Can I use a Walbro 255 fuel pump and a carbed LS1?
02-20-2011, 05:25 PM
#1
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Can I use a Walbro 255 fuel pump and a carbed LS1? I have a carburated LS1 in my chevelle. I do have a walbro 255 pump with the corvette filter/reg combo. Would that work with a carb set up? If not what fuel pump should I use?
02-20-2011, 07:01 PM
#5
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Well just trying to keep what I already have. Why spend the $ if i don't have to. Also trying avoid the noisy style pumps. Those holley's are loud. Don't have a race car.
02-20-2011, 07:03 PM
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02-20-2011, 07:05 PM
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02-20-2011, 07:47 PM
#8
An injected engine making the same HP as a carb'ed engine will use the same amount of fuel, so why would he have any pressure issues? His FI pump will need to return the same amount (of unused fuel) in a carb'ed application as it would in a FI app...
02-21-2011, 10:23 AM
#9
The corvette regulator will not work for this purpose. That is a high pressure regulator. You need something that can regulate pressures down to something that the carb can handle.
You need something like an Aeromotive 13204 with a big return/bypass.
I have one for sale with about 1 minute of use if you are interested. (It wouldn't work with my MUCH larger fuel pump so I had to switch regulator styles)
You need something like an Aeromotive 13204 with a big return/bypass.
I have one for sale with about 1 minute of use if you are interested. (It wouldn't work with my MUCH larger fuel pump so I had to switch regulator styles)
02-21-2011, 05:44 PM
#12
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I figured it wouldn't work. Just trying to save a buck. So what external pump should I use then? One that won't break the bank, but something quiet as well. Can't stand noisy pumps.. Thanks for all your help.
02-21-2011, 05:52 PM
#13
A Weldon a1100 is a great external pump - fairly quite, up to 1500hp support, low amperage requirements (fused at 20amp vs 30amp for most), no need for BAP/FP controller in street driving, can be mounted horizontal, vertical, above/below fuel tank.
Very flexible, but you need a return line from the regulator.
If you want a good pump that's good for around 700hp and can be dead-headed at the regulator then I'd say Holley 150gph BILLET pump. Do not buy the blue/red/colored holley pumps - they're junk. Also, this pump must be mounted below the fuel tank, otherwise you might run into problems.
Very flexible, but you need a return line from the regulator.
If you want a good pump that's good for around 700hp and can be dead-headed at the regulator then I'd say Holley 150gph BILLET pump. Do not buy the blue/red/colored holley pumps - they're junk. Also, this pump must be mounted below the fuel tank, otherwise you might run into problems.
02-21-2011, 06:40 PM
#15
Do a search. It's commonly done with no issues.
02-21-2011, 06:53 PM
#16
The corvette regulator will not work for this purpose. That is a high pressure regulator. You need something that can regulate pressures down to something that the carb can handle.
You need something like an Aeromotive 13204 with a big return/bypass.
I have one for sale with about 1 minute of use if you are interested. (It wouldn't work with my MUCH larger fuel pump so I had to switch regulator styles)
You need something like an Aeromotive 13204 with a big return/bypass.
I have one for sale with about 1 minute of use if you are interested. (It wouldn't work with my MUCH larger fuel pump so I had to switch regulator styles)
http://www.summitracing.com/search/?...12-803BP&dds=1
Your pump will be fine. Just use a bypass regulator as mention above.
02-21-2011, 08:58 PM
#18
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I really don't know where you think any stress would come from. If the regulator next to the carb is set to 6lbs, that is all the system will experience. No problem whatsoever and lots of people are doing it without issue.
There will be no high pressure if you use a low pressure return style regulator. Fuel injection vs carburetor does not determine Gallon Per Hour. Pressure is pressure. Volume is volume. The amount of horsepower the engine has determines the volume needs not whether it has fuel injection or not.
This is correct. Holley makes an inexpensive return style regulator for $70.
http://www.summitracing.com/search/?...12-803BP&dds=1
Your pump will be fine. Just use a bypass regulator as mention above.
There will be no high pressure if you use a low pressure return style regulator. Fuel injection vs carburetor does not determine Gallon Per Hour. Pressure is pressure. Volume is volume. The amount of horsepower the engine has determines the volume needs not whether it has fuel injection or not.
This is correct. Holley makes an inexpensive return style regulator for $70.
http://www.summitracing.com/search/?...12-803BP&dds=1
Your pump will be fine. Just use a bypass regulator as mention above.
02-22-2011, 01:12 AM
#20
I use the mallory on my 3rd gen w/ a 255 pump in the tank.
Don't use the holley regulator that everyone uses for carbs. It doesn't work right.
On my 3rd gen I found the right adapters to go from my factory fuel line to AN fittings. Hold on I think I have a pic.
