slolt1

iTrader: (75)

what altenater are you using for the ls1 in a fox would you run the mustang and build a bracket or run a ls altenater

G-Body

iTrader: (4)

If I was keeping the motor EFI and using a factory LS PCM then I would probably keep the LS1 alt.

If it were carb and I had the LS1 alt and the brackets fit I would use it. If you have the ford alt you could run it.

In reality there is no right answer. The LS1 doesn`t care if it spins a GM or ford alt, and the battery doesn`t care whose alt charges it. Both the GM LS1 alt and the ford 3G are good designs, the 3G does have more aftermarket support though.

slolt1

iTrader: (75)

i was gonna run the ls1 fuel injected
but i have a new 4g altenater for the ford and all new wires but guess i could do some changes

G-Body

iTrader: (4)

Theres nothing wrong with running the 4g then. Just turn the alt circuit codes off in the PCM so that you don`t get a check engine light.

99MUSTANG5.3L

I think I will be keeping the Ford unit in my 01 MUSTANG and just fabbing some brackets. I will be using the Ford unit because it's there and I want to keep the budget as low as possible.