Thread: Fuel pump

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I need a fuel pump primer -- not what pump to get, but what's important & what's hype so i can do some research & make an informed decision...

Motor is a carburated 302, ~350hp (Ford Crate speced @ 345hp)
I need an electric pump (using Vintage Air's front runner set-up which doesn't support a mechanical pump)

How do i determine the flow rate I need. I'm guessing there's a formula or conventional wisdom that will guide that.

Same for fuel pressure -- what pressure am i after & why.

Is there benefit to having a seperate pressure regulator in an application like this? If so, what is it/why is it a good idea?

What about other things like design -- are some more reliable than others? Quieter or noisier? What else do i want to know about?

Thanks,
Rob

About 6 psi and 100 -120 gph should be more then sufficient for a mild engine, unless you are going to do some serious racing. The lower priced Holley electric pump is a good one, not terribly noisy if it is mounted with rubber shocks. An inline regulator is nice, with a gauge it allows you to dial in your pressure. Probably not required for this application.

Originally Posted by Dave Severson

About 6 psi and 100 -120 gph should be more then sufficient for a mild engine, unless you are going to do some serious racing. The lower priced Holley electric pump is a good one, not terribly noisy if it is mounted with rubber shocks. An inline regulator is nice, with a gauge it allows you to dial in your pressure. Probably not required for this application.

The Holley runs very nicely, as I have used them often - and you don't need a regulator unless you like the look. Summit's current price is about $96 + $10 for shipping. I had planned on using one but decided that a standard mechanical pump was better for my application. Unfortunately on Ford 5.0L crate motors you do have to change a lot of parts to use a mechanical pump - so I have a brand new Holley pump as a surplus part .

Like the gents said. And I believe Holley has a blue pump, red pump, and black pump. If it's set at 6 psi you dont's need a regulator. The black pump is set at 14 psi and you must use a regulator. Check the pressure setting before you buy.

IMO the best way to go is with a 14 psi pump and a bypass regulator with return to tank. This will radically reduce the chance and onset of vapor lock.

Kitz