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Old 02-15-2010, 12:56 PM   #1
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Alternator

The alternator is going out on my new TV 1994 C2500 Suburban.

I have a decision to make, to I go with a stock 105 amp unit or upgrade to the 140 amp alternator? With two batteries on the truck and than adding a third while towing, do I need the extra 35 amps?????

Thanks in advance.....
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Old 02-15-2010, 01:21 PM   #2
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The performance on the overwound units isn't that great.

You might, on the other hand, consider a CS-144 upgrade. It's a larger frame alternator that produces more output, especially at idle. You might need a different belt and there is a wiring adapter you use because the connector is a little different.

GM CS-144 High Amp Alternators, Nations Power Engineering
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Old 02-15-2010, 01:34 PM   #3
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No.

Unless you are doing a lot of stop and start, less than 30 miles per start, you do not have enough load to warrant the large alternator.
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