whats a good fuel pump for a 700hp lt-4 application? i figured out what i need for injectors, and FPR, but now i am trying to figure out what type of pump i should have. i have a stock one in the tank, and a vortech add on in line pump. will this be enough to feed 700hp? if not what should i get? this car is supercharged, and will be getting a rising rate FPR, and 65lb per hr injectors. i know the injectors are a little over kill, but i would rather have them working at a lower duty cycle, than having a smaller one working harder than it needs too.
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2000 WS6 T/A M6. Monster stage 3 clutch, flowmaster cat back, 4.10's, SLP lid, Hurst shifter.
1996 Mustang GT 5 speed STOCK DD
past rides:
1996 Mustang GTS bright tangerine orange
2003 Mach 1 azure blue drag car (10.90@118 record holder for fastest N/A mach)
1969 Mach 1 house of colors candy apple red393 stroker 100 shot (10.829@125 in street trim)
2003 Mach 1 Torched red FRPP aluminator/vortech 666RWHP
2008 Mustang GT JDM stroker long block, Saleen 2.3 twin screw
1980 Mustang L 13.7: 418 stroker
1994 Z28 A4 rebuilt from wreck
1994 Z28 A4 totaled -
700 at the crank or wheels? If it is at the crank, the general rule of thumb in gallons/hour required is 10% of your estimated crank HP. So at 700 HP, you will need a minimum of 70 GPH from the pump. This is in excess of 265 lph.
Barry Grant, Magnaflow, and BBK make very good in-line fuel pumps. But if you are looking for a replacement in-tank pump, Racetronix, Walbro, Holley, Accel, and Bosch make good products.
You will need to at least replace or remove the in-tank pump. The Vortech in-line pump can only draw as much fuel as the stock in-tank pump can provide. So no matter what the flow capacity of the Vortech in-line pump is, you will have a bottleneck at the stock in-tank pump.
Which Vortech pump is it? T-rex 155 lph? How much boost?
At 700 HP on a boosted motor you will need to use at least 2 155 lph in tank pumps. Or just remove the stock in-tank pump and use a single in-line pump capable of at least 270 lph. But like I said above you would be much better off by going with something like a twin 155 lph setup. -
thanks, so where is the best place to find a good dual in tank pump setup? and what are you familiar with?2000 WS6 T/A M6. Monster stage 3 clutch, flowmaster cat back, 4.10's, SLP lid, Hurst shifter.
1996 Mustang GT 5 speed STOCK DD
past rides:
1996 Mustang GTS bright tangerine orange
2003 Mach 1 azure blue drag car (10.90@118 record holder for fastest N/A mach)
1969 Mach 1 house of colors candy apple red393 stroker 100 shot (10.829@125 in street trim)
2003 Mach 1 Torched red FRPP aluminator/vortech 666RWHP
2008 Mustang GT JDM stroker long block, Saleen 2.3 twin screw
1980 Mustang L 13.7: 418 stroker
1994 Z28 A4 rebuilt from wreck
1994 Z28 A4 totaledComment
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Lots of f-body guys have been successful with the twin Walbro 340 in-tank setup. It would be a little overkill with 700 HP but you and I both know that a little extra insurance with fuel delivery on a boosted motor is a good thing.
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