I have a 99 Z28 and whenever I turn my airconditioner on my voltage drops to about 10? This has been happening for about 6months now. I have replaced the battery and still no help. I was thinking of trying to find the alternator they put in the b4c package. Does anyone know the partnumber? What is the voltage on a stock alternator supposed to run at?

Thanks,

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99 Red Z28 A4
3.42 Richmond Gears, Powerslot Rotors, G2 Air Induction Lid with K&N, Fasttoys Ram Air System, BMR Strut tower brace, LCA's, Adj Panhard Rod, Spiderbar subframe connectors, MSD 8.5 ignition wires, 160 hypertech thermostat, HPP3 Programming, Hooker Catback,Hooker Y-Pipe, Hooker Headers, Eharwood SS style hood, Oem SS spoiler, 17" Chrome SS Wheels

 

I found out that the B4C package has a 160 amp alternator. However my local GM dealer does not have a part number for it. Does anyone know where I can get one?

Thanks in advance,

 

TTT

 

Instead of buying a B4C alternator, why don't you check the voltage output of your own alternator? Grab a voltmeter, start your car, and check the charge coming into the battery. Should be around 11-13volts at idle. Then, turn your A/C on, check it again. Shouldn't be any significant drop. If there is, drive down to (Your favorite parts store here) and have them run a regulator check. The money you'll save you can then pour into your mods budget!!
just my $.02.

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2000 Pewter Camaro SS, K&N, SLP lid, Flowmaster catback, 160 stat, Hurst short throw, and SLP springs!!
2001 T/A WS6, K&N, SLP lid, Flowmaster catback, A4 tranny, best time of 13.24 with Mickeys!! Lookin for more!!