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Wiring Diagrams

Engine Mechanical, Chassis
& Electrical

  • Domestic Auto
  • Domestic Truck
  • Import Auto & Truck
  • Engine Performance

    Drive Axles

    1978 Domestic Light Truck

    Drive Axles

    4-Wheel Drive Steering Knuckles, Locking Hubs, Propeller Shafts


    Drive Axles

    Trouble Shooting

    Gear Tooth Contact Patterns

    Drive Axle Ratio Identification

    AMC/Jeep 8-7/8" Ring Gear

    Chrysler Corp. 8-3/8" & 9-1/4" Ring Gear

    Ford Motor Co. Separate Housing

    General Motors 8-1/2" & 8-7/8" Ring Gear

    General Motors 10-1/2" Ring Gear

    General Motors 12-1/4" Ring Gear

    Dana/Spicer Semi-Floating

    Dana/Spicer Full-Floating

    Rockwell F-130-NX Single Speed


    Note - Front Drive Axle Application - With the exception of some Chevrolet & GMC Four-Wheel drive models, all manufacturers use a Dana/Spicer Full-Floating front drive axle. Some Chevrolet & GMC moels are equipped with eiether a Dana/Spiccer Full-Floating or a General Motors 8-1/2" Ring Gear front drive axle


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    Positive Traction Differentials

    Chrysler Corp. Sure-Grip

    Ford Motor Co. Traction-Lok

    Dana/Spicer Power-Lok

    Dana/Spicer Trac-Lok

    Eaton (One Pc. Case) Locking Differential

    Eaton (Two Pc. Case) Locking Differential


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    4-Wheel Drive Steering Knuckles

    All Models

    Locking Hubs

    Dana/Spicer External Locking

    Dana/Spicer Internal Locking

    Warn Selective Lock-O-Matic

    Warn Selective Manual Type

    Warn Selective Spring Lock

    Propeller Shafts

    Propeller Shaft Alignment

    Universal Joints


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