Nwfjarhead

I'm in the process of swapping a 5.3 in place of the 4.3 in my 2000 rcsb. The fuel lines from the donor truck are no good and I'm looking for a solution. I was thinking about just running 6an lines instead of trying to source factory replacements. I know at some point soon I'll turbo the truck and I'll need to upgrade the factory stuff anyway so is there any reason not to go ahead and upgrade now? Can someone please help me get a list together of what I'll need to make this happen? Thanks in advance.

Nwfjarhead

Are these what I need to connect to the factory fuel rails?
https://www.briantooleyracing.com/ls...ing-54028.html

Jeebalow

iTrader: (3)

You can use those, but I would use the ones with threaded nuts instead if the plastic clips. A few people had those pop loose under pressure. Here's a link, it's the one that says threaded cap.

Fuel Injected - Adapter Fittings - Russell Performance Products

Nwfjarhead

Thanks I appreciate the link. Those will take care of the intake side but what about the tank end?

Jeebalow

iTrader: (3)

I have an AN flaring tool, so I cut the stock fittings off of the rigid lines coming from the tank and flared the tube for AN. Then I ran AN from there to the engine.

Nwfjarhead

Does anyone know of a option on the tank side other than cutting and flaring the lines?

Jeebalow

iTrader: (3)

So I used Google and found this.
https://www.performancetrucks.net/fo...system-535565/
There are course tons of results

brandon6.0

iTrader: (26)

I would use the same fittings u were gonna use for the intake side, for the fuel pump side. u need a 5/16 for the return and a 3/8 for feed. thin run all -6an line. Or add some tube adapters for use a short piece of -6 line. what ever works best for u.

Nwfjarhead

Thanks for the info. I wasn't sure if the tank side was the same.

ss4chad

iTrader: (19)

So are the connections from the pump a 5/16 return and 3/8 feed? I was going to run SS braided line from the pump to my FPR which has -8 inlet and -6 return.

Chad