GM Alternators

goldduster318 said
The thing is...the mopar ones fail more than these do. I think in the first 8 years of having this car, I had 2 of them die on me. Then the replacement somehow had a powder coated case so I ended up making my own ground wire to get it to work.

The mopar alternators also make almost no power at idle. And they're kind of prone to having issues with the isolation on the field wires and then either not working or overcharging.

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This $50 parts store 12SI has outlasted 2 Mopar alternators and 2 regulators. It's a 3-wire which I still recommend that you do so it runs the system as designed. With electric fans, Aeromotive A340 pump and EFI it's doing well. Only a 78 amp model with an option to go bigger, there were OEM 94A and many upgrades past it. The 6 GA wire helps with the efficiency though I didn't originally have this.

I still service a buncha these vehicles over decades, all kinda owners/ drivers/ stereos/amps, - a couple are daily drivers.
You know how many regs I put on in the last, hmm decade, one.
Alternators, - none, - I have put brushes and bearings in 3 or 4.
My own vehicles/kids , none in decades, or since built .
I'm sitting on a wooden chair (embracing it, lol)
Cheers .
Who cares if the alt doesn't put out at red lights with appliances, wipers, heater on, - the car doesn't care .
Thats what the battery is for, ballast, and if you notice, 50+ years later, stock ones are still running around.