Joe Tork
Member
I have a 69 GTS with a 383 which is completely original. What is the correct amperage alternator to use. I'm seeing 35, 45, and 60 amp alternators listed for this car.
Might as well put the biggest one you can on it. Really won't hurt anything. I have a Powermaster 60 amp on mine and it works great.
60 A shouldn't threaten your wiring if it is pristine. Most aren't,
Maybe, maybe not
Please READ this article
http://www.madelectrical.com/electricaltech/amp-gauges.shtml
Even if you do not perform this mod, it points up the pitfalls and whys of electrical failures in these systems.
AND Ma KNEW the wiring was marginal. 60-65A optional alternators DID NOT USE the usual factory wiring. Google up "fleet, taxi" wiring some time.