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One Final GM 3-Wire Alt. Question

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City-Boy McCoy

12-31-2006 13:30:00

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Howdy, Boys:

If a fellow wants a GM 3-wire alternator and he goes to Auto Zone, or where ever, to get one, what does he ask for as far as application? I mean, if I walked into a parts store around here and said, "Give me a GM 3-wire alternator.", the punk kid behind the counter with the rock music headset plugged into his ears would just stare off into space like I was an ancient alien (which to him, I am, I suppose). mike

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jack n

12-31-2006 17:54:29

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Re: One Final GM 3-Wire Alt. Question in reply to City-Boy McCoy, 12-31-2006 13:30:00

ask for a one wire delco.if parts store don;t have go to electrial shop it's about the same price.all it will have to hook up is the batt. wire.

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City-Boy McCoy

01-01-2007 04:51:56

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Re: One Final GM 3-Wire Alt. Question in reply to jack n, 12-31-2006 17:54:29

Thanks, but no; I am convinced that a 3-wire is the way to go - at least for a tractor, based upon what the fellows on this forum have said. mike

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Brownie450

12-31-2006 15:35:56

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Re: One Final GM 3-Wire Alt. Question in reply to City-Boy McCoy, 12-31-2006 13:30:00

A 73 IH pickup with no AC or anything else came out with a 37 amp alternator standard. This is what we use on all our conversions & have never had any trouble. Never have to worry about overloading the wiring or any other problems.

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old

12-31-2006 16:01:43

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Re: One Final GM 3-Wire Alt. Question in reply to Brownie450, 12-31-2006 15:35:56

Same alternator as the Chevs and you probably pay more just by asking for an alternato for the IH instead of the Chev

Hobby farm

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old

12-31-2006 14:10:40

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Re: One Final GM 3-Wire Alt. Question in reply to City-Boy McCoy, 12-31-2006 13:30:00

Just to add to waht Bob says. If you have an O'reillys auto parts store close get one from them for as he said a 1975-1985 Chev pickup. But the nice thing with O'reillys is if you pay about $5-10 more you can get one with a life time warrenty so if it ever stops working you can just take it back and get a new one for free.

Hobby farm

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Bob

12-31-2006 13:38:46

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Re: One Final GM 3-Wire Alt. Question in reply to City-Boy McCoy, 12-31-2006 13:30:00

A SAFE range of years to ask for is a 1975 to 1985 Chevy pickup.

WITH AC will probably get you a 65 or 70 Amp unit.

WITHOUT AC will probably get you a 45 to 55 AMP unit.

The lower Amp units are OK for your conversion, UNLESS you will have really high electrical loads.

The lower Amperage is still WAY over what a generator would put out, yet doesn't put such a high charging rate at startup though the (perhaps) old wiring and ammeter. YOUR choice!

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City-Boy McCoy

12-31-2006 13:41:56

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Thanks, Bob. in reply to Bob, 12-31-2006 13:38:46

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