Best Fuel Pump Advice for Newb...

AJ/FormS said

P4007040; [email protected]'s been serving well since 2004 .
I think that works out to 290liters per hour.And 80gph is 480 pounds of gasoline, per hour. Can you run a tank on that?
IDK, but at .5 pound per horsepower per hour, a 440hp engine only needs 220pounds/ hour,3.67 pounds per minute,.061 pound per second or .733 pound for a 12 second quarter mile, which works out to 94ounces.
Per mile that would be 2.9quarts, or .73gallon......... per mile. Ergo 1.36mpg.
But the pump is spec'd for double that and change.

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The p4007040 was a Carter M6270. Glad its worked for you. I used one for a long time. It can be troublesome when engine braking because of the high cutoff pressure. The 80 gph is the advertised free flow. In other words, pumping into a bucket. The 7 - 8 psi is the advertised cutoff pressure. In other words no flow allowed out, carb inlet valve shut.

I sent my M6270 to Ryan Brown in Canada along with some other pumps to be tested. Cutoff was 7.5 psi. Maximum flow at 4.5 psi was 70 gph @ 6000 rpm.
Graph of the flow vs rpm@ 4.5 psi about mid-page here: Mechanical Fuel Delivery for Mopar LA Engines