nozzle. Ran fine with prior carb but the electric pump is new and I have an analog gauge connected to regulator at 6.5 psi when idling. Not sure what the fuel pressure is at 3/4 throttle but I do have an electric fuel press gauge I can bring in the cab, I will hook up and see. Its a good carter pump 100 gph type cant see it not able to keep up. It has a screen filter in the inlet I doubt that's a prob but I'll remove it. I will hook up a tach and see what the rpm is but it starts about 3/4 throttle and stumbles and has no more pull.