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Fuel Pump Recommendation


lostcause

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I'm putting a 12v fuel pump on a 25 Hudson Super Six with the original carb and would like recommendations on which pump to use. NAPA sells one with a 2 psi output pressure. Will that work or should I go with a 4-5 psi unit? I don't want to overpower the float.

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The car has been previously modified to a 12v neg ground system and has the old vacuum tank style fuel system. The owner wants a reliable driver/Great Race type vehicle so the fuel delivery is being upgraded.

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If the car runs well, leave it alone. With proper use and understanding, the Vacuum fuel system is tuned for the intake abilities of the car and being gravity fed will not overpower and pressurize the carb. This pressurization causes leaks and those leaks drop down in the vicinity of the exhaust pipe. Needless to say, this is not a condition which helps with long term driveability. I have removed alll three electric fuel pumps from my 20's cars in the last few years. I had constant issues with overflow, vapor lock, dry pump from sitting and the embarassing and obvious sound of an electric pump whining away under the car.. Spent a couple hours rebuilding each stewart warner vacuum fuel tank and BAM! fuel problems fixed. Good luck with whatever you choose but gravity is the preferred method of fuel delivery to a stock 20s carb.

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