Fueling & Injection - what size fuel line

doing a lt1 swap into my 86 monte. i need to know what size fuel line i need to go with so that i can get a sump with the correct sizes. im looking to do about 400ish rwhp. thanks everybody

If you're going to run all new line and plan on big upgrades in the future, get the sump fitted with at least a 10AN fitting, if not a 12AN fitting. I think I'm going to run a 10AN line for the time being but also putting a 12AN fitting in the tank with a cap on it. That way I can easily drain gas out of the tank, and I can upgrade to the 12AN line if I ever need to and cap the 10AN line then :)

400HP you could get away with a -6 line after the pump but I would suggest a -8 line after the pump and a at least a -10 to go to the pump from the tank, I put a -12 line on mine from the tank to the pump and a -8 to the engine.

I had a 86 Grand Prix with 383 and Paxton supercharger - ended up running a 1/2" aluminum line for feed and 3/8" line for return. This engine was carbed so I ran an electric inline with boost referenced regulator. Never had any fuel starvation problems.

-Jay-

1/2 inch is the same as -8 line, -6 is 3/8

That's true - I just didn't want 30ft of braided SS hose running under my car - so I used the aluminum line for feed and stock steel feed line for return.

I've also debated running some 1/2" aluminum piping. Its priced VERY reasonably. How easy is it to bend?

its not to bad to bend just dont expect to make a 3 inch turn with out kinking it, 6 inch is about the most I ever got to bend with out a kink