Ford Mustang Forums banner

1 - 4 of 4 Posts

·
Registered
Joined
·
709 Posts
Discussion Starter #1
just installed the 3g in my car. went from 12.4 at idle(94 amp delco) to 12.9-13 with the 3g with my fuel pump and fan running. i have march underdrive pulleys and the alt is about 2 1/2". what kind of readings is everyone else getting?
 

·
Registered
Joined
·
71 Posts
well without the pulleys i get 13-14
 

·
Registered
Joined
·
246 Posts
with u/d, i get about 13.9. i ran my heater full blast the other day and it showed 12.9 or around that area.
 

·
Registered
Joined
·
1,247 Posts
I have underdrive pulleys on my car but left the pulley that came installed on the 130amp alternator from PA-Performance.

I don't have A/C or electric fan (yet), but with the headlights on the voltage at the battery terminals was 14.7!!!!

I think I tried it again with the blower for the A/C running (no A/C) and the headlights on and it didn't change much!

One of the best mods I've done!

FWIW, I left the stock charging wires (the two black/orange ones) from the alternator to the solenoid and added the PA-Performance thick gauge wire in addition to this.
 
1 - 4 of 4 Posts
Top