Joe, that pump doesn't flow 80gph at 45-55psi of fuel pressure. It flows that as near 0psi like into an open bucket. Put a pressure regulator on it and the flow volume drops steatily until it's putting out like 10hp worth of fuel flow at like 100psi. I've tested a lot of fuel pumps myself and the walbro's are the loudest but they're the best intank pumps for high horsepower fuel flow.
I don't know what nitrous jet you need to use but I need to ask if you're using the external pump inline with the stock pump. If so, that's a big problem and will bring that "80gph" rating even lower.
This is why I say dual walbro intank pumps if you're using the stock tank. It'll be enough fuel for 1000+hp at EFI pressure.
Fuel cell? I hope so or at least a pipe and sock in the stock tank.
Call up NOS and ask them what jets you need. They'll know. I could calculate it but I don't want to be responsible for your engine
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__________________
, Jon
Owner of a Red Sled.
If it\'s EFI I can tune it. Specialize in 82-95 GM (yes Lt1\'s)
\"If you can leave black marks on a straight from the time you exit a corner till the time you brake for the next turn.......Then, you have enough horsepower\" - Mark Donohue
