Hey Guys, hope you can help. I have a SBC that has a GM 671 blower with two 600 Holleys on top, this car is made for the street only. I would like to run a mechanical fuel pump. Can you guys recommend a pump and how many gph & psi I should get. Thanks in advance..
On a similar setup I used a fuel regulator. set at 7 lbs. This was with 2-650 Holleys. Have always used electric fuel pumps mounted close to the tank. Bob
Holleys will be good with 7 psi. The gph kind of depends on how much power it makes, but 110 should cover it. An electric pump mounted in back, below the fuel level, pushes fuel to the engine...a mechanical pump mounted up front creates a vacuum in the fuel line, and relies on atmospheric pressure to push the fuel forward. If the line from tank to pump is large enough, and away from heat sources, and not too long, it should work fine.
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