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Old 06-09-2010, 08:45 AM   #1 (permalink)
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1970 Impala Fuel tank sending unit

I have a big block 1970 Impala that has a fuel tank sending unit I need help with. I have never seen one that looks like this. It is a canister type with two lines running to it. Is this common on a big block? I need a replacement or need it rebuilt but in reality I would like to know more about what I have.

Thanks, Ken
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Old 06-17-2010, 09:14 PM   #2 (permalink)
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It's the stock sending unit. I just pulled one out of my tank last week.

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Old 07-29-2010, 11:45 AM   #3 (permalink)
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Just joined the site and saw your post. I just aquired a 1970 impala from my 99 yr old grandmother. It has less than 55k miles and has been garaged all its life with the last ten years just sitting there. The fuel guage has not worked in several years so I just replaced it. The problem is the replacement only has one line where as the original had two. I drove it for the first time after replacing it and after a few miles, the car started to hesitate. I plugged the small line because there's no where to connect it. I think that's why it is starting to hesitate? Can I tee this 1/4" line into the vapor line going to the tank?

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Old 07-16-2012, 07:21 PM   #4 (permalink)
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i just pulled off my gas tank and found a similar unit in my 70 4dr with a small block 400. only it has one line and doesnt have that bag thingy on the bottom....curious. i took it out because the gauge didn't work. its alot different than the ones various sites would lead me to believe i need for a replacement. rebuild sites or advice anyone?

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Old 07-16-2012, 08:50 PM   #5 (permalink)
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Velvet, That baggy thing is known as a sock, make sure you have one on when you get a replacement unit. It's pretty much the 1st line filter you have to protect everything else.

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Old 07-18-2012, 03:25 PM   #6 (permalink)
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yeah i thought it was supposed to have a sock filter. where did it go? did it dissolve? can i get a replacement sock? the sending unit is fine the float was a little tight though.

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