How do I know what rear end I got in my 97 3/4 ton? The tag says 1296 and 3.55 which I imagine is my gear ratio but I need to know which rear end I got to do a gear swap for 4.10s

Also, my truck clunks when turning hard and it sounds like the spare in the rear is clunking but its up in there tight. Could it be bushings in the anti sway bar or whatever it is that goes along the rear end from one side to the other? Anything common I should know?

Thanks,
GG

 

It's a 10.25"

 

I don't know if that is the right code. Not that I'm an expert

 

The decal on the drivers door pillar has an axle code as well. If your truck is a LD it will have a 10.25 semi floater, and if it's an HD model it will have the full floater version.

 

So I am still lost here guys.... If I post up the axle codes both front and rear will that work? I believe its HD but what do I need to post up here so someone that knows whats going on can edumacate me....

 

On the door jamb it says axle code is 39. So what do I got?

 

See here... Ford Axle Code Chart .: Articles

That's the full floater 10.25 with a 3.55 open differential.

 

THank ya Thank ya,,,, Now what about the front axle? I only saw one code and it surely is not the same as the rear...

 

TTT Still looking for some help here with the front axle...