TPI to carb
Thread Starter
Junior Member
Joined: Jun 2005
Posts: 60
Likes: 0
From: hickam afb
Car: 92 Z/28
Engine: 355ci. /only connecting rods stock
Transmission: TCI Streetfighter auto
Axle/Gears: stock 3.23 :(
TPI to carb
so i have no clue what to do w/ the return fuel line from the original TPI setup. it just pours out gas until i undo the gas cap and release the pressure. right now its just sitting open and obviously theres nowhere for it to go for the carb set-up....well, that i know of...any suggestions?
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Joined: Jun 2001
Posts: 920
Likes: 0
From: Saskatchewan
Car: 1986 Iroc
Engine: 454 Demon 850DP
Transmission: TH350, 3500 stall
Axle/Gears: 3.73
I used a Mallory 4309 return style regulate when I switched from TPI to carb. It cuts down the pressure for the carb and returns excess fuel to the tank.
You can find them on either Summit or Jegs sites.
You can find them on either Summit or Jegs sites.
Thread Starter
Junior Member
Joined: Jun 2005
Posts: 60
Likes: 0
From: hickam afb
Car: 92 Z/28
Engine: 355ci. /only connecting rods stock
Transmission: TCI Streetfighter auto
Axle/Gears: stock 3.23 :(
I forget what pressure regulator i have on there, but im pretty sure its a mallory. anyways, i have one inlet and 2 outlets on my regulator. obviously one of them goes to the carb...is the other one for the return line?
Senior Member

Joined: Jun 2001
Posts: 920
Likes: 0
From: Saskatchewan
Car: 1986 Iroc
Engine: 454 Demon 850DP
Transmission: TH350, 3500 stall
Axle/Gears: 3.73
Yes you have to use a return line to return the excess fuel to the tank. If you have the Mallory regulator the instructions should show you how to route the lines.
Thread Starter
Junior Member
Joined: Jun 2005
Posts: 60
Likes: 0
From: hickam afb
Car: 92 Z/28
Engine: 355ci. /only connecting rods stock
Transmission: TCI Streetfighter auto
Axle/Gears: stock 3.23 :(
sweet, thanks a bunch. this is my first experience w/ carbs so i dont know that much about them. eh, i'm learnin tho. anyways, tks again
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