Can a mechanical fuel pump be too big?

[Grumpy]

What I mean is, can it be moving too much fuel? I know the formula for figuring out minimum fuel pump size, I know how to account for restrictions of fuel lines, fittings, etc. But say you're running a 150gph pump, when your engine only requires maybe a 80-110gph pump (again, correcting for restrictions). There's obviously a reason for the formula, or everyone would just throw the biggest pump on their engine they could, and never have to think about it, right?
What I want to know is can you put a mechanical fuel pump on an engine that moves too much fuel? I understand that running a regulator will limit pressure, but where does that excess fuel go that the pump is pushing? You either run a return line, or....... what? The pump pulls in and pushes out a set amount of fuel at a given RPM, right? All the regulator does is create a consistent flow restriction. So all that fuel has to go somewhere, doesn't it?
What's the scoop?

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https://www.knfilters.com/fuelfilter.htm

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low pressure electrical fuel pumps are available for carb applications
https://www.holley.com/products/fue...ed_fuel_pumps/carbureted_electric_fuel_pumps/

http://www.jegs.com/c/Fuel-Carbs-Intakes_Electric-Fuel-Pumps/10307/10002/-1

http://www.edelbrock.com/automotive/mc/fuel-pumps/

http://www.mechanicalcaveman.com/best-electric-pump-for-carburetor-fuel-pump-review/
keep in mind what a fuel pump is DESIGNED to do, and thats supply fuel VOLUME and PROVIDE A CONSISTENT FLOW RATE, PRESSURE is the RESULT of RESISTANT TO FLOW.
READING ALL the links below will provide a great deal of related info
but remember it will usually take a pump rated at 40%-50% larger flow to over come the restriction a fuel filter , and the fuel lines and fittings,remember a mechanical fuel pumps output varies with engine rpms, and the output is not directly related to rpms.
your not going to see 5 times the flow at 5000rpm that you see at 1000 rpm simply because the time available, for each mechanical pump stroke has been reduced by 80%
fuel line size fuel filters and fittings can restrict flow, and its very common for fuel filters over a year old to add significant restriction to fuel flow rates
EXAMPLE

if your engine requires 50 GPH your going to NEED a 75- 80 gph fuel pump and the correct matching line sizes to supply a carburetor
a properly set up fuel system will have a return style fuel pressure regulator and will constantly be allowing the fuel not being required by the engine to bye-pass back to the fuel tank.

read the links
http://garage.grumpysperformance.com/index.php?threads/setting-up-your-fuel-system.211/

http://garage.grumpysperformance.co...ts-inside-a-manual-fuel-pump.5365/#post-16067

http://garage.grumpysperformance.co...te-not-getting-fuel-to-carb.11668/#post-54616

http://garage.grumpysperformance.co...ed-flow-and-its-limitations.11100/#post-49467

http://garage.grumpysperformance.co...te-not-getting-fuel-to-carb.11668/#post-54616

http://garage.grumpysperformance.co...-big-a-fuel-pump-do-you-need.1939/#post-46020

http://garage.grumpysperformance.com/index.php?threads/fuel-pressure-inconsistant.10401/#post-43251