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| | | | Joined: Sep 2010 Posts: 24 'Bolter | | 'Bolter Joined: Sep 2010 Posts: 24 | I am installing a/c in my 63 chevy 1/2 ton soon and have a question about altenators. It has a 40 amp externally regulated alt. and im thinking about buying a 80 or 100 amp alt for it. I have a dual electric fan set up and maybe a third pusher fan for the condensor, just depends on the high side pressure for the third fan. Should I switch to internally regulated or just buy the external 100 amp? I've heard its an easy switch, not really sure if Im going the right direction with the externally regulated alt. thanks for the input. I dont really care which way I go just want the best solution for my trucks electrical system with the extra load
Last edited by bumpnutz; 10/20/2010 5:18 PM.
| | | | | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | You will need an internal regulated alt for that kind of amps.
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | | | | Joined: Dec 2008 Posts: 337 Shop Shark | | Shop Shark Joined: Dec 2008 Posts: 337 | It is also my understanding you'll need an internally regulated alternator to obtain those amp levels. The following site has a ton of electrical information should you be interested: http://www.madelectrical.com/electricaltech/howitworks.shtmlI haven't done any recent research, but don't believe external regulators were ever upgraded, and the old contact points just don't have the same reliability as modern electronics. | | | | | Joined: Apr 2010 Posts: 474 Shop Shark | | Shop Shark Joined: Apr 2010 Posts: 474 | I've used this alternator 100 AMP ,1 wire, PN SUM-811001 .From Summit Racing is where I bought it.You should only need two fans at the most even with A/C.I use PERMA COOL PN19115 .They are 16in FANS with metal blades.The plastic blades do break easy.The fans CFM is 2950 per fan with a 9.8 AMP.Ive ran this combination many years hope this helps. | | |
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