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75 Corvette rear Differntial fill plug size?

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Old Apr 7, 2016 | 09:34 PM
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Default 75 Corvette rear Differntial fill plug size?

If anyone can please help... I can't find anything. My car is in storage and I'm doing the fluid changes this weekend. Is the rear diff fill
Plug "from what I heard" 5/8 8 point socket? I found that it was pretty tough to find that socket. All that comes up is 12 points.... Any help would be great
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Old Apr 8, 2016 | 07:30 AM
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It's a square plug, so a 12 point socket will work. I can't remember the size though.
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Old Apr 8, 2016 | 07:39 AM
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Originally Posted by SH-60B
It's a square plug, so a 12 point socket will work. I can't remember the size though.
Okay thanks. And if it's a square head, why couldn't you use an open end wrench ?
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Old Apr 8, 2016 | 11:21 AM
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If it's too tight you will round off the plug head and then you really have a problem. I found my socket at Sears.
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Old Apr 8, 2016 | 02:16 PM
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Originally Posted by MelWff
If it's too tight you will round off the plug head and then you really have a problem. I found my socket at Sears.
What exact size socket
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Old Apr 8, 2016 | 03:15 PM
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I would recommend you crawl under the car with a short ruler and measure the distance across the flats of the plug since your plug maybe different than mine. Should be either 1/2" or 9/16".
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Old Apr 8, 2016 | 07:12 PM
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Originally Posted by MelWff
I would recommend you crawl under the car with a short ruler and measure the distance across the flats of the plug since your plug maybe different than mine. Should be either 1/2" or 9/16".
What point socket did you use
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Old Apr 8, 2016 | 07:37 PM
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My 76 has a 7/8 inch head on it
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Old Apr 8, 2016 | 09:35 PM
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Originally Posted by rdroket
My 76 has a 7/8 inch head on it
My 73 as well. A 7/8 inch crow foot wrench works perfectly.
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Old Apr 9, 2016 | 12:54 PM
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9/16 8 point craftsman socket for my 76
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Old Apr 11, 2016 | 11:08 AM
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Default socket

Originally Posted by Dom_vette75
What point socket did you use
8 point
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