The Jeep Cherokee SJ, specifically the 3-door model equipped with the 5.9-liter V8 engine and automatic transmission, represents a significant chapter in the history of the iconic American SUV. Produced for a limited run between 1978 and 1979, this variant occupied a unique position within the Cherokee lineup, offering a blend of off-road capability and relatively accessible V8 power. It was part of the first generation (SJ) Cherokee, which pioneered the concept of a compact, car-based SUV, a departure from the larger, truck-based vehicles that dominated the market at the time. This particular configuration catered to buyers seeking a more powerful and refined experience than the base inline-six engine offered, while still maintaining the Cherokee’s core strengths of durability and four-wheel drive performance.
Technical Specifications
| Brand | Jeep |
| Model | Cherokee |
| Generation | Cherokee I (SJ) 3-door |
| Type (Engine) | 5.9 V8 (133 Hp) 4WD Automatic |
| Start of production | 1978 |
| End of production | 1979 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SUV |
| Seats | 5 |
| Doors | 3 |
| Fuel Type | Petrol (Gasoline) |
| Maximum speed | 136 km/h (84.51 mph) |
| Weight-to-power ratio | 14.9 kg/Hp, 67.2 Hp/tonne |
| Power | 133 Hp @ 3625 rpm |
| Power per litre | 22.6 Hp/l |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | AMC N |
| Engine displacement | 5893 cm3 (359.61 cu. in.) |
| Number of cylinders | 8 |
| Engine configuration | V-engine |
| Cylinder Bore | 103.63 mm (4.08 in.) |
| Piston Stroke | 87.38 mm (3.44 in.) |
| Compression ratio | 8.25:1 |
| Fuel injection system | Carburettor |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | OHV |
| Engine oil capacity | 4.7 l (4.97 US qt | 4.14 UK qt) |
| Coolant | 13.2 l (13.95 US qt | 11.61 UK qt) |
| Kerb Weight | 1980 kg (4365.15 lbs.) |
| Max. weight | 2330 kg (5136.77 lbs.) |
| Max load | 350 kg (771.62 lbs.) |
| Trunk (boot) space – maximum | 2693 l (95.1 cu. ft.) |
| Fuel tank capacity | 83 l (21.93 US gal | 18.26 UK gal) |
| Length | 4700 mm (185.04 in.) |
| Width | 2040 mm (80.31 in.) |
| Height | 1800 mm (70.87 in.) |
| Wheelbase | 2770 mm (109.06 in.) |
| Front track | 1740 mm (68.5 in.) |
| Rear (Back) track | 1640 mm (64.57 in.) |
| Front overhang | 780 mm (30.71 in.) |
| Rear overhang | 1150 mm (45.28 in.) |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the rear wheels permanently, and the front wheels are driven through an electrically or mechanically operated clutch if necessary. |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 3 gears, automatic transmission |
| Front suspension | Leaf spring |
| Rear suspension | Leaf spring |
| Front brakes | Disc |
| Rear brakes | Drum |
| Steering type | Cone worm with recirculation balls |
| Wheel rims size | 8J x 15 |
Powertrain & Engine Architecture
The heart of this Cherokee variant is the AMC 360 cubic inch (5.9-liter) V8 engine, designated as the AMC N code. This engine, a staple of AMC vehicles for many years, is a pushrod (OHV) design known for its robust construction and relatively simple maintenance. It utilized a two-barrel carburetor for fuel delivery, a common setup for the era, and produced 133 horsepower at 3625 rpm. The engine’s longitudinal mounting within the chassis contributed to a more balanced weight distribution. The automatic transmission was a Chrysler-sourced TorqueFlite A727 three-speed unit, chosen for its durability and suitability for both on-road driving and moderate off-road use. While not offering the refinement of more modern automatics, the A727 provided smooth shifts and reliable performance.
Driving Characteristics
The combination of the 5.9 V8 and the three-speed automatic transmission resulted in a driving experience that prioritized usable torque over outright acceleration. While not a particularly fast vehicle by modern standards, the Cherokee 5.9 offered ample power for highway cruising and tackling challenging terrain. The automatic transmission’s gear ratios were geared towards providing strong low-end torque, making it well-suited for off-road driving and towing. Compared to the standard inline-six engine, the V8 provided a noticeable improvement in responsiveness and overall performance. However, it wasn’t as nimble as the manual transmission versions, which offered more direct control and slightly better fuel economy.
Equipment & Trim Levels
The 3-door Cherokee 5.9 V8 Automatic typically came with a fairly basic level of equipment, reflecting its positioning as a more utilitarian SUV. Standard features generally included cloth upholstery, a basic AM radio, and manual windows and locks. Options included upgraded sound systems, air conditioning, and a limited-slip differential for improved off-road traction. The interior design was functional and durable, prioritizing practicality over luxury. The trim level was generally consistent across the 5.9 V8 models, with limited customization options available.
Chassis & Braking
The Cherokee SJ utilized a body-on-frame construction, providing a robust and durable chassis. The suspension consisted of leaf springs at both the front and rear, a design choice that prioritized load-carrying capacity and off-road capability over ride comfort. The front brakes were disc brakes, while the rear brakes were drums. This configuration was typical for the era and provided adequate stopping power for the vehicle’s weight and performance. Steering was accomplished via a cone worm and recirculating ball system, offering a relatively direct feel but lacking the precision of more modern steering technologies.
Market Reception & Comparison
The Cherokee 5.9 V8 Automatic received mixed reviews from automotive critics. While the V8 engine was praised for its power and torque, the automatic transmission was sometimes criticized for its lack of responsiveness and fuel inefficiency. Compared to the inline-six engine, the V8 offered a significant performance upgrade, but at the cost of increased fuel consumption and a higher purchase price. The V8 variant was also positioned below the later Cherokee Limited models, which offered more luxurious features and a higher level of refinement. Fuel economy was a significant concern, averaging around 12-15 mpg in real-world driving conditions.
Legacy
The Jeep Cherokee SJ 3-door 5.9 V8 Automatic, while a relatively short-lived variant, holds a special place in the history of the Cherokee. Its combination of V8 power, four-wheel drive capability, and compact size made it a popular choice for buyers seeking a versatile and capable SUV. Today, these vehicles are sought after by collectors and enthusiasts, particularly those who appreciate their classic American styling and robust mechanicals. The AMC 360 V8 engine is known for its durability and relative ease of maintenance, making these Cherokees a viable option for restoration and continued use. However, finding parts can be challenging, and ongoing maintenance is essential to keep these vehicles in good running condition. The 5.9 V8 variant represents a unique and desirable chapter in the Cherokee’s storied history, embodying the spirit of American adventure and off-road capability.
