52 Rat

iTrader: (4)

I am in the process of building the fuel system for my lq4 conversion. I have read about return-less fuel systems and got to wondering about my stock lq4 fuel system. The 2001 lq4 appears to have a fuel return but I wanted to be certain, see photo.

I am in the process of install a 86/87 Buick Grand National gas tank with a Walbro in tank pump. I have a Delco GN in-line fuel filter but read threads about Corvette filter/regulators. I will be using the stock OE lq4 intake, fuel rails, injectors, etc. So, stock lq4 with T56 six speed. So, do I have a return system?

Project GatTagO

iTrader: (7)

It is entirely possible, and highly likely given your pictures, that the truck engines in 2001 had a return line from the fuel rail.

Do you plan to keep the truck intake?

Andrew

52 Rat

iTrader: (4)

Yes, I will be keeping the truck intake.

G-Body

iTrader: (4)

Yep the 01 lq4 had a regulator on the fuel rail and the return line runs all the way from the fuel rail to the tank.

52 Rat

iTrader: (4)

Thanks for the reply.

garys 68

iTrader: (1)

The 01 truck had a return. Looking at the pics you can see the disk shaped regulator with the vacuum line on it. The large line by the brake reservoir is the feed, smaller one is the return.
I'm not sure what effect it would have capping off the return and running a returnless system with a corvette regulator. You might be better off using a later truck returnless rail or flex fuel stainless rail if you're going to do that.

wildcamaro

iTrader: (15)

Yea you got a return line on that lq4 intake

52 Rat

iTrader: (4)

I thought so but wanted to make certain. I purchased my AN adapters, feed and return lines. I'm going to use the return line. I hope to have the fuel system installed next week.