Contents Section: Differentials & Drive Axles All sections

Drive Axle Ratio Identification GMC Pickup R2500

Identification code or part number for front and rear axle is stamped on forward surface of right axle tube, near carrier.

ApplicationRatio
"K" Series3.42:1, 3.73:1, 4.10:1, 4.56:1
"T" Series3.08:1, 3.42:1, 3.73:1, 4.11:1
"V" Series
Automatic Hub2.73:1, 3.08:1, 3.42:1, 3.73:1, 4.10:1
Manual Hub2.73:1, 3.08:1, 3.42:1, 3.73:1, 4.10:1
"V" Series (Dana)3.73:1, 4.10:1, 4.56:1

FRONT AXLE RATIO IDENTIFICATION

ApplicationRatio
7.5" Ring Gear
"M" Series2.73:1, 3.08:1, 3.23:1, 3.42:1, 3.73:1, 4.10:1
"S" Series2.73:1, 3.08:1, 3.42:1, 3.73:1, 4.11:1
"T" Series3.42:1, 3.73:1, 4.11:1
7.625" Ring Gear ("S" & "T" Series)3.08:1, 3.42:1
8.5" Ring Gear
"C", "R" & "V" Series2.73:1, 3.08:1, 3.42:1, 3.73:1
"G" & "K" Series3.08:1, 3.42:1, 3.73:1
9.5" Ring Gear
"C", "G", "K" & "R" Series3.42:1, 3.73:1, 4.10:1, 4.56:1
"P" Series3.73:1
"V" Series3.42:1, 3.73:1, 4.10:1
9.75" Ring Gear ("G" Series)4.10:1, 4.56:1
10.5" Ring Gear
"C", "G", "K" & "R" Series3.42:1, 3.73:1, 4.10:1, 4.56:1
"P" Series3.73:1, 4.10:1, 4.56:1, 4.88:1, 5.13:1
"V" Series3.73:1, 4.10:1, 4.56:1
12" Ring Gear ("P" Series)5.29:1

REAR AXLE RATIO IDENTIFICATION