I know I have a 140 amp on my '94Z. I don't think I have the original. I don't see any numbers on it though it does say Delco Remy. Does anyone have an actual part number? I'd like to order one a.s.a.p.

 

GM PART # 10463680
ACDelco # 321-1113
That's a 140 amp alt, which yours should be. Yours should have a plastic fan and a nut (not a bolt) that secures the battery cable on the back.
Numerous auto parts store carry the ACDelco alternator (same as the GM part).

 

Thanks shoebox. You're right about the plastic fan setup. That's exactly what I have. Just out of curiosity, I heard that some early model '94s came with a metal fan and later models came with the plastic. I always wondered if this is true or not. Thanks again for the help.

 

The parts book does indicate that the 124 amp alt that was used in the 1993 was carried over into 1994, so early 1994's may have had them.