Just wondering if anyone can tell me what kind of rear axle I have in my S'Crew. It's an '03, 5.4L, with, 3.55's in the diff. I'm not sure what kind of axles Ford uses now days, but I know they used to use Dana's. What kind/s do they use now and what are the possible axles that they might have stuffed under my truck???

 

I am 95% sure that it is a 9.75 rear axle.

 

Formatting sucks, but the information is here:

REAR AXLE SPECIFICATIONS
Series F-150 Except 7700 Lb. Payload Group irAlp & irBlp (V8).
F-150 With 7700 Lb. Payload Group irAlp & irBlp (V8) only.
Make Ford Standard and Limited Slip

Max. Rating @ Ground (lbs.) 3800 With 4.2L and 4.6L engines.
4200 With 5.4L engine. 5300 for 7700#

Type: Semi-Floating
Drive: Hotchkiss
Housing Š Type: Cast Center
Š Cover: Attachment Bolted
Lubricant Capacity (pt.) 5.5-5.8 7.5-8.0 7700#
Wheel Bearings Š Type Straight Roller
Gears Š Type: Hypoid
Š Material: Alloy Steel
Ring Gear Š Pitch Diameter (in.) 8.80(4.2,4.6) 9.75(5.4) 10.25 (7700)
Pinion Š Mounting Overhung
Differential Š Type 2-Pinion
Š Bearings Tapered Roller
Axle Shaft Š Minimum Diameter (in.) 1.29
Š Diameter over Splines (in.) 1.32
Š No. of Splines (Hub End) 31