I have a 2004 Ford F150 Heritage Model 4x4.
It has a 4.6l stock engine, I have not done any mods to the motor or any other parts of the truck.
I was just wondering if those models come with Limited Slip differentials?
Also if not what would be my best bet to get?
And I have been looking around on the internet trying to find what the ratio is, and i have been getting number of answer, such as it is a 3.55, and other have said it has a 3.73.
Could someone please help me figure this out?
Thank you.

 

What is the axle code on the door jamb sticker?

 

Umm, i could not find the numbers out, sense the undercoat is covering it, but i know it has a 10 lug, and has a 8.8?

 

Crawl under and read the numbers off the tag on the rear axle if you can't read the door sticker.