|
Fuel pressure?
#2650011
04/28/19 09:09 PM
04/28/19 09:09 PM
|
Joined: Feb 2009
Posts: 773 Crofton, Ky.
rattler
OP
super stock
|
OP
super stock
Joined: Feb 2009
Posts: 773
Crofton, Ky.
|
What fuel pressure does a 5.7 Hemi need? I need to buy a pump for my 64 wagon to 5.7 Hemi conversion. I can't mount an in-tank pump, so I'll have to mount one on the frame as close to the tank as possible. But, I need to know the pressure requirement before I order one. Thanks.
1957 Dodge truck, Snakeskin Green with a little stroker motor. 1964 Plymouth Savoy wagon ( my new project)
|
|
|
Re: Fuel pressure?
[Re: rattler]
#2650025
04/28/19 09:45 PM
04/28/19 09:45 PM
|
Joined: Nov 2004
Posts: 25,050 Texas
GoodysGotaCuda
5.7L Hemi, 6spd
|
5.7L Hemi, 6spd
Joined: Nov 2004
Posts: 25,050
Texas
|
I run ~58psi on my stock injectors.
Any chance you can clear an Aeromotive Phantom kit? We installed one on a plastic D100 tank, which has no aftermarket tank support and it works very well!
Most any ~200-340lph EFI pump will have no problem running the average V8. I'd do everything I could to avoid an external pump, however.
Last edited by GoodysGotaCuda; 04/28/19 09:45 PM.
|
|
|
Re: Fuel pressure?
[Re: GoodysGotaCuda]
#2650243
04/29/19 03:04 PM
04/29/19 03:04 PM
|
Joined: Nov 2006
Posts: 2,255 IL
furious70
top fuel
|
top fuel
Joined: Nov 2006
Posts: 2,255
IL
|
In a decade of EFI use I've run an external Walbro 255 and it's been just fine. On an all day drive it does get a little loud but never left me stranded. 43psi.
*edit* 43psi is for my classic FAST controlled 383, not for a Gen III, should have made that clear.
Last edited by furious70; 05/01/19 02:24 PM.
70 Sport Fury 68 Charger 69 Coronet 72 RR
|
|
|
Re: Fuel pressure?
[Re: GoodysGotaCuda]
#2650674
04/30/19 09:08 PM
04/30/19 09:08 PM
|
Joined: Feb 2009
Posts: 773 Crofton, Ky.
rattler
OP
super stock
|
OP
super stock
Joined: Feb 2009
Posts: 773
Crofton, Ky.
|
The station wagon is stood on edge in the driver side quarter panel. So, no, there just isn't any room.
1957 Dodge truck, Snakeskin Green with a little stroker motor. 1964 Plymouth Savoy wagon ( my new project)
|
|
|
Re: Fuel pressure?
[Re: challenger73400]
#2651032
05/01/19 08:07 PM
05/01/19 08:07 PM
|
Joined: Feb 2009
Posts: 773 Crofton, Ky.
rattler
OP
super stock
|
OP
super stock
Joined: Feb 2009
Posts: 773
Crofton, Ky.
|
I can't remember, is there a return line coming off the fuel rails? If not how did you route a return line?
1957 Dodge truck, Snakeskin Green with a little stroker motor. 1964 Plymouth Savoy wagon ( my new project)
|
|
|
Re: Fuel pressure?
[Re: rattler]
#2651074
05/01/19 10:30 PM
05/01/19 10:30 PM
|
Joined: Nov 2004
Posts: 25,050 Texas
GoodysGotaCuda
5.7L Hemi, 6spd
|
5.7L Hemi, 6spd
Joined: Nov 2004
Posts: 25,050
Texas
|
I can't remember, is there a return line coming off the fuel rails? If not how did you route a return line? Factory rails do not have a return fitting. It's not uncommon to run a regulator near the tank. That setup makes for some fluctuating fuel pressures, but it is at least consistent fluctuating that can be tuned to.
|
|
|
|
|
|