I hope you guys can help me out. I am looking to find a part number for 3.55 gears for a 9.75 axle for a 99 Lightning. I need to replace the gears and don't want to put the 4.10's back in. If anyone knows where I can find a part number or if anyone works for ford and can give me the number I would appreciate it.

Thanks,
Randy

 

I have a set with about 6k miles on them, that I might sell. Drop me an email if you are interested. In the meantime, I'll check the part number off them.

Ian

 

The only part number on my gears is 355 F75CA K7.

Ian

 

Thanks Ian,

They are for my father so I will check with him.