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Old 04-16-2015, 02:34 PM   #1
no1udknow
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underbed tanks and carbureted engines...

Are any of you running an underbed tank with a carbureted motor? If so does the mechanical pump have enough umph to pull the fuel all the way from the rear or do I need to install an electric pump to take up the slack?

Thanks in advance,
Mike
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Old 04-16-2015, 03:06 PM   #2
Possmguts
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Re: underbed tanks and carbureted engines...

Why wouldnt it? Look at the old land yacht cars from the day....
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Old 04-16-2015, 03:15 PM   #3
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Re: underbed tanks and carbureted engines...

My '64 Caddy was mechanical & gas tank 18' away haha They can pull it on a truck just fine. You can run electric though if wanted or needed.
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Old 04-16-2015, 03:32 PM   #4
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Re: underbed tanks and carbureted engines...

My Suburban does....
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Old 04-16-2015, 04:27 PM   #5
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Re: underbed tanks and carbureted engines...

There's no reason a stock mechanical pump wouldn't work with an under bed tank. I've had bad luck with electric pumps, and would recommend using a mechanical pump for durability.
I can't remember the last time a car of mine quit and the problem wasn't the electric fuel pump...
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Old 04-16-2015, 05:05 PM   #6
leftybass209
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Re: underbed tanks and carbureted engines...

As everyone else has stated, MANY 50's cars up through introduction of electric fuel pumps have a fuel tank in the rear and a mechanical fuel pump and they're still kickin'!
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Old 04-16-2015, 05:08 PM   #7
71meangreenc10
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Re: underbed tanks and carbureted engines...

The same model Panel and Suburbans use the same pump as the trucks. I have moved my tank to the back oon my SWB and no issues.

Smitty
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Old 04-16-2015, 05:21 PM   #8
57taskforce
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Re: underbed tanks and carbureted engines...

These trucks had optional factory under bed aux tanks when new...of course it will work
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Old 04-16-2015, 09:49 PM   #9
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Re: underbed tanks and carbureted engines...

Just installed my new Boyd tank, all I did was hooked my hand vacuum pump and pulled fuel up to the fuel pump. Fired right up and works fine. 250 six cylinder with mechanical fuel pump. I ran 3/8" brake line for fuel line and reduced it down to 5/16" to the pump.
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Old 04-16-2015, 10:58 PM   #10
truckster
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Re: underbed tanks and carbureted engines...

All Blazers and Suburbans were set up that way. No problem getting gas up to the pump.
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Old 04-17-2015, 02:14 PM   #11
csfields
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Re: underbed tanks and carbureted engines...

I am running under bed aluminum fuel cell with Holley carb and Holley mechanical fuel pump. No problems whatsoever.
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