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Old 01-21-2013, 05:42 PM   #1
Kevjulian
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Alternator Ext vs Int

I have a 71 C20 and I am considering replacing my externally regulated alternator with an internally regulated one. What are the pros and cons. I know I will need a different connector but what kind and where would be the best place to get the alternator and connector? Thanks for the assist

Kev
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Old 01-21-2013, 05:49 PM   #2
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Re: Alternator Ext vs Int

I would get a genuine rebuilt-by-Delco from O'Reileys or Advance or your local Delco distributor.

As far as connetors, on the alternator you can go buy a pigtail from a parts house, remove the connector, and swap onto your wires. At the regulator, just jumper outer to outer and inner to inner.
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Old 01-22-2013, 05:10 PM   #3
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Re: Alternator Ext vs Int

The internal is more reliable & has a more constant voltage which will make the bat. & electronic equip. last longer.
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Old 01-22-2013, 05:18 PM   #4
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Re: Alternator Ext vs Int

The main con is that the internal regulated alternators are more expensive.

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Old 01-22-2013, 05:55 PM   #5
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Re: Alternator Ext vs Int

There used to be a step by step how to thread for converting to an internal regulator alternator, but after much searching I cannot locate it? I'm pretty sure it was in the F.A.Q. section. I converted mine and it worked great.
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Old 01-22-2013, 07:19 PM   #6
Kevjulian
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Re: Alternator Ext vs Int

Thanks guys for all the info. This is why I love this site.

Kev
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Old 01-22-2013, 09:07 PM   #7
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Re: Alternator Ext vs Int

This conversion is found in the truck faq section.

http://www.chevelles.com/techref/tecref14.html

There are others on the net though.
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Old 01-23-2013, 12:03 AM   #8
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Re: Alternator Ext vs Int

Here's another thread.
http://67-72chevytrucks.com/vboard/s...d.php?t=119379
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