Differential plug bolt removal
Thread Starter
Racer
Joined: Nov 2005
Posts: 285
Likes: 88
From: Pennsylvania
2016 C3 of Year Finalist
Differential plug bolt removal
I need to add some posi fluid to my 1979's differential.
What tool/method is best to remove the square plug bolt on the side of the diff? I tried a regular wrench, to no avail; there's no room for leverage up there!
I was told by one supposed GM guy over the phone to get a 'crowfoot' socket end and use a 1 foot extension. He said there is no other way.
I can't find the 'crowfoot' socket end anywhere-Advance, Home Depot, Lowes-they've never heard of it!
Thanks a lot for any advice!
What tool/method is best to remove the square plug bolt on the side of the diff? I tried a regular wrench, to no avail; there's no room for leverage up there!
I was told by one supposed GM guy over the phone to get a 'crowfoot' socket end and use a 1 foot extension. He said there is no other way.
I can't find the 'crowfoot' socket end anywhere-Advance, Home Depot, Lowes-they've never heard of it!
Thanks a lot for any advice!
Team Owner
Joined: Aug 2006
Posts: 24,125
Likes: 15
From: Columbia Missouri
The people you spoke with, pardon me for being rude, are idiots.
You can get these at almost any Autozone, Oreilly, Napa, Harbor Freight, and similar stores.
Team Owner
Joined: Aug 2006
Posts: 24,125
Likes: 15
From: Columbia Missouri
Hey Gary, can you use a picture of a rear end with an arrow in the image to show the best place to drill and tap for a plug? I am going to do that this fall and I want to put it in the best place.
Thanks.
Tech Contributor
Joined: Aug 1999
Posts: 15,188
Likes: 4,010
From: Connecticut, USA
No thanks, I have files of photos on the diff so I should have the pictures already. I'm tapping one tonight in fact.
Team Owner
Joined: Aug 2006
Posts: 24,125
Likes: 15
From: Columbia Missouri
No, ha ha, I meant POST one so I can see, or get a good idea of where to put the plug. I could guess but I would like you to post a picture with an arrow pointing to the best spot. If you don't mind that is.
Melting Slicks
Joined: Nov 2001
Posts: 2,668
Likes: 43
From: Eastern US XX
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Tech Contributor
Joined: Aug 1999
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From: Connecticut, USA
I grind a flat pad 1" from the strut rod pad,centered.
If you go to my old diff thread, if it's still here, I pictured it. If not then I have it on DC and vettemod. Barry K also has them on his web page.
Here it is, surprised it's still here, I know some really like it when this shows up here.
http://forums.corvetteforum.com/show...t=differential
If you go to my old diff thread, if it's still here, I pictured it. If not then I have it on DC and vettemod. Barry K also has them on his web page.
Here it is, surprised it's still here, I know some really like it when this shows up here.
http://forums.corvetteforum.com/show...t=differential
Last edited by GTR1999; Aug 8, 2008 at 05:27 PM.
Race Director
Joined: Sep 2001
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From: Wellington, FL
St. Jude Donor '11 thru '25
Drifting
Joined: Apr 2008
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From: Lewisburg WV
thegazman
I purchased a kit to installed a drian plug in the differential of my 79 from the Corvette Clinic in Sanford Florida. Works well. I comes with a templet, drill, tap, and plug. DB...I'm sending you a PM.
Ken
Ken
Melting Slicks
Joined: Feb 2006
Posts: 2,092
Likes: 5
From: Fayetteville Arkansas
I need to add some posi fluid to my 1979's differential.
What tool/method is best to remove the square plug bolt on the side of the diff? I tried a regular wrench, to no avail; there's no room for leverage up there!
I was told by one supposed GM guy over the phone to get a 'crowfoot' socket end and use a 1 foot extension. He said there is no other way.
I can't find the 'crowfoot' socket end anywhere-Advance, Home Depot, Lowes-they've never heard of it!
Thanks a lot for any advice!
What tool/method is best to remove the square plug bolt on the side of the diff? I tried a regular wrench, to no avail; there's no room for leverage up there!
I was told by one supposed GM guy over the phone to get a 'crowfoot' socket end and use a 1 foot extension. He said there is no other way.
I can't find the 'crowfoot' socket end anywhere-Advance, Home Depot, Lowes-they've never heard of it!
Thanks a lot for any advice!
good luck... hope yours goes as easy as mine did...
Sully
Team Owner
Joined: Aug 2006
Posts: 24,125
Likes: 15
From: Columbia Missouri
Here's an old thread with pics. http://forums.corvetteforum.com/show...r+fluid+change
That's great. I still intend on drilling and tapping for an oil pan drain plug with a magnetic tip. I just want to make sure that the tip of the plug won't hit anything that moves, and I'll grind it flat so the nylon washer seals good to the case.
