BTW, I should clarify something. I'm running at the 600hp level with a built 462, and have run both a custom built 4150HP based 900cfm and currently a Pro-Systems Pro-Series 1000cfm built on a 4150HP base. I'm running 1/2" fuel supply, the 13205 regulator with a bleed orifice using 1/4" vent to the tank and the Poncho version of the RobbMC mechanical pump connected to a stock unsumped tank using the RobbMC A-body sending unit/pickup with 2 -8AN ports.
I can run the car down the straights at 6000rpm regardless of distance, and throw the car into hard bends, pretty much anything I want to do. Neither my fuel pressure nor my engine cares in the least. When the pedal goes down, the rpms go up. Period.
I think it's really important to sort out obvious inadequacies in fuel delivery before trying to troubleshoot performance issues by messing with different floats and/or jets.
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