What Size Fuel Line?

[GoFish]

I'm looking for feedback on what size fuel line to run on my Scamp build.

I've got a .030 over 360 with F.A.S.T. fuel injection (65 lb/hr injectors and 1300 cfm throttle body), and a Garrett T70 turbo. At full (15 lbs.) boost, we're estimating 600-625hp. I'll be running a Porsche 996 GT2 fuel pump.

I'm thinking 1/2" fuel line with a 3/8" return. My turbo guy thinks 3/8" fuel line is big enough, but he's used to working on ricers. Any thoughts?

 

[rumblefish360]

I'd do a 1/2 inch line. 3/8th can feed alot of power but I'd think I'd do the extra size to feed the top end.

 

[OHD]

10 with a return from the block off of 8. Anything smaller requires you to boost the fuel pressure way up to feed when WOT conditions occur. Regulate the fuel pump speed to slow the fuel down.