The first major problem discovered during the test fit of the engine was the stock alternator location. The alternator needs to be relocated and the belt re-routed away from the strut tower. The LS4 charging system is computer controlled, using feedback from a current sensor on the positive battery cable. The body control module uses a signal from the current sensor to generate a signal which controls the alternator. Since I am not installing a BCM with this swap, and to simplify wiring, I chose to use a Fiero alternator. The only available location for the alternator is on the back of the engine, above the right axle. This is also the location of the stock belt tensioner, so a new tensioning system needed to be designed.
The new alternator bracket also mounts the tensioner and idler pulley.
