GM Alternator upgrades
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0 Watt CAFz'r
Joined: Jul 2010
Posts: 10
GM Alternator upgrades
I need to upgrade my stock 105 amp alternator, I see that Napa has a 140 amp unit listed for my truck (1998 GMC C1500 5.7). Does anyone know if it is a bolt on? Or of any other options for more amperage?
Thread Starter
0 Watt CAFz'r
Joined: Jul 2010
Posts: 10
The spec max current draw for both my amps is 150 amps, and my current alternator is rated for 105 amps. I will be running dual batteries and will upgrade the big 3 before I reinstall the big amp ( had to go in for warranty repairs).
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