Spent hours trying to get the lower alternator mounting bolt out. Ive used pb blaster, breaker bar, torch etc. Its pretty much completely stripped. What now?

 

Ah, no problem.
What is that a 12 or a 13mm?
Get a BLACK impact socket which has 6 points - like the shape of a stop sign.
Pound that onto the bolt with a hammer.
See if that gets it off.

No?

Then get a huge pair of REAL vice grips - a huge pair.
Lock the vice grips on.
Get a 4 pound mallet and pound on the vice grip handle anti-clockwise.

 

You can also try to pound on a 12 point socket one mm smaller.
Then get a breaker bar.

you may break the socket unless it is black and impact grade.

 

I think its a 12. I'll try that...btw, the damn alt. pulley is kind of in the way. None of my sockets fit it. Do I need a special tool to get that off so I can have easier access to the bolt?

 

Irwin® BOLT-GRIP™ 394001 - Bolt Extractor Set | O'Reilly Auto Parts


try a bolt extractor set, worked like a charm for me when i had to change diff fluids in my 2000 gmc sierra

 

Easy on alternator bracket while hammering. Craftsman has good extractor set, too.

Craftsman 10 pc. Impact Grade Bolt-Out™ Damaged Bolt/Nut Remover - Tools - Hand Tools - Tap & Dies & Sets

 

Those bolts are all 13mm if I remember correctly.

 

Ok then you can pound on a 12 mm maybe.
Or get a 13mm impact socket and pound that onto the bolt.
To pound the socket on - put the socket on an extension and then pound on the extension.
That way the pulley is not in the way.

 

If you have one of those high speed cut off tools, you can use a cut off tool
which is a high speed grinder to lap that bolt off.

Problem is tight space and the grinder tends to destroy other parts due to operator error.

With that said, a cut off tool has gotten me out of jams.
Harbor Freight has them.

 

If all else fails x2 on the grinder. Once the alternator is off use a locking wrench to remove the bolt