5.3 Swap Fuel System Help
Thread Starter
Junior Member
Joined: Jan 2017
Posts: 9
Likes: 0
From: HarCo MD
Car: 1991 Camaro RS (WS6/Iroc Clone)
Engine: 5.3 LSX
Transmission: T56
Axle/Gears: 3:73 Richmond
5.3 Swap Fuel System Help
Hey everyone,
I am in the middle of trying to upgrade the fuel system in my 91 RS to support the 5.3 i am putting in. I bought a new sending unit for the 3rd gen tank and a walbro 400, which in retrospect is probably way to much for the slightly modified motor im putting in.
The new pump will require modification to work with the current sending unit I have. What are some recommendations on either getting a smaller pump or modifying the sending unit?
All advice is welcomed.
I am in the middle of trying to upgrade the fuel system in my 91 RS to support the 5.3 i am putting in. I bought a new sending unit for the 3rd gen tank and a walbro 400, which in retrospect is probably way to much for the slightly modified motor im putting in.
The new pump will require modification to work with the current sending unit I have. What are some recommendations on either getting a smaller pump or modifying the sending unit?
All advice is welcomed.
Joined: Mar 2000
Posts: 43,187
Likes: 43
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Re: 5.3 Swap Fuel System Help
Unless you're going wild with the 5.3, a Walbro 255 TPI replacement pump should do fine.
Thread Starter
Junior Member
Joined: Jan 2017
Posts: 9
Likes: 0
From: HarCo MD
Car: 1991 Camaro RS (WS6/Iroc Clone)
Engine: 5.3 LSX
Transmission: T56
Axle/Gears: 3:73 Richmond
Re: 5.3 Swap Fuel System Help
The motor has been fully rebuilt, ARP everything, forge internals, LS6 cam, injectors, springs, and I had them set the piston rings up to support boost. My goal is to get the car drivesble this year and put a twin turbo set up on it next year.
