Fuel Pump
Thread Starter
Heel & Toe
Joined: Feb 2008
Posts: 24
Likes: 0
Fuel Pump
I am working on wakening up the engine on my 79 (intake, carb, headers) and would like to replace the fuel pump with a performance one and also dress up the engine . Most aftermarket pumps do not have the return line. Can I do away with stock pump and replace the gas cap with a vented cap??
thank you in advance for your help
AP
thank you in advance for your help
AP
Le Mans Master
Joined: May 2002
Posts: 5,086
Likes: 786
From: Lebanon Township New Jersey
I agree that the stock pump is not the prettiest, but they are, by far, your best option if you intend to drive the car. The return line will prevent vapor lock, the pump output does not require a regulator, and its capactity is adequate for 500 HP.
Race Director
Joined: Jul 2001
Posts: 15,892
Likes: 42
BK has outlined why downgrading to two line pump is not good from a functional point of view and how a shiny one is unnecessary and wasted money from a performance point of view.
The presence of 2 or 3 lines on a pump has no relationship to having a vented or non vented gas cap. The air entering the gas tank to replace the fuel used is routed by the charcoal canister in the drivers side wheel well.
The presence of 2 or 3 lines on a pump has no relationship to having a vented or non vented gas cap. The air entering the gas tank to replace the fuel used is routed by the charcoal canister in the drivers side wheel well.
Thread Starter
Heel & Toe
Joined: Feb 2008
Posts: 24
Likes: 0
Pump - Lights - Carb
I really appreciate everyones response, I just needed to understand the full function of the return line. I will keep the original pump.
As far as the lights, I believe it was a loose vacuum line
Can I get your imput on carb, I am replacing the intake with the Eldebrock performer - my thoughts were to use a Holley 600 cfm -
The original Qj was bad so I replaced it with a Qj that i took off a truck. Rebuild it myself and works extremely well, excellent response. I have both a Holley and a Qj on the workbench just need to decide which carb to use now. I appreciate any response.
AP
As far as the lights, I believe it was a loose vacuum line
Can I get your imput on carb, I am replacing the intake with the Eldebrock performer - my thoughts were to use a Holley 600 cfm -
The original Qj was bad so I replaced it with a Qj that i took off a truck. Rebuild it myself and works extremely well, excellent response. I have both a Holley and a Qj on the workbench just need to decide which carb to use now. I appreciate any response.
AP
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The Q-Jet has 750 cfm capability and flow determined by engine demand. Why dump all that for a puny Holley?
