I have an 86 Iroc z that i swapped the motor in. It originally had a TPI 305 and i put a carbed 355 with some work done in it. I just got a N20 kit for it, i am prob going to run a 100 shot or a 150 shot on it nothing to big, but my question is about my fuel system, I just used the factory fuel line from the back and ran it into my carter mechanical fuel pump and that into my carb. Should i use the mechanical pump and just run it into a regulator and out of the regulator run one to my carb and other to my nitrous system, or should i run a dedicated electric pump from the tank. I am not exactly sure on how i would run the dedicated system. I know i have 3 lines to the front the fuel line, return line, and breather line. So if i ran a dedicated system how would i get fuel to the other pump? I would rather not use a small fuel cell in the engine bay due to everything already being crammed in. Thanks for any help you guys give me.

 

i personally do not like mechanical pumps on a nitrous motor. you can put a fuel cell fitting in the bottom of the tank and run a line from that.

 

I have heard of doing that but i have heard it is hard to do and i really just dont want to drop my tank. How do you do it just drop the tank out and put the fittings in or a sump?

 

you can pull the tank and drill a hole the size of the fitting slide it through and take the top off and reach in there and put the nut on it. or you can get a sump welded in it.

 

Install a small 3/4 or 1 gallon racing fuel cell under hood and use a Carter #P4594 pump
and holley regulator #12-802-1.
The pump's operating pressure is 7psi and has enough flow volume to feed 400hp. Regulate the pressure using the regulator and a pressure guage to 5-6psi *flowing* at the fuel solenoid. Use 3/8" fuel line and braided fuel hose to connect it all. Don't forget the inline fuel filter.
Be sure to prime the fuel side of the system so there is fuel available right at the plate the first time You use the system that day. (burp the fuel side) Be sure to set the pressure regulator while flowing fuel thru either the plate or a equivelent nitrous fuel "test jet", into a bucket. Once it's set up you're good to go unless you change the power level or want to tweek the fuel pressure.