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Old 04-16-2011, 11:55 AM   #1
makamer
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1972 Gas Tank Sending Unit

I've got an opportunity to purchase an NOS sending unit, number 6429115. However the parts book lists two. They also list a 6429117. Can anyone tell me the difference and what each is for?

We have a 1972 C10 with 350 and automatic and air.

Thanks

Last edited by makamer; 04-16-2011 at 12:43 PM. Reason: Clarity
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Old 04-16-2011, 08:13 PM   #2
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Re: 1972 Sending Unit

Anyone??
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Old 07-18-2011, 08:56 PM   #3
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Re: 1972 Sending Unit

anyone? I need this info as well. That is if it's the same for a 68...
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Last edited by m6z; 07-18-2011 at 09:01 PM.
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Old 07-19-2011, 09:47 AM   #4
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Re: 1972 Sending Unit

One is probably 3/8" and the other is 5/16".
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Old 07-19-2011, 05:07 PM   #5
Dave
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Smile Re: 1972 Gas Tank Sending Unit

Quote:
Originally Posted by makamer View Post
I've got an opportunity to purchase an NOS sending unit, number 6429115. However the parts book lists two. They also list a 6429117. Can anyone tell me the difference and what each is for?

We have a 1972 C10 with 350 and automatic and air.

Thanks
Here's the breakdown:

6429115 is for a '72 series 10-20 Suburban w/ a/t 350, 400 exc. 4/wd

6429117 is for a '72 10-30 Cab w/ a/t 350, 400

Hope this helps.
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Old 07-19-2011, 05:51 PM   #6
m6z
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Re: 1972 Gas Tank Sending Unit

Quote:
Originally Posted by Dave View Post
Here's the breakdown:

6429115 is for a '72 series 10-20 Suburban w/ a/t 350, 400 exc. 4/wd

6429117 is for a '72 10-30 Cab w/ a/t 350, 400

Hope this helps.
Great info. Do you know if its the same for all years? I'm looking for a sending unit for a 1968.
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Old 07-19-2011, 06:42 PM   #7
Dave
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Re: 1972 Gas Tank Sending Unit

Quote:
Originally Posted by m6z View Post
Great info. Do you know if its the same for all years? I'm looking for a sending unit for a 1968.
Sending units over the span of production of these trucks have differences.

You didn't mention if you have a truck or sub., w/ V-8 or inline 6. But here's the ones for the truck V-8's:

'68 series 10-30 Cab w/ 327, 396 and '69 all w/ 2bc 350 6428081

'69-'71 series 10-30 Cab w/4bc 350, 396, 400 6428361
Note: I think this one is the single pick-up 3/8" line

Hope this helps.

Last edited by Dave; 07-19-2011 at 08:13 PM.
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Old 07-19-2011, 07:23 PM   #8
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Re: 1972 Sending Unit

If the truck came from the factory with a 307 2 barrel carb they had the same sending unit as the 6 Cylinder up to year 69. That was the smaller fuel supply line 5/16 size I think. A simple brass fitting adapter fixes that. The older versions also have a small nut with an eyelet on the unit and the others had a simple push on elbow on the stem with no threads.
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