-10 feed with -6 return
 

I am currently building my car with a turbo 4.8 setup. This will not be my last set up in this chassis, it could very well go to 1000whp next time around. With that being said, I have been given a piece of -6 line long enough for a return line. A friend of mine will sell me a piece of -10 very cheap and he has the hose ends I can get too. I don't like building stuff twice and with what I have available will this work? I had planned on possibly reducing the -10 line to -8 with a reducer right before the rail. In theory this would make it a -8 feed but with higher volume right? Planning on running e85 and being in the 700whp right now. Any suggestions are welcome.

Do yourself a favor and go ahead with a -10 return or at least a minimum of -8. A restriction on the return side will cause psi issues.

Running a -10 and splitting it into -8 to feed each rail will be just fine. I actually did my vette that way.

I had considered that but that totally goes against why I would consider the -10 feed. Budget. Will reducing the -10 feed to -8 prior to the rail not effectively make it a -8 feed?

i run a 10 feed with stock feed as return, which is smaller than 6.

its more about your regulator, and fuel pump, how many, what speed, and when they come on :D

Pump will be a walbro485, regulator is an aeromotive a1000 (13101). -6 ports.

What size is the stock LS feed line anyway?? I figured it was 5/16 or -6. Had some -6 on my last fuel build and it looked like a pretty darn close match.

stock line ID is like -5 ish. when i measured like 8 years ago at the tight spots lol.

What will happen if you go to a -6 regulator? Won't that drop be too much