Forward Control Rear Axles

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    Some available Rear Axle options for the Forward Control are:

    Year: 1993 GMC Forward Control Rear Axle

  • 3500 Series drum rear brakes SRW
  • 3500 Series disc rear brakes w/o motor home chassis 11-1/2" ring gear 125" & 133" WB
  • 3500 Series drum rear brakes DRW
  • 3500 Series disc rear brakes w/o motor home chassis 10-1/2" ring gear
  • 30 Series disc rear brakes w/o motor home chassis 10-1/2" ring gear
  • 30 Series disc rear brakes motor home chassis 10-1/2" ring gear
  • 30 Series disc rear brakes w/o motor home chassis 11-1/2" ring gear 157" & 178" WB
  • 30 Series disc rear brakes motor home chassis 11-1/2" ring gear
  • 30 Series disc rear brakes w/o motor home chassis 11-1/2" ring gear 125" & 133" WB
  • 3500 Series disc rear brakes w/o motor home chassis 11-1/2" ring gear 157" & 178" WB
  • 3500 Series disc rear brakes motor home chassis 10-1/2" ring gear
  • 3500 Series disc rear brakes motor home chassis 11-1/2" ring gear
  • 30 Series drum rear brakes SRW
  • 30 Series drum rear brakes DRW


    • Year: 1992 GMC Forward Control Rear Axle

  • 30 Series disc rear brakes w/o motor home chassis 125" & 133" WB
  • 3500 Series disc rear brakes motor home chassis 10-1/2" ring gear
  • 3500 Series disc rear brakes motor home chassis 11-1/2" ring gear
  • 30 Series disc rear brakes motor home chassis 10-1/2" ring gear
  • 3500 Series drum rear brakes DRW
  • 3500 Series disc rear brakes w/o motor home chassis 125" & 133" WB
  • 30 Series drum rear brakes SRW
  • 30 Series disc rear brakes motor home chassis 11-1/2" ring gear
  • 30 Series drum rear brakes DRW
  • 30 Series disc rear brakes w/o motor home chassis 157" & 178" WB
  • 3500 Series disc rear brakes w/o motor home chassis 157" & 178" WB
  • 3500 Series drum rear brakes SRW


    • Year: 1991 GMC Forward Control Rear Axle

  • 3500 Series disc rear brakes w/o motor home chassis 11-1/2" ring gear 157" & 178" WB
  • 30 Series disc rear brakes w/o motor home chassis 12" ring gear (Rockwell)
  • 3500 Series disc rear brakes motor home chassis 11-1/2" ring gear
  • 3500 Series disc rear brakes w/o motor home chassis 11-1/2" ring gear 125" & 133" WB
  • 30 Series disc rear brakes motor home chassis 11-1/2" ring gear
  • 30 Series disc rear brakes motor home chassis 10-1/2" ring gear
  • 3500 Series drum rear brakes SRW
  • 30 Series disc rear brakes w/o motor home chassis 11-1/2" ring gear 125" & 133" WB
  • 3500 Series drum rear brakes DRW
  • 30 Series disc rear brakes w/o motor home chassis 11-1/2" ring gear 157" & 178" WB
  • 3500 Series disc rear brakes w/o motor home chassis 12" ring gear (Rockwell)
  • 3500 Series disc rear brakes motor home chassis 10-1/2" ring gear
  • 30 Series drum rear brakes DRW
  • 30 Series drum rear brakes SRW


    • Year: 1990 GMC Forward Control Rear Axle

  • 30 Series disc rear brakes motor home chassis 10-1/2" ring gear 208" WB
  • 3500 Series disc rear brakes motor home chassis 11-1/2" ring gear
  • 30 Series disc rear brakes motor home chassis 11-1/2" ring gear
  • 3500 Series disc rear brakes w/o motor home chassis
  • 30 Series disc rear brakes w/o motor home chassis
  • 3500 Series disc rear brakes motor home chassis 10-1/2" ring gear 208" WB
  • 30 Series drum rear brakes DRW
  • 30 Series drum rear brakes SRW
  • 30 Series disc rear brakes motor home chassis 10-1/2" ring gear 157" & 178" WB
  • 3500 Series drum rear brakes SRW
  • 3500 Series drum rear brakes DRW
  • 3500 Series disc rear brakes motor home chassis 10-1/2" ring gear 157" & 178" WB


    • Year: 1989 GMC Forward Control Rear Axle

  • 3500 Series disc rear brakes motor home chassis 10-1/2" ring gear 208" WB
  • 30 Series disc rear brakes motor home chassis 10-1/2" ring gear 157" & 178" WB
  • 3500 Series disc rear brakes motor home chassis 11-1/2" ring gear
  • 3500 Series disc rear brakes w/o motor home chassis
  • 30 Series drum rear brakes DRW
  • 20 Series
  • 30 Series disc rear brakes w/o motor home chassis
  • 3500 Series drum rear brakes SRW
  • 30 Series disc rear brakes motor home chassis 11-1/2" ring gear
  • 30 Series disc rear brakes motor home chassis 10-1/2" ring gear 208" WB
  • 3500 Series drum rear brakes DRW
  • 3500 Series disc rear brakes motor home chassis 10-1/2" ring gear 157" & 178" WB
  • 30 Series drum rear brakes SRW
  • 2500 Series


    • Year: 1988 GMC Forward Control Rear Axle

  • 30 Series SRW 3.23 ratio (opt GU5)
  • 3500 Series DRW non-removable carrier 14 bolt cover 3.73 ratio (opt GT4)
  • 3500 Series SRW 4.56 ratio (opt HC4)
  • 30 Series DRW non-removable carrier 10 bolt cover
  • 30 Series DRW non-removable carrier 14 bolt cover 4.10 ratio (opt GT5)
  • 30 Series SRW 3.73 ratio (opt GT4)
  • 30 Series SRW 4.56 ratio (opt HC4)
  • 30 Series DRW non-removable carrier 14 bolt cover 4.56 ratio (opt HC4)
  • 3500 Series DRW non-removable carrier 14 bolt cover 4.10 ratio (opt GT5)
  • 20 Series
  • 3500 Series SRW 3.73 ratio (opt GT4)
  • 3500 Series DRW non-removable carrier 14 bolt cover 4.56 ratio (opt HC4)
  • 3500 Series SRW 4.10 ratio (opt GT5)
  • 2500 Series
  • 3500 Series DRW non-removable carrier 10 bolt cover
  • 30 Series SRW 3.42 axle ratio (opt GU6)
  • 3500 Series DRW non-removable carrier 14 bolt cover 3.21 ratio (opt HC8)
  • 3500 Series SRW 3.42 axle ratio (opt GU6)
  • 3500 Series SRW 3.21 ratio (opt HC8)
  • 30 Series SRW 3.21 ratio (opt HC8)
  • 30 Series DRW non-removable carrier 14 bolt cover 3.42 axle ratio (opt GU6)
  • 3500 Series DRW removable carrier
  • 30 Series DRW removable carrier
  • 30 Series SRW 4.10 ratio (opt GT5)
  • 3500 Series DRW non-removable carrier 14 bolt cover 3.42 axle ratio (opt GU6)
  • 3500 Series SRW 3.23 ratio (opt GU5)
  • 30 Series DRW non-removable carrier 14 bolt cover 3.73 ratio (opt GT4)


    • Year: 1987 GMC Forward Control Rear Axle

  • 3500 Series DRW non-removable carrier 14 bolt cover 4.56 ratio (opt HC4)
  • 30 Series DRW non-removable carrier 14 bolt cover 4.10 ratio (opt GT5)
  • 3500 Series DRW removable carrier
  • 30 Series DRW non-removable carrier 14 bolt cover 3.42 axle ratio (opt GU6)
  • 20 Series
  • 3500 Series SRW 3.73 ratio (opt GT4)
  • 3500 Series SRW 3.21 ratio (opt HC8)
  • 30 Series DRW non-removable carrier 14 bolt cover 4.56 ratio (opt HC4)
  • 3500 Series DRW non-removable carrier 14 bolt cover 4.10 ratio (opt GT5)
  • 3500 Series SRW 4.56 ratio (opt HC4)
  • 30 Series SRW 3.21 ratio (opt HC8)
  • 3500 Series DRW non-removable carrier 14 bolt cover 3.73 ratio (opt GT4)
  • 2500 Series
  • 30 Series SRW 3.73 ratio (opt GT4)
  • 3500 Series SRW 4.10 ratio (opt GT5)
  • 30 Series DRW non-removable carrier 14 bolt cover 3.73 ratio (opt GT4)
  • 30 Series SRW 4.56 ratio (opt HC4)
  • 3500 Series SRW 3.42 axle ratio (opt GU6)
  • 30 Series DRW removable carrier
  • 30 Series SRW 3.23 ratio (opt GU5)
  • 3500 Series DRW non-removable carrier 10 bolt cover
  • 30 Series DRW non-removable carrier 10 bolt cover
  • 3500 Series DRW non-removable carrier 14 bolt cover 3.21 ratio (opt HC8)
  • 30 Series SRW 3.42 axle ratio (opt GU6)
  • 30 Series SRW 4.10 ratio (opt GT5)
  • 3500 Series SRW 3.23 ratio (opt GU5)
  • 3500 Series DRW non-removable carrier 14 bolt cover 3.42 axle ratio (opt GU6)
  • 30 Series DRW non-removable carrier 14 bolt cover 3.21 ratio (opt HC8)


    • Year: 1986 GMC Forward Control Rear Axle

  • 30 Series SRW 4.10 ratio (opt GT5)
  • 30 Series SRW 3.21 ratio (opt HC8)
  • 30 Series DRW non-removable carrier 14 bolt cover 3.42 axle ratio (opt GU6)
  • 3500 Series SRW 3.73 ratio (opt GT4)
  • 30 Series SRW 3.42 axle ratio (opt GU6)
  • 3500 Series SRW 4.10 ratio (opt GT5)
  • 3500 Series SRW 3.42 axle ratio (opt GU6)
  • 3500 Series DRW non-removable carrier 14 bolt cover 4.10 ratio (opt GT5)
  • 3500 Series DRW non-removable carrier 14 bolt cover 3.21 ratio (opt HC8)
  • 30 Series DRW non-removable carrier 10 bolt cover
  • 30 Series SRW 4.56 ratio (opt HC4)
  • 2500 Series
  • 3500 Series SRW 3.21 ratio (opt HC8)
  • 3500 Series DRW non-removable carrier 14 bolt cover 4.56 ratio (opt HC4)
  • 30 Series SRW 3.23 ratio (opt GU5)
  • 30 Series DRW non-removable carrier 14 bolt cover 3.73 ratio (opt GT4)
  • 30 Series DRW non-removable carrier 14 bolt cover 4.10 ratio (opt GT5)
  • 3500 Series SRW 3.23 ratio (opt GU5)
  • 3500 Series SRW 4.56 ratio (opt HC4)
  • 30 Series DRW removable carrier
  • 3500 Series DRW non-removable carrier 14 bolt cover 3.73 ratio (opt GT4)
  • 3500 Series DRW non-removable carrier 10 bolt cover
  • 30 Series DRW non-removable carrier 14 bolt cover 4.56 ratio (opt HC4)
  • 30 Series SRW 3.73 ratio (opt GT4)
  • 20 Series
  • 3500 Series DRW non-removable carrier 14 bolt cover 3.42 axle ratio (opt GU6)
  • 30 Series DRW non-removable carrier 14 bolt cover 3.21 ratio (opt HC8)
  • 3500 Series DRW removable carrier


    • Year: 1985 GMC Forward Control Rear Axle

  • 3500 Series DRW removable carrier
  • 30 Series DRW non-removable carrier 14 bolt cover 4.56 ratio (opt HC4)
  • 3500 Series DRW non-removable carrier 14 bolt cover 4.56 ratio (opt HC4)
  • 3500 Series DRW non-removable carrier 14 bolt cover 3.42 axle ratio (opt GU6)
  • 30 Series SRW 3.42 axle ratio (opt GU6)
  • 3500 Series DRW non-removable carrier 14 bolt cover 3.21 ratio (opt HC8)
  • 30 Series DRW non-removable carrier 14 bolt cover 3.21 ratio (opt HC8)
  • 30 Series DRW non-removable carrier 14 bolt cover 3.73 ratio (opt GT4)
  • 30 Series DRW non-removable carrier 10 bolt cover
  • 3500 Series SRW 3.42 axle ratio (opt GU6)
  • 30 Series SRW 3.23 ratio (opt GU5)
  • 30 Series DRW non-removable carrier 14 bolt cover 4.10 ratio (opt GT5)
  • 3500 Series DRW non-removable carrier 10 bolt cover
  • 3500 Series SRW 3.23 ratio (opt GU5)
  • 3500 Series SRW 4.56 ratio (opt HC4)
  • 30 Series DRW non-removable carrier 14 bolt cover 3.42 axle ratio (opt GU6)
  • 2500 Series
  • 3500 Series DRW non-removable carrier 14 bolt cover 4.10 ratio (opt GT5)
  • 3500 Series SRW 3.21 ratio (opt HC8)
  • 3500 Series SRW 3.73 ratio (opt GT4)
  • 3500 Series SRW 4.10 ratio (opt GT5)
  • 30 Series DRW removable carrier
  • 30 Series SRW 3.73 ratio (opt GT4)
  • 20 Series
  • 3500 Series DRW non-removable carrier 14 bolt cover 3.73 ratio (opt GT4)
  • 30 Series SRW 4.56 ratio (opt HC4)
  • 30 Series SRW 3.21 ratio (opt HC8)
  • 30 Series SRW 4.10 ratio (opt GT5)


    • Year: 1984 GMC Forward Control Rear Axle

  • 30 Series DRW non-removable carrier 14 bolt cover 4.10 ratio (opt GT5)
  • 2500 Series
  • 3500 Series DRW non-removable carrier 14 bolt cover 4.56 ratio (opt HC4)
  • 3500 Series SRW 3.23 ratio (opt GU5)
  • 30 Series SRW 3.42 axle ratio (opt GU6)
  • 30 Series SRW 3.21 ratio (opt HC8)
  • 30 Series SRW 4.56 ratio (opt HC4)
  • 3500 Series DRW non-removable carrier 10 bolt cover
  • 30 Series DRW non-removable carrier 10 bolt cover
  • 3500 Series SRW 3.21 ratio (opt HC8)
  • 30 Series SRW 3.23 ratio (opt GU5)
  • 30 Series DRW non-removable carrier 14 bolt cover 3.73 ratio (opt GT4)
  • 3500 Series SRW 4.56 ratio (opt HC4)
  • 3500 Series DRW removable carrier
  • 30 Series DRW non-removable carrier 14 bolt cover 3.42 axle ratio (opt GU6)
  • 3500 Series DRW non-removable carrier 14 bolt cover 3.42 axle ratio (opt GU6)
  • 3500 Series SRW 4.10 ratio (opt GT5)
  • 30 Series DRW non-removable carrier 14 bolt cover 3.21 ratio (opt HC8)
  • 3500 Series DRW non-removable carrier 14 bolt cover 4.10 ratio (opt GT5)
  • 30 Series DRW non-removable carrier 14 bolt cover 4.56 ratio (opt HC4)
  • 3500 Series SRW 3.73 ratio (opt GT4)
  • 30 Series SRW 4.10 ratio (opt GT5)
  • 30 Series DRW removable carrier
  • 3500 Series SRW 3.42 axle ratio (opt GU6)
  • 30 Series SRW 3.73 ratio (opt GT4)
  • 3500 Series DRW non-removable carrier 14 bolt cover 3.73 ratio (opt GT4)
  • 20 Series
  • 3500 Series DRW non-removable carrier 14 bolt cover 3.21 ratio (opt HC8)


    • Year: 1983 GMC Forward Control Rear Axle

  • 30 Series DRW non-removable carrier 14 bolt cover 4.10 ratio (opt GT5)
  • 30 Series SRW 3.42 axle ratio (opt GU6)
  • 30 Series SRW 3.23 ratio (opt GU5)
  • 3500 Series SRW 4.10 ratio (opt GT5)
  • 3500 Series SRW 3.23 ratio (opt GU5)
  • 30 Series SRW 3.21 ratio (opt HC8)
  • 3500 Series DRW non-removable carrier 14 bolt cover 4.56 ratio (opt HC4)
  • 2500 Series
  • 3500 Series SRW 3.73 ratio (opt GT4)
  • 30 Series DRW removable carrier
  • 30 Series SRW 4.10 ratio (opt GT5)
  • 3500 Series DRW non-removable carrier 14 bolt cover 3.73 ratio (opt GT4)
  • 30 Series SRW 3.73 ratio (opt GT4)
  • 30 Series DRW non-removable carrier 10 bolt cover
  • 3500 Series DRW removable carrier
  • 3500 Series SRW 3.21 ratio (opt HC8)
  • 20 Series
  • 30 Series DRW non-removable carrier 14 bolt cover 4.56 ratio (opt HC4)
  • 30 Series DRW non-removable carrier 14 bolt cover 3.73 ratio (opt GT4)
  • 3500 Series DRW non-removable carrier 14 bolt cover 3.21 ratio (opt HC8)
  • 3500 Series SRW 4.56 ratio (opt HC4)
  • 3500 Series DRW non-removable carrier 14 bolt cover 3.42 axle ratio (opt GU6)
  • 30 Series DRW non-removable carrier 14 bolt cover 3.42 axle ratio (opt GU6)
  • 3500 Series DRW non-removable carrier 10 bolt cover
  • 30 Series DRW non-removable carrier 14 bolt cover 3.21 ratio (opt HC8)
  • 3500 Series SRW 3.42 axle ratio (opt GU6)
  • 3500 Series DRW non-removable carrier 14 bolt cover 4.10 ratio (opt GT5)
  • 30 Series SRW 4.56 ratio (opt HC4)


    • Year: 1982 GMC Forward Control Rear Axle

  • 30 Series SRW 4.56 ratio (opt HC4)
  • 3500 Series DRW removable carrier
  • 3500 Series DRW non-removable carrier 14 bolt cover 3.42 axle ratio (opt GU6)
  • 2500 Series 4.10 ratio (opt GT5)
  • 2500 Series 4.56 ratio (opt HC4)
  • 3500 Series DRW non-removable carrier 14 bolt cover 3.21 ratio (opt HC8)
  • 20 Series 3.42 axle ratio (opt GU6)
  • 20 Series 4.56 ratio (opt HC4)
  • 3500 Series SRW 3.23 ratio (opt GU5)
  • 20 Series 3.21 ratio (opt HC8)
  • 20 Series 3.73 ratio (opt GT4)
  • 2500 Series 3.21 ratio (opt HC8)
  • 3500 Series SRW 4.56 ratio (opt HC4)
  • 3500 Series SRW 3.73 ratio (opt GT4)
  • 20 Series 4.10 ratio (opt GT5)
  • 2500 Series 3.42 axle ratio (opt GU6)
  • 30 Series DRW non-removable carrier 14 bolt cover 3.73 ratio (opt GT4)
  • 30 Series SRW 3.21 ratio (opt HC8)
  • 3500 Series DRW non-removable carrier 14 bolt cover 4.10 ratio (opt GT5)
  • 30 Series SRW 3.73 ratio (opt GT4)
  • 3500 Series DRW non-removable carrier 14 bolt cover 4.56 ratio (opt HC4)
  • 30 Series SRW 4.10 ratio (opt GT5)
  • 30 Series DRW removable carrier
  • 30 Series DRW non-removable carrier 10 bolt cover
  • 30 Series SRW 3.23 ratio (opt GU5)
  • 3500 Series SRW 3.21 ratio (opt HC8)
  • 3500 Series DRW non-removable carrier 14 bolt cover 3.73 ratio (opt GT4)
  • 3500 Series SRW 4.10 ratio (opt GT5)
  • 30 Series DRW non-removable carrier 14 bolt cover 3.21 ratio (opt HC8)
  • 30 Series DRW non-removable carrier 14 bolt cover 4.56 ratio (opt HC4)
  • 30 Series DRW non-removable carrier 14 bolt cover 4.10 ratio (opt GT5)
  • 30 Series SRW 3.42 axle ratio (opt GU6)
  • 3500 Series SRW 3.42 axle ratio (opt GU6)
  • 2500 Series 3.73 ratio (opt GT4)
  • 3500 Series DRW non-removable carrier 10 bolt cover
  • 30 Series DRW non-removable carrier 14 bolt cover 3.42 axle ratio (opt GU6)


    • Year: 1981 GMC Forward Control Rear Axle

  • 20 Series 4.10 ratio (opt GT5)
  • 30 Series DRW non-removable carrier 14 bolt cover 3.21 ratio (opt HC8)
  • 30 Series SRW 3.73 ratio (opt GT4)
  • 3500 Series DRW non-removable carrier 14 bolt cover 4.10 ratio (opt GT5)
  • 3500 Series SRW 3.23 ratio (opt GU5)
  • 20 Series 3.42 axle ratio (opt GU6)
  • 30 Series SRW 3.42 axle ratio (opt GU6)
  • 30 Series DRW non-removable carrier 14 bolt cover 3.42 axle ratio (opt GU6)
  • 3500 Series SRW 3.21 ratio (opt HC8)
  • 30 Series DRW non-removable carrier 14 bolt cover 4.56 ratio (opt HC4)
  • 30 Series DRW non-removable carrier 14 bolt cover 4.10 ratio (opt GT5)
  • 3500 Series SRW 4.56 ratio (opt HC4)
  • 2500 Series 4.10 ratio (opt GT5)
  • 3500 Series SRW 3.73 ratio (opt GT4)
  • 20 Series 3.73 ratio (opt GT4)
  • 2500 Series 3.42 axle ratio (opt GU6)
  • 3500 Series SRW 3.42 axle ratio (opt GU6)
  • 3500 Series DRW non-removable carrier 14 bolt cover 4.56 ratio (opt HC4)
  • 20 Series 3.21 ratio (opt HC8)
  • 30 Series SRW 4.56 ratio (opt HC4)
  • 3500 Series SRW 4.10 ratio (opt GT5)
  • 30 Series DRW non-removable carrier 10 bolt cover
  • 2500 Series 3.73 ratio (opt GT4)
  • 3500 Series DRW non-removable carrier 14 bolt cover 3.42 axle ratio (opt GU6)
  • 30 Series DRW non-removable carrier 14 bolt cover 3.73 ratio (opt GT4)
  • 30 Series DRW removable carrier
  • 30 Series SRW 3.23 ratio (opt GU5)
  • 30 Series SRW 4.10 ratio (opt GT5)
  • 2500 Series 3.21 ratio (opt HC8)
  • 30 Series SRW 3.21 ratio (opt HC8)
  • 2500 Series 4.56 ratio (opt HC4)
  • 3500 Series DRW removable carrrier
  • 20 Series 4.56 ratio (opt HC4)
  • 3500 Series DRW non-removable carrier 10 bolt cover
  • 3500 Series DRW non-removable carrier 14 bolt cover 3.21 ratio (opt HC8)
  • 3500 Series DRW non-removable carrier 14 bolt cover 3.73 ratio (opt GT4)


    • Year: 1980 GMC Forward Control Rear Axle

  • 3500 Series DRW non-removable carrier 14 bolt cover 3.73 ratio (opt GT4)
  • 3500 Series DRW non-removable carrier 14 bolt cover 4.56 ratio (opt HC4)
  • 3500 Series SRW 3.21 ratio (opt HC8)
  • 3500 Series SRW 4.56 ratio (opt HC4)
  • 30 Series SRW 4.10 ratio (opt GT5)
  • 30 Series DRW non-removable carrier 14 bolt cover 4.10 ratio (opt GT5)
  • 3500 Series SRW 3.73 ratio (opt GT4)
  • 30 Series SRW 3.73 ratio (opt GT4)
  • 3500 Series SRW 3.42 axle ratio (opt GU6)
  • 3500 Series DRW removable carrier early
  • 3500 Series DRW non-removable carrier 10 bolt cover
  • 30 Series SRW 4.56 ratio (opt HC4)
  • 3500 Series SRW 4.10 ratio (opt GT5)
  • 30 Series DRW removable carrier late
  • 30 Series DRW non-removable carrier 14 bolt cover 3.21 ratio (opt HC8)
  • 30 Series SRW 3.21 ratio (opt HC8)
  • 3500 Series DRW removable carrier late
  • 3500 Series DRW non-removable carrier 14 bolt cover 3.21 ratio (opt HC8)
  • 3500 Series DRW non-removable carrier 14 bolt cover 3.42 axle ratio (opt GU6)
  • 30 Series DRW non-removable carrier 10 bolt cover
  • 30 Series SRW 3.42 axle ratio (opt GU6)
  • 3500 Series SRW 3.23 ratio (opt GU5)
  • 3500 Series DRW non-removable carrier 14 bolt cover 4.10 ratio (opt GT5)
  • 30 Series DRW non-removable carrier 14 bolt cover 3.42 axle ratio (opt GU6)
  • 30 Series DRW non-removable carrier 14 bolt cover 4.56 ratio (opt HC4)
  • 30 Series DRW removable carrier early
  • 30 Series DRW non-removable carrier 14 bolt cover 3.73 ratio (opt GT4)
  • 30 Series SRW 3.23 ratio (opt GU5)


    • Year: 1979 GMC Forward Control Rear Axle

  • 3500 Series SRW 4.56 ratio (opt HC4)
  • 30 Series DRW removable carrier early
  • 30 Series SRW 4.10 ratio (opt GT5)
  • 3500 Series DRW non-removable carrier 14 bolt cover 3.42 axle ratio (opt GU6)
  • 3500 Series DRW non-removable carrier 10 bolt cover
  • 30 Series SRW 3.21 ratio (opt HC8)
  • 30 Series SRW 4.56 ratio (opt HC4)
  • 3500 Series SRW 4.10 ratio (opt GT5)
  • 30 Series DRW non-removable carrier 14 bolt cover 3.73 ratio (opt GT4)
  • 3500 Series DRW non-removable carrier 14 bolt cover 4.10 ratio (opt GT5)
  • 30 Series DRW removable carrier late
  • 3500 Series SRW 3.73 ratio (opt GT4)
  • 3500 Series SRW 3.21 ratio (opt HC8)
  • 3500 Series DRW non-removable carrier 14 bolt cover 3.21 ratio (opt HC8)
  • 30 Series SRW 3.42 axle ratio (opt GU6)
  • 30 Series DRW non-removable carrier 10 bolt cover
  • 30 Series DRW non-removable carrier 14 bolt cover 4.56 ratio (opt HC4)
  • 30 Series DRW non-removable carrier 14 bolt cover 4.10 ratio (opt GT5)
  • 3500 Series DRW non-removable carrier 14 bolt cover 4.56 ratio (opt HC4)
  • 3500 Series SRW 3.23 ratio (opt GU5)
  • 30 Series DRW non-removable carrier 14 bolt cover 3.42 axle ratio (opt GU6)
  • 3500 Series SRW 3.42 axle ratio (opt GU6)
  • 30 Series DRW non-removable carrier 14 bolt cover 3.21 ratio (opt HC8)
  • 3500 Series DRW non-removable carrier 14 bolt cover 3.73 ratio (opt GT4)
  • 30 Series SRW 3.23 ratio (opt GU5)
  • 3500 Series DRW removable carrier late
  • 3500 Series DRW removable carrier early
  • 30 Series SRW 3.73 ratio (opt GT4)