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  #21 (permalink)  
Old 12-14-2004, 05:50 PM
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Cobra Make, Engine: Unique, 427SO, it runs
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Thanks much. Great picture, and fabulous cars.
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  #22 (permalink)  
Old 12-23-2004, 03:43 AM
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Cobra Make, Engine: ERA # 665, 390 (to start with) Toploader
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Default A suggestion

If your plug is stripped I'd get a craftsman bolt out kit like this one.

It should work in the confines of the suspension mount. I've used them to remove the dowel pins from the back of a block and they take a lot of abuse.

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  #23 (permalink)  
Old 12-23-2004, 06:53 AM
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Cobra Make, Engine: ERA #684, 428 FE, TKO600
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Thanks for all the input and advise.
Fortunately the head of the plug isnt stripped yet and I was able to find a 8 point socket. Ill try it this spring when I drain and refill the differential again. Since the plug head is a generous I still may have to go the easy-out route but Im keeping my fingers crossed that I wont have to. If I do have to go easy-out Ill pick up a replacement plug and machine the head to a true for future work.
This time I was able to suck the existing lube out with a fluid extractor and got (I think) almost all of it. It just would have been much easier if I could have gotten the plug out.
Also picked up a 9/16 8 point, which fits the TKO600 plugs, although I can get to those with a regular wrench.
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  #24 (permalink)  
Old 03-29-2018, 09:35 PM
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Cobra Make, Engine: ERA FIA, 396 Windsor Stroker (Formerly: Unique 427 powered by a 351W with mysterious innards)
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OK, I realize that I'm just a tad late with this (13 years or so) but I found a simple workaround for removing the square head drain plug. I replaced my diff fluid today and needed to pull the drain plug. I read this thread first and was aware of the issue with the square headed plug. Not having any 4 or 8 point sockets, I poked around in my drawer of half in drive sockets and discovered that you place a 19/32nds socket backwards on a 4' extension. This leaves you with a 1/2 inch drive square hole on either end. I clipped a long ratchet into one end and stuck the other on the square headed plug, which came out easily.

The trick is having the 19/32 socket. Hell, I had three in my little drawer of sockets. I can't find a full set of any normal sizes, but I had 3 of the crappy ones. BTW - I used the Moroso climbing gear lube and 2 bottles of GM additive, and a short test drive (5 miles) showed no clunking in the rear end. Fingers crossed...

The old saw says If you want a thing done right, do it yourself. The true statement is If you want it done your way, do it yourself. There are many flavors of right.
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