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Jeep CJ History

Discussion in 'Jeep CJ' started by Evan, Oct 27, 2016.

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  1. Evan

    Evan Administrator
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    1954: CJ-5 (1954-1983) enters production, based on the Korean War-era Willys M38A1

    2.2L Willys Hurricane Inline-4

    2.5L Iron Duke Inline-4

    1965: Jeep CJ-5 Receives Buick V6 Dauntless Option, Power Steering Option

    1967: 2-barrel carb for V6; added 5hp and 10lb-ft torque

    1969: Side Marker Lights Added

    1970: Kaiser sold to American Motors Corporation (AMC)

    1971: Powr-Lok Replaced by Trac-Lok Limited Slip Differential

    1972: To accommodate new engines, hood stretched 5 inches, wheelbase also extended 3 inches

    2.5L Iron Duke Retired, Replaced with 3.8L Inline-6

    4.2L Inline-6 Option, 5.0L V8 Option, Full Floating Front Dana 30 Axle

    1973: Updated Dashboard, Center Gauge now has Speedometer, Fuel, and Temp Gauges

    1976: Jeep CJ-7 (1976-1986) Enters Production

    Wheelbase 10-inches longer than CJ-5, rear curvature of door deleted for more open design, hard top, full steel doors, and an automatic transmission were all options. Optional AWD Quadra-Trac system. Improved handling, comfort, and stability over CJ-5.

    Engine Options: AMC 2.5L I4, 2.5L GM “Iron Duke”, 3.8L AMC I6, 5.0L AMC V8

    Transmissions: Tremec T-150 (manual, 3 speed), Trecmec T-176 (manual, 4 speed), Borg-Warner SR-4 (manual, 4 speed), Borg-Warner T-4 (manual, 4-speed), Warner T-18 (manual, 4 speed), Borg-Warner T-5 (manual, 5-speed), GM TH-400 (optional 3 speed automatic), TF-999 (optional 3 speed automatic for 4.2L), TF-904 (optional 3-speed automatic for 2.5L).

    Transfer Cases: Aforementioned Quadra-Trac #1339 (1976-1979), Dana 20 (1976-1979), and Dana 300 (1980-1986).
     
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  2. Evan

    Evan Administrator
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    1976, Continued: Changes to CJ-5 Design

    CJ-5: Frame goes from open channel to boxed in front of rear axle, tub became more rounded, windshield angle changed. 1976 switched from Dana 44 one-piece rear to AMC 20 2-piece assembly. Some early 1976 models may retain the desirable Dana 44.

    Implications: Soft tops from 1955-1975 (early model) will not fit 1976-1983 (later model, sometimes referred to as “long nosed” CJ-5). AMC 20 axle, while having a larger ring gear than the older Dana 44, uses a 2-piece assembly; former 1-piece Dana 44 is a stronger design.


    1977: Power disk brakes, optional A/C, Optional “Golden Eagle” package (1976-1983).

    1979: Standard engine becomes 4.2L I6, Carter BBD 2-barrel carb

    1980: CJ-5 changes to standard GM “Iron Duke” 2.5L I4, 4.2L retained as an option.

    1981: CJ-8 Scrambler (1981-1986) Enters Production, AM/FM Radio Option

    CJ-8: 103-inch wheelbase, longer than CJ-7, Removable Half-Cab Option, Manual front locking hubs, 4 or 5 speed manual transmission, Optional 3-speed automatic, Rare Full Steel Hardtop available on Alaskan Postal Service CJ-8s

    1983: Production Ends for CJ-5

    1986: Production Ends for CJ-7, CJ-8
     
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