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Old Oct 24, 2003 | 12:55 AM
  #1  
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Default people over 550rwhp

Are you running the stock fuel pump? If not, what are you using?

I am around 480 on motor and about to spray a 150 shot and I dont think the stock fuel system is enough to support that power.
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Old Oct 24, 2003 | 01:41 AM
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Default Re: people over 550rwhp (kumar75150)

From the little info I could find, looks like the Racetronix fuel pump is whats recommended for 550+ rwhp.
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Old Oct 24, 2003 | 03:01 AM
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Default Re: people over 550rwhp (kumar75150)

well, i obviously dont have the need for one, but i must agree that you, on the other hand, probly DO! And being curious myself about this issue, heres a ttt for ya :cool:


[Modified by stngh8r, 8:02 AM 10/24/2003]
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Old Oct 24, 2003 | 09:57 AM
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Default Re: people over 550rwhp (kumar75150)

Yeah its a good idea get the new fuel pump. I leaned out on 150 shot and fried three plugs. When I got my cam put in they put in a new intank fuel pump. No problems since. I did go down to a 100 shot. Going to get the heads done next and forge the bottom end then back to 150 :D I might just stroke it while they are in there :hurray: ( Sorry but not sure which one it is) I do know that the stock 03' tanks are different 01-02 intank fuel pump install 2 hr job. 03' 6hrs :eek: Oh and buy the way I am just at 505rwhp for now :lol:


[Modified by Doczo6, 2:58 PM 10/24/2003]
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Old Oct 24, 2003 | 10:11 AM
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Default Re: people over 550rwhp (Doczo6)

Stock fuel pump here. :cheers:
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Old Oct 24, 2003 | 11:30 AM
  #6  
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Default Re: people over 550rwhp (NoMercy)

Stock fuel pump here. :cheers:
hmmm :hurray:
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Old Oct 24, 2003 | 02:14 PM
  #7  
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Default Re: people over 550rwhp (NoMercy)

Stock fuel pump here. :cheers:
Me too...
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Old Oct 24, 2003 | 02:45 PM
  #8  
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Default Re: people over 550rwhp (kumar75150)

Stock fuel pump, Aeromotive Pump, 42 lb injectors and Kenny Bell boost a pump here... and IT IS NOT ENOUGH!! :cry

Next week the Aeromotive pump and the 42lb injectors go BYE BYE!! :seeya

57 lb injectors and a Walbro pump are being installed! :smash: :thumbs:

That will take care of my fuel system in spades!! :flag

Dont be cheap when it comes to things like fuel systems, internal engine parts, clutches, brakes or things you dont see on your car... you will be very happy in the end.

VR :cheers:
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Old Oct 24, 2003 | 02:54 PM
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Default Re: people over 550rwhp (vetterdstr)

Lots of different "systems" use the Walbro 255 pump. Looks like the racetronix one is the most popular.
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Old Oct 24, 2003 | 02:54 PM
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Default Re: people over 550rwhp (vetterdstr)

Racetronix pump for the motor and a stand alone system for the nitrous. :seeya
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Old Oct 24, 2003 | 03:49 PM
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Default Re: people over 550rwhp (CHRIS NJ C5)

Racetronix pump for the motor and a stand alone system for the nitrous.
:withstupid: :thumbs:
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Old Oct 24, 2003 | 04:06 PM
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Default Re: people over 550rwhp (MattG)

I'm just at 570rwhp at 4300rpm on a Mustang Dyno in my Z28 and the RaceTronix system is done just around 4500rpm. And I still have almost 3000 more rpm to go. :D It makes it a little worse as it is a blower car (puts more load on the pump due to increased need for fuel) but I would think it is a very good system if you were around 550 or less. I'm not sure how much of a load the nitrous system puts on the fuel system. Personally if your going to put that much time and effort into building the motor up then replace it all and do it right the first time....what I should have done.


[Modified by 1LEThumper, 3:07 PM 10/24/2003]
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Old Oct 24, 2003 | 10:51 PM
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Default Re: people over 550rwhp (1LEThumper)

You can not compare your F-LT1 system to a LS1 C5 system for starters. They are not even closely related!!!

In all but the '97 C5 the fuel pressure regulator is at the back of the car.
Even if the pressure is stable there it can not compensate for the line drop to the front. You can do one of two things...
- Convert to a front return system (aftermarket parts or '97 C5 parts)
- Install a pump booster to compensate for the line drop which overwhelms the regulator/return system thereby bumping the pressure to compensate.

You are best to call Andy @ A&A as he can advise you on what is required as many of his C5 customers make 600RWHP+ all day long.

The Racetronix C5 system flows more than enough fuel to support over 600RWHP at 60PSI w/o the booster.


[Modified by Racetronix, 10:55 PM 10/24/2003]
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Old Oct 26, 2003 | 07:28 AM
  #14  
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Default Re: people over 550rwhp (Racetronix)

No probs with my racetronix and I have about all you can do to a 346!
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Old Oct 26, 2003 | 09:21 AM
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Default Re: people over 550rwhp (blown in n.c.)

I still have the stock fuel pump in mine and spray a 150 NX shot and have had no issues :thumbs:
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