Hello, I am doing a LS1 swap into a 72 Chevelle. I have a -8 line for the feed fuel line from my original SB carb set up. My question is what size line will I need for a return? Also what external fuel pump & pressure regulator is everyone running. This will a be a fuel injection application. Thanks in advanced.

 

-6 should be good for the return if you are doing a return type setup...

 

Thanks

 

What is your setup and HP goals? Give me a call I have complete kits for LS swaps.

Nate