190 or 255 gph walbro?
05-11-2004, 12:13 PM
#1
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Car: 91 firebird,mint
Engine: 305 tbi,lots of work done
Transmission: 700-r4 built by level 10 in nj
Axle/Gears: 3.73, auburn , precision
190 or 255 gph walbro?
for 91 bird, 305 tbi, 150 shot of juice by time motor is finished, which pump would be appropriate?
05-12-2004, 10:48 AM
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Car: 91 firebird,mint
Engine: 305 tbi,lots of work done
Transmission: 700-r4 built by level 10 in nj
Axle/Gears: 3.73, auburn , precision
come on guys its a one word answer
05-12-2004, 10:58 AM
#3
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Aren't both of thse high pressure pumps? (like 60+psi)
But if not and both are correct pressure for the TBI setup, then use the bigger one.
But if not and both are correct pressure for the TBI setup, then use the bigger one.
05-12-2004, 01:36 PM
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Car: 91 firebird,mint
Engine: 305 tbi,lots of work done
Transmission: 700-r4 built by level 10 in nj
Axle/Gears: 3.73, auburn , precision
reason i ask is because i read that the return might not be able to handle the 255 , but i dont know for sure thats why i ask, as for pressures i dont know either ................
05-17-2004, 04:59 PM
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Car: 91 firebird,mint
Engine: 305 tbi,lots of work done
Transmission: 700-r4 built by level 10 in nj
Axle/Gears: 3.73, auburn , precision
i cant believe noone has knowledge to answer this question.....i dont thats why i asked it
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05-18-2004, 02:24 AM
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Car: 1997 Jeep Wrangler
Engine: 4.0L
Transmission: 5 speed
Axle/Gears: 8.8 rear, 4.56 gears, 4:1 transfer
Originally posted by 25THRSS
The 190 can handle like 600 hp, you could even go lower to a 155 which handles almost 500 hp, the 255 is absolute overkill with 800 hp capability.
The 190 can handle like 600 hp, you could even go lower to a 155 which handles almost 500 hp, the 255 is absolute overkill with 800 hp capability.
05-18-2004, 10:19 PM
#10
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Originally posted by John Millican
That would be true if they were rated at operating pressures but they aren't. They are rated at 0 psi which is no back pressure. Once you install them in a EFI car and set the AFPR to 48 psi or so the rated flow drops. I am running the 255 since it's only $10 more then the 190. My 5/16" return works just fine.
That would be true if they were rated at operating pressures but they aren't. They are rated at 0 psi which is no back pressure. Once you install them in a EFI car and set the AFPR to 48 psi or so the rated flow drops. I am running the 255 since it's only $10 more then the 190. My 5/16" return works just fine.
05-19-2004, 01:40 AM
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Car: 1997 Jeep Wrangler
Engine: 4.0L
Transmission: 5 speed
Axle/Gears: 8.8 rear, 4.56 gears, 4:1 transfer
Originally posted by 25THRSS
it doesn't make a difference.
it doesn't make a difference.
Last edited by John Millican; 05-19-2004 at 08:57 AM.
05-19-2004, 01:43 AM
#12
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It's gonna pump 255gph regardless. Please explain how fuel pressure will have any effect on how many gallons the fuel pump can pump. 800 hp requires roughly the same amount of fuel no matter what psi you are operating at.
Last edited by 25THRSS; 05-19-2004 at 01:45 AM.
05-19-2004, 10:16 AM
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05-19-2004, 10:18 AM
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Car: Formula
Engine: 6.0 LSX
Transmission: 4L60E
Axle/Gears: 9 Bolt 3:27
I think you need a TBI pump personaly. I dont think the walbros are what you need. Liek the post above its way too much pressure. Thats why I "think"
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