New Alternator To Avoid

Mattax said

If you can find a different brand, it may the '78 amp' revised squareback will do the job.
I'd look into finding the matching regulator. It sounds like you've done other rewiring to handle the additional loads.

Have you seen the test data that Nacho got with a rebuilt '78 amp' alt? I've reposted it here a couple times. You could use that to see roughly the max power output at various engine rpms if you know the pulley ratio.

Click to expand...

It’s more a mishmash wiring situation. Battery, charging circuit, ignition, gauges and fans, fuel pump wiring is all new, large gauge wire, proper grounds, fuses, circuit breakers etc and so forth mixed with the old existing wiring for lighting. I’ll look up the posts you mention, and the pulleys I have are a set of CVF billet with (iirc) larger crank pulley combined for a slightly overdriven water pump and alt. Can’t recall ratios, just that it’s spinning the alt and wp a little faster