[mastkiss1234]

i just bought a 96 f350 (not a dually).the tag on the rear end is (s 123n)(L 10 10 2)(6030C).can you tell the gears and who made it from those numbers?or is it on the vin number?thanks

 

[greenskeeper79]

Is there a 4 between the L and 10?

That would indicate 4.10 gears with limited slip.

If you get the door jam sticker axle code you can find the ratio with that as well.

 

[JMCX]

I believe all the F250-350's from some time in the 80's till now have used a Sterling (Ford) 10.25" rearend. Our PSD's either came with 3.54 or 4.10 gears unless superduty (F450).

 

[mastkiss1234]

axle code is c5.thanks

 

[BlueMule]

C5 is 4.10 limited slip

http://www.drivetrain.com/Fordtrkratio_posidata.html