Are all gen 3 LSX alternators interchangeable
F-Body alternators are "only" 105 amps. (I remember when that was huge)
Truck alternators are 105 or 145 amp depending on the small vs large case.
I use large case truck alternators on all my vehicles unless I can't get it to fit. They seem to be the cheapest and most likely to be in stock at the parts store - and they are the highest output for the money. This also keeps the ability to use the PCM to control the alternator's output intact.
Last edited by gofastwclass; Feb 4, 2014 at 10:45 AM.






