{FORGED?} Re: alternator upgrade

[AMC74Hornet@xxxxxxxxx]

On September 30, 2004 Matt Haas wrote:

> Ian,
> 
> You may have a Delco alternator already. I'm pretty sure AMC started using
> them in the 70's but I'm not sure when. If that's the case and it's the
> original alternator, the output rating is stamped on the body (I think it's
> near the plug in the side but I'm not 100% sure on that). 63 amps was a
> very common size but I think there is also one around 50 amps.
> 
> If you need more amps, there are plenty of aftermarket choices. If you have
> a Delco alternator, I think you can go up to 200 amps. If you have a
> Motorola, Power Master makes 100 and 140 amp units that bolt to the factory
> brackets (this was recently discussed -- in some cases slight changes to
> the brackets and/or belt lengths are needed). If you're willing to make up
> brackets, there are all sorts of choices available.
> 
> On the other hand, if you're not having problems with your battery draining
> now, you're probably okay.
> 
> Matt
> 
> At 08:14 PM 9/29/2004 -0700, you wrote:
> 
> 
> >i've been thinking what with the high powered stereo i have, fog lights,
> >and the electronic fan i'm putting in, the stock alternator might not be
> >up to snuff not sure what the rating on one from a '77 232 is... 60A?
> >perhaps i should upgrade. what do we have available for upgrades? the
> >taurus fans pull about 75 amps for a millisecond going up to high power...
> >so maybe a 90A or 110A unit would  be a good idea. any suggestions on
> >where to look, and what will fit?
> >
> >
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> mhaas@xxxxxxx
> Cincinnati, OH
> http://www.mattsoldcars.com
> 1966 Rambler Rebel
> 1968 Rambler American sedan
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I believe 1975 was the first year of the Delco, also the first year of electronic ignition and cat's on some models. Also if your alternator is on the pass side under the A/C compressor it's probably a Delco. Any higher amp Delco should just bolt in. Before changeing the alt. use a volt meter to check the output of the one you have with all the electric's turned on. My son has a custom built 65 amp Motorola in his 72 Javelin with a killer sterio and it is enough with all the electric's turned on. I am the guy that had all the problems installing the Delco in place of the Motorola on my 74 258 6 cyl Hornet with power steering. I installed a 100 amp Power Master. It charges 14.5 volts without a load on it and 14 volts with all the electric's turned on. 
"Doc"    













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