Ring Gear, Differential

Ford 8.8 Inch Rear Differential
Backlash between ring gear and pinion teeth 0.254 - 0.308 mm (0.010 - 0.012 inch)
Ring gear maximum backlash variation between teeth 0.102 mm (0.004 inch)
Ring gear bolts 105 Nm (77 ft. lbs.)

Ford 9.75 Inch Rear Differential
Backlash between ring gear and pinion teeth 0.254 - 0.305 (0.010 - 0.01 inch)
Ring gear maximum backlash variation between teeth 0.102 (0.004 inch)
Ring gear bolts 150 Nm (111 ft. lbs.)

Ford 8.8 Inch Front Differential
Ring gear backlash 0.254 - 0.305 mm (0.010 - 0.012 inch)
Ring gear maximum backlash between teeth 0.101 mm (0.004 inch)
Ring gear bolts 105 Nm (77 ft. inch lbs.)