Classic Mustangs (Tech) Technical discussions about the Mustangs of yester-year.

Generator to Alternator switch

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Old Oct 11, 2009 | 10:07 AM
  #1  
dpellicone's Avatar
dpellicone
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From: NC
Default Generator to Alternator switch

1st time post! Just picked up a 64.5, has the 260 and generator. Does anyone have any information on what is needed to switch to a alternator?

THANKS!!
Old Oct 11, 2009 | 11:01 AM
  #2  
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rbinck
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The best way to do this is to use a single wire alternator. They make a regulator that will attach to the back of a stock 1965 alternator and they also make an alternator that has the single wire regulator built in. They should be available at the Mustang specialty suppliers.

I have Falcons which use the same setup, so here is some reference information:
Alternator brackets: 1963-1970 ALTERNATOR BRACKETS- V-8 -BLACK
One wire regulator: 1960-1970 ONE WIRE VOLTAGE REGULATOR FOR ALTERNATOR
Spacer: 1960-1970 ALTERNATOR SPACER - ALL V-8

You can get an alternator for a 1965 at any parts store. Be sure to heed the note on the spacer:
This is a spacer that fits between the alternator and the cylinder head on the small block V-8. It is necessary to provide correct alignment of the alternator. This part will fit on any year equipped with a 260, 289 or 302 cu. in. engine and alternator. The alternator mount bolt for the 289 and 302 Cu.In. engines is 7/16" diameter course threads. The holes on the end of the heads on the 260 cu. in. engine are only 3/8" coarse. So, on the 260 cu.in. engine, those holes must be drilled and tapped to 7/16" coarse.
Then you will need a long 7/16" bolt and a bolt for the adjusting bracket. Some people have had a bolt made that has a 7/16" shaft and 3/8" threads cut on the end to avoid having to drill and tap the head. You may also be able to find a sleeve to fit over a 3/8" bolt as well.

I'd look around at some of the Classic Mustang suppliers for a kit. I'm sure there is one.
Old Oct 11, 2009 | 11:57 AM
  #3  
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2+2GT
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Originally Posted by dpellicone
1st time post! Just picked up a 64.5, has the 260 and generator. Does anyone have any information on what is needed to switch to a alternator?

THANKS!!
Why? This will cost a lot of money, and it's really no better, and will lower the value of the car. Ford only switched to alternators because they were cheaper to make than generators.
Old Oct 11, 2009 | 04:36 PM
  #4  
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dpellicone
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Thanks for the information! more to think about. want to keep it original but might need to ensure reliability for a semi daily driver..
Old Oct 11, 2009 | 05:10 PM
  #5  
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2+2GT
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Originally Posted by dpellicone
Thanks for the information! more to think about. want to keep it original but might need to ensure reliability for a semi daily driver..
I have an older car that needed a generator rebuild when it was 30 years old and had 120,000 miles on it. Reliable enough? Reliability depends more on how you maintain the car than any other factor.
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