I'm working on a 1985 Chevy S10 Blazer with a bad alternator. This model uses a dual V-belt pulley on the alternator, but all replacements that come up online for this car use a single belt pulley. Looks like I will have to remove and re-use the original pulley on the new alternator.
Are most 12SI Delco Remy alternator pulleys swappable without running into problems with shaft length and thread depth?
One reason I ask is that this car originally used a 78 Amp alternator, but I can get a 94 Amp alternator in the same 12SI 3 o'clock form-factor, used in other GM cars from the same era. For example, the original on my car would be the 78A ACDelco 3342156A/Remy 20260, but the 94A ACDelco 3342193/Remy 20266 would also fit.
Thanks very much to any alternator experts!