Re: voltage across battery when charging ?
To back up what has already been said, this sounds a lot like my charging situation. I have underdrives, but the stock pulley on my Powermaster and it barely keeps voltage above 12.5 at idle.
What is the diameter of your crankshaft pulley? That will tell us all for sure if you have/or don't have underdrives...
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1988 GT Convertible
331 10:1 TW heads, GT-40 intake, MSD, TRW flattops, B Cam w/ 1.7's, MAC exhaust, 24's, 70 TB, 76 MAF, 3.73's, Pro 5.0, Koni's, Anderson PMS, Wideband 02, yatta, yatta...
One week with new motor, two speeding tickets...joy
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