Need help picking fuel pump
Thread Starter
Burning Brakes
Joined: Oct 2000
Posts: 878
Likes: 60
From: Minneapolis, MN USA
Need help picking fuel pump
Hi - Finally drove my car yesterday for the first time in ~5 years. Woke up today to a significant fuel pump leak, so I guess I need to replace it. I need help picking the right one.
My car is a 1970 350/350. Previous owner put a Holley carb on it. The current fuel pump appears to only have 2 lines (gas in from the tank and gas out to the carb). There is another line (that I believe is a fuel return line) that is right next to the fuel supply line, but it is plugged and not used.
In looking for a new fuel pump, it appears there are two choices. One for Holley carbs (only 2 lines) and one for Qjet carbs (3 lines, presuming one is for fuel return)?
I hope to put the original Qjet carb back on the car in a year or so. Can I/should I buy the 3-line fuel pump and use it with the holley carb? Can I just connect that fuel return line that is currently plugged? Or will that cause issues with the carb for some reason? Or am I forced to buy the 2-line pump to use with the Holley carb this summer, and then if/when I go back to the Qjet, I need to change the fuel pump to the 3-line version?
Any help/suggestion would be appreciated!
My car is a 1970 350/350. Previous owner put a Holley carb on it. The current fuel pump appears to only have 2 lines (gas in from the tank and gas out to the carb). There is another line (that I believe is a fuel return line) that is right next to the fuel supply line, but it is plugged and not used.
In looking for a new fuel pump, it appears there are two choices. One for Holley carbs (only 2 lines) and one for Qjet carbs (3 lines, presuming one is for fuel return)?
I hope to put the original Qjet carb back on the car in a year or so. Can I/should I buy the 3-line fuel pump and use it with the holley carb? Can I just connect that fuel return line that is currently plugged? Or will that cause issues with the carb for some reason? Or am I forced to buy the 2-line pump to use with the Holley carb this summer, and then if/when I go back to the Qjet, I need to change the fuel pump to the 3-line version?
Any help/suggestion would be appreciated!
Safety Car
Joined: Apr 2006
Posts: 4,057
Likes: 421
From: BC
Hi - Finally drove my car yesterday for the first time in ~5 years. Woke up today to a significant fuel pump leak, so I guess I need to replace it. I need help picking the right one.
My car is a 1970 350/350. Previous owner put a Holley carb on it. The current fuel pump appears to only have 2 lines (gas in from the tank and gas out to the carb). There is another line (that I believe is a fuel return line) that is right next to the fuel supply line, but it is plugged and not used.
In looking for a new fuel pump, it appears there are two choices. One for Holley carbs (only 2 lines) and one for Qjet carbs (3 lines, presuming one is for fuel return)?
I hope to put the original Qjet carb back on the car in a year or so. Can I/should I buy the 3-line fuel pump and use it with the holley carb? Can I just connect that fuel return line that is currently plugged? Or will that cause issues with the carb for some reason? Or am I forced to buy the 2-line pump to use with the Holley carb this summer, and then if/when I go back to the Qjet, I need to change the fuel pump to the 3-line version?
Any help/suggestion would be appreciated!
My car is a 1970 350/350. Previous owner put a Holley carb on it. The current fuel pump appears to only have 2 lines (gas in from the tank and gas out to the carb). There is another line (that I believe is a fuel return line) that is right next to the fuel supply line, but it is plugged and not used.
In looking for a new fuel pump, it appears there are two choices. One for Holley carbs (only 2 lines) and one for Qjet carbs (3 lines, presuming one is for fuel return)?
I hope to put the original Qjet carb back on the car in a year or so. Can I/should I buy the 3-line fuel pump and use it with the holley carb? Can I just connect that fuel return line that is currently plugged? Or will that cause issues with the carb for some reason? Or am I forced to buy the 2-line pump to use with the Holley carb this summer, and then if/when I go back to the Qjet, I need to change the fuel pump to the 3-line version?
Any help/suggestion would be appreciated!
Melting Slicks
Joined: Nov 2010
Posts: 2,216
Likes: 113
From: Michigan
Both stock pumps I had put out about 9psi on the high end and with a holley you should regulate it down to like 5psi for street. You can change to aftermarket fuel pump and use a return style regulator, but I'd only do that if you need the GPH.
