I have an 88 Camaro IROC-Z with the 350 TPI. Anyone know what the alternator output voltage should be? I seem to be getting anywhere from 15 to 15.5 Volts at the battery. Thanks

 

15 volts with the engine running with no head lights or the accessories on at about 1500-2000rpm is about normal
but after you turn on all the accessories, lights, air-conditioner, etc. it should be about 13.1-13.7 volts

read thru the link

http://forum.grumpysperformance.com/...2&p=8575#p8575