[oldbluef250]

Would I need bigger fuel lines or need to get a bigger tank selector valve for stage 2 injectors?

 

[bigjake0524]

Upgrading isn't going to hurt you at all. But for stage 2's it isn't really necessary.

 

[oldbluef250]

Ok thats good to know. How big are the lines that go to and from the tank? What about the lines in the valley that go to the fuel bowl and whatnot?

 

[speeddemon31176]

Feed line is 3/8" and return is 5/16" to and from tanks selector to the valley of the engine. The return lines off the heads to FPR are 5/16" IIRC and the feed line assembly from the fuel pump to heads are approx. 1/4-5/16" IIRC.

 

[oldbluef250]

I have another question about the electric fuel pump. Does it matter if it is mounted horizontally or vertically? I would like to do it vertically but I see everyone doing it horizontally.

 

[speeddemon31176]

Mount it horizontally. It was not designed to be mounted vertically.