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Old 03-03-2010, 08:19 PM   #1
kenm78
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1982 Fuel Pump.

I got a 1982 Chevy K10 4x4 dual fuel tanks that originally came with a 305. PO installed a 454 There are two fuel lines going to the fuel pump. Do each of these lines go to a different fuel tank or is one a supply and one a return??
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Old 03-03-2010, 10:59 PM   #2
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Re: 1982 Fuel Pump.

One should be the "in" or supply from the tanks and the other will be the "out" or supply to the carb.

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Old 03-03-2010, 11:43 PM   #3
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Re: 1982 Fuel Pump.

the threaded one goes to the carb. the larger of the 2 unthreaded one is the supply line from the tank(s) and the smaller one is a fuel return line.
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Old 03-04-2010, 12:16 AM   #4
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Re: 1982 Fuel Pump.

lurch115 is right. If you chase the lines back to the fuel selector valve you'll see that each tank has a supply and return line to and from it.
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Old 03-04-2010, 12:47 AM   #5
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Re: 1982 Fuel Pump.

Thanks for the correction. Its been a while since I've looked at a stock setup!
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Old 03-04-2010, 07:06 AM   #6
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Re: 1982 Fuel Pump.

Quote:
Originally Posted by lurch115 View Post
the threaded one goes to the carb. the larger of the 2 unthreaded one is the supply line from the tank(s) and the smaller one is a fuel return line.
I was thinking that but was unsure. I kept smelling fuel but couldn't find any leaks anywhere then last night I seen something dripping. Come to find out it was the smaller of the two un-threaded lines. Cut the bad end off and put a new clamp on. Hopefully I won't loose any more gas, the 454 drinks it fast enough as it is.
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Old 03-04-2010, 11:48 AM   #7
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Re: 1982 Fuel Pump.

IF you hook up the return line to a stock pump OR use a different lower plate for an aftermarket pump to get the opening for the return fitting. This little line will help on any fuel vaporization problems. I had a problem when I went to a different fuel pump and the reconnection of the return line helped me out quite a bit on vapor locking. It did not completely solve the problem, but a good share of it is now gone.
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