Join Date: Mar 2016
Location: Lake Mary, Florida
Fuel pressure requirements
In my pursuit of converting my mechanical fuel pump over to an electric one, I've researched and found that the Eldelbrock performance carb requires 5.5 PSI (pounds per square inch). I have the fuel pressure regulator that will allow me to dial in this pressure, and with a good quality fuel pressure gauge, I can monitor this at the carb fuel inlet.
My issue is the electric fuel pump. I see some rated in the ranges of 72 to 130 GPH (gallons per hour), and PSI ratings of 5-7 PSI, or, Holley has a "Mighty Mite" that is rated at 32 GPH and 4-7 PSI. No issues with the PSI, but what about the gallons per hour rating? My engine is a basic V8, no hop up parts other than headers and An Edelbrock intake and their performance carb.
It would seem the 32 GPH fuel pump would match or even exceed what the stock mechanical fuel pump is capable of delivering. So, would I have a need to buy a more expensive pump that flows more GPH, or can the lower GPH pump work?
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