so i finally got around to pulling my diff, and what i thought was just stripped spider gears turned out to be worse. theres little cracks around where the cross pin sits on the side where the bolt goes in. there not big cracks. but they're there. my dad whose a mechanic from long ago told me its ok to drive but it could still grenade so drive it slow. is that true? i have to drive this ***** to college everyday soon, so i just need it to be daily drive-able until then.

 

That is a slow fuse on that grenade.
I would try and correct the problem while I had it tore down.
Replacing the piece now will be a lot cheaper than, not if but, when it fails.

 

I would replace it.
When it goes(and it will) it will be at the most inconvenient time possible. Then you'll be pissed that you didn't fix it wile it was apart.

 

X2 on this. Like boom half way there...

 

well, unfortunatley i dont have a steady job so i cant afford to fix it right now. i dont have access to the tools to do it either. just gonna have to live with the ticking time bomb for now

 

I agree that replacing it now would be a good time (speaking from experience, had the rear end of mine blowup merging onto the freeway) Check this out, the price may go up but its worth a try. FORD 8.8 POSI MUSTANG BRONCO 31 SPLINE | eBay

This one is a bit more but it has a buy it now. OEM FORD 8.8 31 SPLINE TRACTION LOK POSI UNIT MUSTANG | eBay

Hope u get it all fixed up.
-Brad