Fuel pressure dropping while driving and under acceleration to zero at idle runs 4 lb electric Blue

flathead31coupe said

Anything's possible? If that's what I have to do I can make a bracket or whatever it takes to do so All I need to do is have the gas going into the pump so it doesn't have to suck gas over and into it, correct?

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You will make it much easier for the pump to maintain pressure if you reduce any length/restriction on the suction side. As others have said, ideally the pump could be behind the tank and below it but not many would want the pump hanging low exposed to curbs/aprons/etc. So you mount it to try to reduce any uphills or bends or lengths wherever and however you can.

My avatar has a fuel cell sitting in the spare tire well and the rear exit of it travels to a large spin-on canister filter which then feeds the pump on the inside of the RH rail before the rear axle. So the pump still has to suck a bit but it's travel and length/restriction is minimized. Ideally you want "just enough" pump to cover the engine's appetite at 6 psi at WOT (for a carb) without having so much pump that at part throttle or idling the regulator is fighting to hold pressure down at 6 psi. This is where a return line would help...but there is no free lunch as circulating fuel only heats it up as it goes through the pump and then up to the engine bay and back. Simple physics. I suspect that Holley Blue pump is sufficient but only if it is not restricted on the inlet side. At least it's worth a chance to see!