fuel pump upgrades
Instructor
Joined: Mar 2017
Posts: 239
Likes: 30
From: Columbus, GA
I've got an Aeromotive 340 paired with FAST fuel rails and FAST 60lbs injectors and it had enough fuel 502whp N/A and 700whp on spray in an LS2. If you have anymore questions just message me brotha and I'll try to help 
Thread Starter
Intermediate
Joined: Mar 2017
Posts: 48
Likes: 1
Melting Slicks
Joined: Jun 2006
Posts: 2,491
Likes: 261
From: Miami Florida
Walbro 450 in tank here using all factory fuel system except an external fuel pressure regulator with return line.
The Walbro 450 messed up the in-tank factory regulator in a few months so not wanting to lower tank again went the external route works for me.
Return using the schrader valve in fuel rail into a -6 line to regulator to tank.
https://www.aeromotiveinc.com/produc...***-regulator/
The Walbro 450 messed up the in-tank factory regulator in a few months so not wanting to lower tank again went the external route works for me.
Return using the schrader valve in fuel rail into a -6 line to regulator to tank.
https://www.aeromotiveinc.com/produc...***-regulator/
Le Mans Master
Joined: Jan 2009
Posts: 5,656
Likes: 112
From: ocean springs mississippi
Walbro 450 in tank here using all factory fuel system except an external fuel pressure regulator with return line.
The Walbro 450 messed up the in-tank factory regulator in a few months so not wanting to lower tank again went the external route works for me.
Return using the schrader valve in fuel rail into a -6 line to regulator to tank.
https://www.aeromotiveinc.com/produc...***-regulator/
The Walbro 450 messed up the in-tank factory regulator in a few months so not wanting to lower tank again went the external route works for me.
Return using the schrader valve in fuel rail into a -6 line to regulator to tank.
https://www.aeromotiveinc.com/produc...***-regulator/
Instructor
Joined: Mar 2017
Posts: 239
Likes: 30
From: Columbus, GA
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Le Mans Master
Joined: Jan 2009
Posts: 5,656
Likes: 112
From: ocean springs mississippi
Instructor
Joined: Mar 2017
Posts: 239
Likes: 30
From: Columbus, GA
The stock regulator is in the tank and people like to upgrade it to outside units but some people end up leaving it as an in-tank unit but swap it to a BMW regulator or some madness like that
Le Mans Master
Joined: Jan 2009
Posts: 5,656
Likes: 112
From: ocean springs mississippi
If it fails in tank...do you need to pull tanks again to install an external unit?
Melting Slicks
Joined: Jun 2006
Posts: 2,491
Likes: 261
From: Miami Florida
No need to go back into the tank when is time for an external regulator.
Don't have to do a return at same time it will work flowless for a while.
When going with the 450 Walbro the bottom of the bucket must be hack off in order to supply the pump capacity lay the strainer flat on the floor of the tank be sure to buy it with strainer included and must use a hose clamp on the neck connection to the pump other wise will spit the hose no matter how tight the hose goes in and tank will have to come out again.