Our 82 was a crossfire car converted to a carb'd ZZ4. We retained the factory electric in-tank pump. As far as I can tell, the mechanic dead-headed the system, doesn't look to be a return of any sort. It ran great as far as we could tell, was dyno-tuned with no problems, and ran strong (13.0 @ 98mph w/ stock ZZ4 and 1.6 rockers). It has been sitting for a couple years due to a wreck and being in the body shop, and also had some new engine mods right before it was wrecked, and was never properly tuned for them since it was wrecked like 3 days after the mods were complete.

Anyways, it now has Trick Flow heads, a fairly large hydraulic roller cam, and an NX wet nitrous system jetted for a 150 shot. We figure ~400-425 crank horsepower from the motor alone, plus another 150 from the nitrous system. Someone said that the stock 82 electric pump could handle this, I highly doubt it. I could see it supporting the motor alone, and has just fine in the little bit of driving we did with it, but what about the nitrous?

Does anyone have pressure and flowrates for the 82 pump?

Is there any in-tank option for feeding the motor and nitrous system? Don't really want to sump the tank and run an external electric pump, too loud and too much work. Not too keen on the idea of a mechanical fuel pump either, especially with a wet nitrous system. I know late model EFI cars would use like a Walbro in-tank pump that would support this, but I'm not sure that dialing down a 40psi pump to 6-8psi would be a good idea.