Ok im wondering if anyone can give me a idea on which size of alt i should go with. I have a 91 bird with a 350, i do run the AC ( live in AZ ) and i have my fans set up on a switch to turn both on. The power seems to be fine untill i have fans on with the lights on and the AC on lol. I replaced the alt with whatever the stock amp one is ( please clue me in on what size it is lol ) cause the old one was even worse.

So the question, what size should i go with and what size is stock? Will a 100 amp work or should i go bigger since i am running a dual fan switch set up?

 

105 amp A/C Delco is Stock for a 350.

 

PowerMaster 140Amp

 

i just put the iceberg 170 CS130 in her 88 350 firebird

nice piece

rock solid output
defiinitely felt cooler when i touched it compared to the stock one

have to see what the long term life will be.

 

Do you guys have any links of the higher output amp alternators? I guess i have the 105 amp one which i would think would be more than enough but now that its summer the voltage drops down do about 9-10 when im at a stop with the AC on and fans going.

 

http://www.alternatorparts.com/

the cs140 is supposed to be better, but costs a little more, but supposedly worth it

the iceberg dropped right in no problems

summit also has the power laster listed as a GM TPI alternator

either one should be fine