fuel fitting ....

[006murder]

i have one of the fitting hooked up n what knot. but my question is i have the return fitting on,but i dont have the fuel line hooked up, so can some tell me what is the size of the the fitting..?

[006murder]

its on 91 silverado

[vortecyota]

Not completly sure what you are asking, but pressure line is 3/8" and return line is 5/16". Hope that's what you were asking.

[88stepside]

1991 TBI motors have fittings for supply and return that are metric, 16mm supply and 14mm return I believe.

[006murder]

i already have one of the hooked up, the bigger one is the one im having trouble with, so the bigger one be 16mm , cuz the smaller one 3/8s tube fitting fit it....is there an reducer fitting i can use? cuz im in a hurry to get it up and running...im moving here soon n its gotta be running so i can move it