Need help locating 4-6psi fuel pump for 4.3 w/ 4bbl carb

[ShoalSurvivor]

I'm stumped! I cannot find a suitable replacement fuel pump with 4-6psi operating pressure!

My OEM fuel pump (861155-2) is operating at 9-10psi. (I don't know if it's always been this high). Carb is flooding. Carb supplier says max of 6.5 psi. Edelbrock also states max of 6.5 psi for their comparable 1409 model.

Aftermarket models cross referenced for this OEM fuel pump all list operating at 9-10psi. I cannot find any that list 4-6 psi operating range. the OEM Mercruiser part is $630 vs $50 and the operating pressure is not listed.

How is this possible? Are all these aftermarket low-pressure pumps being used to supply a different carb that handles 9-10 psi?

Questions: (To 4.3 4bbl carb owners):
1) what is your fuel pressure?
2) have you ever replaced your pump, and if so, what model?
3) what carb do you have?
4) have your replacement pumps ever caused flooding of your 4bbl carb?

Thanks all!

_____________

2000-ish Mercruiser 4.3L 225hp 4bbl Quicksilver repower SN: 90004747 (#807736R11 / 03252004)
Carter AFB-4.3L-Marine-Electric Remanufactured 4 Barrel Carburator
Alpha 1 Gen II - Transom: 0L517680 Drive: 0L192679 1.62 R (1.81R scratched on top) original drive may have been SN: L40356

 

[Scott Danforth]

spend $20 on a fuel regulator

 

[Bt Doctur]

Not unheard of but my mech pump was pushing 15psi whenever it wanted ,replaced with the Eaton electric pump and no more flooding issues. pressure for carbs should be no more than 6 psi

 

[ShoalSurvivor]

spend $20 on a fuel regulator

already on its way.
i just want To know why more people aren’t running into this problem with replacement pumps?
Are their 4bbl carbs more tolerant? a max of 6psi at the carb seems to be well established as a limit on the float/needle.

I can’t justify dropping $630 just to see if my OE pump is working to an unspecified pressure vs. common “aftermarket” pressure. And I can’t be the only one who has run into this problem.

 

[Scott06]

This is the one Rick Stephens used for his edlebrock https://www.amazon.com/gp/product/B0076D5NCO/ref=ppx_yo_dt_b_asin_title_o01_s01?ie=UTF8&psc=1

thread is here https://forums.iboats.com/threads/which-electric-fuel-pump-vortec-longblock.725512/#post-5500396

 

[Scott Danforth]

already on its way.
i just want To know why more people aren’t running into this problem with replacement pumps?
Are their 4bbl carbs more tolerant? a max of 6psi at the carb seems to be well established as a limit on the float/needle.

I can’t justify dropping $630 just to see if my OE pump is working to an unspecified pressure vs. common “aftermarket” pressure. And I can’t be the only one who has run into this problem.

The $70 Carter marine pump is not $630 until Mercruiser adds it's markup