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Carb to EFI gas tanks

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Old 10-12-2009, 07:28 PM
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Default Carb to EFI gas tanks

Why dont people just use a gas tank out of a newer vehicle instead of spending the money on pumps and rigging it up?

Am I missing something. I would think it would be a cheaper and easier alternative?
Old 10-12-2009, 07:32 PM
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Some people do while others don't want to cut up their cars to install a gas tank that hangs down too low and looks out of place. The best bet would be to try and use a fuel pump module in a older tank. That would require installing a sump or something similar.
Old 10-12-2009, 07:40 PM
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that is an option but sometimes there are fitment issues that come with the newer tank. in my case my chevy '87 c-10 came with throttle body setup. its was easier to switch to a higher psi fuel pump which cost me $130.00. no measuring, cutting, or welding. cant get any cheaper /easier than that.
Old 10-12-2009, 08:11 PM
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i have a 1980 Trans Am. with a 21 gallon tank. I figure anything smaller should fit. so maybe im just thinking too car specific.

But I figured if i took a tank from, say, a fuel injected firebird, it should fit? Is there anything special about the gas neck? can i just cut a hole and make a new one? (fills up in the rear)
Old 10-12-2009, 08:19 PM
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Late model tanks tend to be thicker in the middle. If you are lucky enough to have a car in which they offered a fuel injection setup in later model years then you are set. In my case with the Chevelle I either have to cut a big hole in the trunk for the tank to stick up or use a fuel sump in the bottom. I bought a stock appearing spectra fuel injection tank with electric fuel pump for my chevelle with discount for $425 shipped to the house. Have yet to use it.
Old 10-13-2009, 05:50 PM
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why do people buy gas tanks period? I 've been running a stock tank with stock pickup and an external pump for 2 years now
Old 10-13-2009, 06:52 PM
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how much does an external pump setup cost?
Old 10-14-2009, 06:22 PM
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1OO for a good walbro pump and some hp fuel line.....
Old 10-14-2009, 06:31 PM
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When I had the Holley Commander MPFI on my Chevelle it would bog under hard acceleration/cornering with a external pump.
Old 10-20-2009, 06:33 PM
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Check out the gas tank for a 89-96 Caprice/Impalla. They have the fuel pump in the tank, fit between the leaf springs on a 1st gen F-body and the filler neck is at the rear. You'll have to cut you're trunk pan to make it fit. Or just get the trunk pan and tank as one piece from the junk yard. Worked for me on my 68 camaro project.
Old 10-20-2009, 11:46 PM
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Originally Posted by lsxmalibu
why do people buy gas tanks period? I 've been running a stock tank with stock pickup and an external pump for 2 years now
Depends on how you plan to use your car. For a frequent driver the external pumps are a lot noisier. Plus the internal pumps are cooled by being submersed in the fuel in the tank. With my internal pump, I don't even hear it when the car is running. For a race application, or if you don't mind the noise, the external pump seem to work fine. Especially for a drag car where the pump does not run for extended periods and have a chance to get hot.

Those are my thoughts

Pat



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