1981 Chevrolet C20 Suburban equipped with 7.4L V8 Gas OHV, 5.7L V8 Gas OHV, 5.0L V8 Gas OHV, 4.8L L6 Gas OHV
1
Front
FSGR with Open Differential with 2.73 or Higher Rear Axle Ratio with 28 Spline Teeth with 30 Spline Teeth with Empty Case with GM 8.5 Axle
1981 Chevrolet C20 Suburban equipped with 7.4L V8 Gas OHV, 5.7L V8 Gas OHV, 5.0L V8 Gas OHV, 4.8L L6 Gas OHV
Front
FSGR with Open Differential with 2.73 or Higher Rear Axle Ratio with 28 Spline Teeth with 30 Spline Teeth with Empty Case with GM 8.5 Axle
1981 Chevrolet C20 Suburban equipped with 7.4L V8 Gas OHV, 5.7L V8 Gas OHV, 5.0L V8 Gas OHV, 4.8L L6 Gas OHV
1
Rear
FSGR Case Split 4.10 And Down with GM 10.5 Axle
1981 Chevrolet C20 Suburban equipped with 7.4L V8 Gas OHV, 5.7L V8 Gas OHV, 5.0L V8 Gas OHV, 4.8L L6 Gas OHV
Rear
FSGR Case Split 4.10 And Down with GM 10.5 Axle