Rear end drain plug stuck, could i fill it through the vent?

[DarkknightGT]

Clean it with brake clean or acetone, take it to a shop and have them (carefully) weld a nut onto the plug but not to the housing. I think it'd be difficult for a weld to actually stick to that iron axle but you never know. Or weld a bolt to the plug and that might work better actually, the hex head facing out of course. That should stand it off enough for you to get a socket or wrench on it and twist it right off. It's probably a 3/8 npt plug. You can buy those anywhere online.

I actually went to a hex head for the next plug. I did find the matching threads on a gt350 forum and I actually had a plug in store. I was gonna see about freezing the old plug, smacking an oversized sacrificial hex head in there and backing it out like that. Or I'll just get my dad with a welder out to my place and have him weld it. I feel it'll be easier but I just wanted to see haha

 

[DarkknightGT]

I believe this is true, but, the OP already drained the oil and then found the stripped plug. So, all they need to do is replace the cover (that has a fill port) and then fill it.

I tried looking for one, that was one of my first ideas was to do that. Unfortunately 300$ is a little steep for my pocket book right now. All of those were custom made but summit may have something? I wasn't seeing anything though unfortunately

 

[DarkknightGT]

Why can't you just get another diff cover? Especially if you work at a parts store. Just asking.

Oreillys doesn't have as much aftermarket parts, we would have to special order it straight from the brand itself, not saying it's a bad thing, just a pain. Also didn't find any for the 7.5 differential unfortunately.

 

[Bronco2Fan]

I see quite a few, but none of them have drain plugs on them. You could always find one and drill and tap it, maybe.

https://lmr.com/item/LRS-403375CH/mustang-7-5-rear-differential-cover-chrome-79-10-yp-c1-f7-5

 

[weendoggy]

I see quite a few, but none of them have drain plugs on them. You could always find one and drill and tap it, maybe.

https://lmr.com/item/LRS-403375CH/mustang-7-5-rear-differential-cover-chrome-79-10-yp-c1-f7-5

That's just what I suggested, buy a pipe bung, drill hole, weld and be done with it.

 

[cobrajeff96]

Doesn't the Ford Racing cover have like everything?

 

[weendoggy]

I don't think they do for the 7.5, I missed that earlier.

 

[cobrajeff96]

An excuse to upgrade, just me.