Thread: Alternator
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Old 04-18-2021, 07:16 PM   #19
RichardJ
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Join Date: Apr 2010
Location: So Cal
Posts: 1,415
Re: Alternator
All Alternators drop off at lower rpm. If it's holding close to 13.0 at idle with AC and lights on, you'll be fine.
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'67 GMC 2500, 292, 4spd, AC
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