Fuel Pump Recommendation

Having gone down the belt driven route I cant help but think it would be much cheaper/easier to go electric. There are tons of electric pumps out there that would do just what you need them to. Aeromotive makes both and their electric pumps can be mounted in tank for longevity. I dont have much experience with electric carb pumps but I would imagine they dont heat up near as much as efi pumps seeing as they dont need to build near as much pressure.

My choice would be to use a 255lph pump for EFI and use a bypass regulator set at 8 psi or so. What is neat about the EFI pump is that you can put it inside the fuel tank to make it quiet. They also are designed to run for a LONG time and be reliable. Race pumps like Holley are noisy, not fuel cooled, and have a short street life. The reciruclating system using the EFI pump also keeps the fuel cooler so less likely to vapor lock.

I have used the Barry Grant BG400 they work well, the Magnafuel version also works very well, and is more sited for long periods ( street driving)
even the BG is ok, if you use a step down elec box.
With 600 + hp, I wonder if a 255 litre pump would be enough.
My street car which had 700 hp @ wheels ran 2 Bosch 044 pumps, it had a consumption at full noise of 8 litres per minute.

8 litres per minutes sounds like you were running a little rich. With 700 at the wheels you had about 900 at the crank. For this HP, you should only need about 350lph for a BSFC of .5. An NA engine would run BSFC of around 0.6 and would need less fuel. Each Bosch 044 is a 255lph at 70psi and 300lph at 0 psi. One alone should of almost been enough. One 255lph pump can easily support 650hp under boost or 750hp on an NA engine.

In either case, even if you need two 255lph pumps, you can buy two in tank pumps for $120 each. Much cheaper than those exotic pumps, much quieter, and they have OEM reliability. My Bosch pump has ran for 15 years and 50,000 miles with only a very coarse inlet screen. I have known several people have problems with the Aeromotive and similar Billet or race pumps.

By the way, The Walbro Gearoter pumps are quieter than the Bosch Vane pumps.

I suppose I just wanted to have a bit in reserve, Not overly keen on running on the limit. the pistons cost too much !!
Plus I am sure, and you have not mentioned it , the fuel line size has a lot to do with what the output REALLY is as opposed to the rated output.

quote:

Originally posted by Joules5:
Okay, so I'm busy tidying up the engine bay ready to drop the new engine in and trying to pull together all the additional parts I'll need now so I get all this up and running for Pahrump. The engine curently has a fuel pump block off plate and I'm not sure if there is an eccentric installed, so I'm assumning not and don't really have time nor inclination to pull the timing cover.

What is the recommendation for type of fuel pump other than mechanical eccentric driven. Is it best to go electric or belt driven? Has to supply fuel to a 1,000cfm carb, feeding a 620HP engine with a 7850 rpm redline

Seems like whatever pump you choose, if you try to go above 7 psi, you are going to overpower the needle and seat. They say the Robmac pump is the hot ticket. I am thinking about getting one for my car this year or maybe next year. I assume you are feeding this engine with 3/8" tubing and hose from the tank pickup to the carb.

I'm installing a Robb Performance also. Call them, very helpful. http://www.robbmcperformance.com/