RYU

I looked today and I have the stock 5/16" hard line running through the frame rail. Do I need to upgrade to 3/8" for a bone stock LS1?

My in-tank fuel pump will be pushing about 100~ psi. I know if I was carbureted then i'd want to run 3/8" on anything over 300-350hp. I was hoping the higher line pressure still hold up under hard acceleration even with the small 5/16" line.

Anyone have any real-world experience on this?

ls1nova71

iTrader: (4)

100 psi????? Seriously, that's waaaaay too much! You're going to have to use a return line most likley from the filter/regulator, I'd use the 5/16 for the return and run a new 3/8 for the feed.

RYU

yes, you sound so surprised... 85-115 PSI at 50-60 gallons per hour is the rated output of my pump. i know the regulator/filter will take that down some, to what psi, I haven't researched.

i'm trying to avoid yet another mod which is what prompted my question.