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Alternator Wire Gauge?

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Old Oct 7, 2010 | 09:42 PM
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Default Alternator Wire Gauge?

The original wire gauge on my 67 Camaro is 10. I reused this gauge and connected it to the LS1 alternator. While the alternator is the lower output model, it still produces more amperage than the stock 67.
More recently, I decided to reuse the orig LS1 battery cables and noticed that the LS1 alternator wire looks to be much larger...like about 6GA.
Is the 10GA wire safe/acceptable for the LS1 application?
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Old Oct 7, 2010 | 10:03 PM
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This is a good chart to use
Attached Thumbnails Alternator Wire Gauge?-wiresizingchartbw.jpg  
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Old Oct 7, 2010 | 10:24 PM
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Just what I was looking for. It looks like the 10GA isn't gonna cut it.
Thanks very much!
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Old Oct 7, 2010 | 10:25 PM
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I use 4ga for alternator charge cables.
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Old Oct 7, 2010 | 10:46 PM
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Originally Posted by Speedy911
I use 4ga for alternator charge cables.
I'm wondering what GA I have...6 or 4? Anyone know what size comes with a 98 alternator?
From the looks of it, the LS1 cable will take the short/direct route rather than all the way around the nose, as the 67 did.
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Old Oct 8, 2010 | 09:14 PM
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i think the factory short pigtail is usually 8ga or at least that what it was on the silverado one i got
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Old Oct 9, 2010 | 09:41 AM
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I have taken wires off of a variety of late model GM vehicles with alternators ranging from 102 amps and up... they use 6 gauge wire. The later model vehicles use a smaller "fusible link" wire on one end (about 6 inches long) to protect against shorts, etc.
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Old Oct 10, 2010 | 06:30 AM
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i used 2g but my battery is in the trunk
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Old Oct 10, 2010 | 11:02 AM
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Thanks all!
After cutting the prev mentioned 67 stock 10 ga, I decided to reuse the factory batt/alt wires and chose one of the red 4? GA.
Now I might have another issue which I will pose in another post....
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