Fuel Pump Decisions...

[US-1]

Looked up the GT500 fuel pump thread and got some good information. Seems to be a consensus that the KB Boost-A-Pump will be fine up to around 500 hp. Beyond that it looks like the GT500 pumps are needed until 650-700 hp? And.....after that looks like GT500 pumps and dual BAPs. Yes/No?

I'm getting the car ready for 450-500 hp and want to make sure I don't toast the stock shortblock before I get the "good one" ready. Car will be raced (yeah...no shit, right?) regularly at FFW races and might even be driven to/from each one. Pump gas 93 octane at all times. No race fuel. Boost will be no higher than 8 psi.

Right now I'm leaning towards the BAP for this season and work on going rounds with the stock engine setup. Suggestions?

 

[94tbird]

or you can go dual ford GT pumps. good for over 800rwhp

 

[GI Joe]

I'd put the GT 500 pumps in and be good for a long time without the BAP. That way you have the built in engineering....Then add the BAP when you need it. Several people ( big tuners) have told me that the ford GT supercar pumps are starting to show problems out of their native system. Problems tuning and problems putting out the proper fuel. In fact the numbers say that they only flow 10 lph more than the GT 500 pumps.(less than 5% more). The way they are making more power is that when they are installed it is required that you remove the check valve and "Y" and in doing so you free up a big restriction from the stock system. Interesting enough, for $40 you can buy the kit to do the same thing to the GT 500 pumps and WALAA...they miraculously flow bigger numbers...
There will be some that will disaggree here because a few have made good with them and no problems but I have it on good authority from at least 4 huge tuners ( big hitters) so thats good enough for me since I'm not a professional tuner.
GT 500 pumps yes. Wiring upgrade yes. BAP when needed yes. Line upgrade after that...

 

[94tbird]

PMP has a in house Fuel system utilizing Dual Ford GT pumps and Josh has been running it for over a year without issues. maybe its a quality control thing with the pumps, or with the people piecing together the fuel system

They take the feeds from each pump and feed a y block to one huge line. that line then goes to engine compartment and feeds a second y block where depending on stock or aftermarket fuel rails, will feed each fuel rail separately and/or utilize a crossover. from the y block in the engine bay, you can also tap fuel for nitrous if needed.

Lethal performance also sells a Dual Ford GT system and they include line upgrades and wiring upgrades and have sold quite a few with no reported issues either.

 

[cekim]

Interesting enough, for $40 you can buy the kit to do the same thing to the GT 500 pumps and WALAA...they miraculously flow bigger numbers...

Linky? Hint? Smack me over the head with an advertisement?

 

[Redfire]

From my experience the GT500 pumps with no wiring upgrade you are good to around 550 to 575 rwhp. I was in the low 90% range on pump duty cycle. I upgraded the wire and it gave me almost 10% duty cycle back.

The GT500 pumps with a single BAP and single FPDM has been good to around the 725 rwhp range. I run the BAP at 75% and on my most extreme race tune I see about 84% pump duty cycle at the very end of a run.

 

[ZmanM3]

I'd put the GT 500 pumps in and be good for a long time without the BAP. That way you have the built in engineering....Then add the BAP when you need it. Several people ( big tuners) have told me that the ford GT supercar pumps are starting to show problems out of their native system. Problems tuning and problems putting out the proper fuel. In fact the numbers say that they only flow 10 lph more than the GT 500 pumps.(less than 5% more). The way they are making more power is that when they are installed it is required that you remove the check valve and "Y" and in doing so you free up a big restriction from the stock system. Interesting enough, for $40 you can buy the kit to do the same thing to the GT 500 pumps and WALAA...they miraculously flow bigger numbers...
There will be some that will disaggree here because a few have made good with them and no problems but I have it on good authority from at least 4 huge tuners ( big hitters) so thats good enough for me since I'm not a professional tuner.
GT 500 pumps yes. Wiring upgrade yes. BAP when needed yes. Line upgrade after that...

Got anymore information on these problems?

 

[KILLER06GT]

If your going to need the gt500 pumps for the "good one" why not just spend the money now and not have to worry about fuel issues.

P.S. Ron every time I don't see your sig for a week and read it again I almost fall off my chair.

 

[94tbird]

If your going to need the gt500 pumps for the "good one" why not just spend the money now and not have to worry about fuel issues.

P.S. Ron every time I don't see your sig for a week and read it again I almost fall off my chair.

it still cracks me up too i love it

 

[US-1]

If your going to need the gt500 pumps for the "good one" why not just spend the money now and not have to worry about fuel issues.

Welllll.......here's the deal. The company I'm dealing with has this new power adder kit that is about to hit the market. They are looking at supplying the kit in one of three formats.
A. Use the stock pump and limit power to 450 hp.
B. Supply the kit with a BAP and limit power to 500 hp.
C. Supply the kit with the GT500 pump setup from FRPP and limit power to......whatever the end user thinks they're rods/pistons can handle.

I really want to suggest to them that they use the GT500 pump setup from FRPP and be on the safe side of life. Don't need buyers torching pistons then pissing about it all over the message boards.

Also, which wires are we talking about upgrading?

 

[GI Joe]

Got anymore information on these problems?

you can talk to adam@st or Kevin at wicked or Manny @ HP.
Kevin in several cases has seen he Ford GT pumps cause problems. I know alread there are many differering opinions on this...so to each their own...but the GT 500, then the dual BAP, then lines up grade and wire upgrade can make enough to break the block I beleive the GT 500 pumps flow 240 lph and FGT 250 lph. They work great in the F GT LOL

Lethal has the delete hose at their site and you can run 2 lines out of the hat instead of a "Y" and that too will help alot and then of course all the supporting mods to run the line forward.

 

[JimIII@JDM]

I don't toast the stock shortblock before I get the "good one" ready. Car will be raced (yeah...no shit, right?) regularly at FFW races and might even be driven to/from each one. Pump gas 93 octane at all times. No race fuel. Boost will be no higher than 8 psi.
?

Knowing that you dont want to have any hickups or problems at the track id go with the GT500 system. If Ford thought it was adequate to use a "add on" pump or boost a pump in the GT500's they would have.

JimIII

 

[cheftjpeck]

Knowing that you dont want to have any hickups or problems at the track id go with the GT500 system. If Ford thought it was adequate to use a "add on" pump or boost a pump in the GT500's they would have.

JimIII

I agree,...+1....that is one reason i am waiting to install my 3.4 pulley until after I plunk down that $$ for the GT500...I just wish it was less than 600...LOL.....good luck

 

[GI Joe]

Knowing that you dont want to have any hickups or problems at the track id go with the GT500 system. If Ford thought it was adequate to use a "add on" pump or boost a pump in the GT500's they would have.

JimIII

yup my thoughts too...he could add them to go further later WHEN needed if he wants to...but as I said earlier I too think the GT 500 is the way with the " built in engineering from ford" for THIS car....

 

[SteveP]

I am running the gt500 pump and its running great. Have a good fuel system at the motor will make it behave as well. Like 60's and some good rails. the gt500 pump should be more then you need. Thats one thing Shelby did right.

 

[94tbird]

yea but the thing is you cant just upgrade the stock pumps to a GT pump setup and do nothing else. thats where you'll run into problems.

You need to upgrade the electrical lines in the tank from the FPDM to the fuel hat and use a relay with heave ga wire to the FPDM and you donut need dual FPDM's. both PMP and lethals system run on one FPDM last i checked

im also going to question the flow numbers of a GT500 pump vs a supercar pump. if they were only 5gpm difference, they would be using one or the other in both the GT500 and the GT.

 

[ZmanM3]

yea but the thing is you cant just upgrade the stock pumps to a GT pump setup and do nothing else. thats where you'll run into problems.

You need to upgrade the electrical lines in the tank from the FPDM to the fuel hat and use a relay with heave ga wire to the FPDM and you donut need dual FPDM's. both PMP and lethals system run on one FPDM last i checked

im also going to question the flow numbers of a GT500 pump vs a supercar pump. if they were only 5gpm difference, they would be using one or the other in both the GT500 and the GT.

I thought that PMP's used 2 FPDM's. Their Dual GT Pump system does I'm pretty sure, as well as fuel rails.

 

[94tbird]

I thought that PMP's used 2 FPDM's. Their Dual GT Pump system does I'm pretty sure, as well as fuel rails.

new rails yes, but a single FPDM, similar to the Lethal system

 

[SONICBOOST]

I bought a GT500 dual pump kit for my Paxton. It's hands down the most reliable fuel pump setup out there. Going cheap initially could potentially lead to a big expense down the road.

 

[94tbird]

I bought a GT500 dual pump kit for my Paxton. It's hands down the most reliable fuel pump setup out there. Going cheap initially could potentially lead to a big expense down the road.

i ran my BAP setup form KB for 2 years without one fuel issue. is it the best method? no, but does it work? yes