Just wondering if the Sierra rear diffs are H175?
eg.
The sierra diff ring gear size is listed as 6.9 inches 175.25 mm
Ring Gear Bolts 10 - 10mm bolts
Ring Gear Diameter 6.90 Inches
Pinion Shaft Diameter/Splines 1.379"/26
Axle Shaft Diameter / Splines .940 / 22 (Front)
1.05 / 26 (Rear)
Axle Tube Material / Diameter / Wall Thickness HREW / 2.56 / .120
Gear Ratio 3.73
Available Aftermarket Ratios 4.57, 5.38
Carrier Breaks None
Recommended Max Tire Size 32-Inches
Pinion Bearing Preload 7.8-14.7 in-lbs
Backlash .004-.006 in.
Ring Gear Torque 58-65 lbs-ft
Carrier Bearing Cap Torque 51-72 lbs-ft
http://zukioffroad.com/Tech_Library/sam ... ions.shtml
