NST Pulley Install - Crankshaft bolt stuck?

Alstann

Hey guys, I'm looking for some advice on installing the crankshaft pulleys. Me and a friend decided to tackle them one afternoon, and we came to a point where no matter how much strength we put on the breaker bar, we could not break the bolt loose.

We decided to lock up the engine by putting a tire iron in between the u-joint of the driveshaft, and having the iron rest against the bulkhead of the frame. Doing this, we found no movement with the pulley or any pulley for that matter, but with even with him giving it all he has (he's a big guy), we couldn't get it loose.

My only other idea was to remove the radiator, fans, bumper, and everything else that is in the way, to have straight on access to the bolt, so I could try an impact gun. I'm afraid I'll shear the head or something, and then I'll really be screwed.

Anyone have any thoughts, or how their mechanic did it?

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