The Ford Bronco II 5.8 V8, produced for a limited run between 1978 and 1979, represented a significant, though short-lived, offering in the first generation Bronco II lineup. Positioned as the performance-oriented variant, it aimed to provide a blend of off-road capability and on-road power not found in the smaller-engined models. The Bronco II, itself a downsized version of the original Bronco, was Ford’s answer to the growing popularity of compact SUVs, particularly the Jeep CJ series. This 5.8L V8 model was intended to appeal to buyers who desired more than the base engine’s capabilities, offering a substantial increase in horsepower and torque for towing, hauling, and navigating challenging terrain. It was a relatively rare configuration, making it a sought-after vehicle among collectors and enthusiasts today.
Technical Specifications
| Brand | Ford |
| Model | Bronco II |
| Generation | Bronco II |
| Type (Engine) | 5.8 V8 (160 Hp) AWD |
| Start of production | 1978 |
| End of production | 1979 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SUV |
| Seats | 5 |
| Doors | 3 |
| Fuel Type | Petrol (Gasoline) |
| Weight-to-power ratio | 13.2 kg/Hp, 75.7 Hp/tonne |
| Weight-to-torque ratio | 6 kg/Nm, 167.8 Nm/tonne |
| Power | 160 Hp @ 3800 rpm |
| Power per litre | 27.7 Hp/l |
| Torque | 355 Nm @ 2200 rpm (261.83 lb.-ft. @ 2200 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | 351M |
| Engine displacement | 5766 cm3 (351.86 cu. in.) |
| Number of cylinders | 8 |
| Engine configuration | V-engine |
| Cylinder Bore | 101.6 mm (4 in.) |
| Piston Stroke | 88.9 mm (3.5 in.) |
| Compression ratio | 8:1 |
| Number of valves per cylinder | 2 |
| Fuel injection system | Carburettor |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | OHV |
| Kerb Weight | 2115 kg (4662.78 lbs.) |
| Max. weight | 2720 kg (5996.57 lbs.) |
| Max load | 605 kg (1333.8 lbs.) |
| Length | 4580 mm (180.31 in.) |
| Width | 2014 mm (79.29 in.) |
| Height | 1918 mm (75.51 in.) |
| Wheelbase | 2642 mm (104.02 in.) |
| Front track | 1630 mm (64.17 in.) |
| Rear (Back) track | 1640 mm (64.57 in.) |
| Ride height (ground clearance) | 198 mm (7.8 in.) |
| Drag coefficient (Cd) | 0.65 |
| Minimum turning circle (turning diameter) | 10.8 m (35.43 ft.) |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 4 gears, manual transmission |
| Front brakes | Disc |
| Rear brakes | Drum |
| Tires size | 235/75 R15 |
| Wheel rims size | 15 |
Powertrain & Engine Architecture
The heart of the Bronco II 5.8 V8 was the Ford 351M (Modified) engine. This 5.8-liter (351 cubic inch) V8 was a robust and relatively simple design, utilizing a cast iron block and cylinder heads. The engine featured a two-barrel carburetor for fuel delivery, a common setup for the era, and an overhead valve (OHV) valvetrain. While not particularly sophisticated by modern standards, the 351M was known for its low-end torque, making it well-suited for off-road driving and towing. The engine’s 8:1 compression ratio was a compromise between performance and the ability to run on lower octane gasoline. The four-speed manual transmission was the only transmission option offered with this engine, providing a direct connection between the engine and the wheels. This transmission was chosen to handle the substantial torque output of the 351M and provide drivers with greater control in challenging conditions.
Driving Characteristics
The Bronco II 5.8 V8 offered a distinctly different driving experience compared to the smaller-engined versions. The 160 horsepower and 261.83 lb-ft of torque provided brisk acceleration and ample power for climbing steep hills or towing trailers. While not a sports car, the V8 Bronco II felt considerably more responsive than its counterparts. The manual transmission allowed for precise gear selection, maximizing the engine’s power band. However, the Bronco II’s relatively short wheelbase and solid axles meant that the ride quality was not as refined as more modern SUVs. The 4×4 system, engaged via a floor-mounted lever, provided excellent traction in off-road situations. The combination of the V8 engine and the manual transmission made this variant a favorite among those who enjoyed a more engaging and capable driving experience.
Equipment & Trim Levels
The Bronco II 5.8 V8 was typically equipped with a fairly basic level of trim, reflecting its focus on functionality and off-road capability. Standard features generally included a vinyl interior, basic instrumentation, and a heater. Air conditioning and upgraded upholstery were available as optional extras. The dashboard layout was straightforward and utilitarian, prioritizing ease of use over aesthetics. The exterior typically featured minimal chrome trim and durable paint finishes. The emphasis was on providing a rugged and reliable vehicle that could withstand the rigors of off-road use.
Chassis & Braking
The Bronco II utilized a body-on-frame construction, providing a robust and durable chassis. The front suspension consisted of a Twin I-Beam setup, while the rear suspension featured leaf springs. This configuration provided a good balance of ride comfort and off-road capability. The braking system consisted of disc brakes on the front wheels and drum brakes on the rear. While adequate for the vehicle’s weight and performance, the braking system was not particularly powerful by modern standards. The tires, typically 235/75 R15, were chosen for their durability and off-road traction.
Market Reception & Comparison
The Bronco II 5.8 V8 received mixed reviews from automotive critics. While the engine’s power and torque were praised, some reviewers noted that the vehicle’s handling and ride quality were compromised by its short wheelbase and solid axles. Compared to the smaller-engined Bronco II models, the 5.8 V8 offered a significant performance upgrade, but it also came with a higher price tag and reduced fuel economy. The 5.8L V8 was often compared to the Jeep CJ-7, which offered a similar level of off-road capability and performance. However, the Bronco II offered more interior space and a slightly more comfortable ride.
Legacy
The Ford Bronco II 5.8 V8 remains a relatively rare and collectible vehicle today. The 351M engine, while not known for its longevity, is generally reliable if properly maintained. Parts availability can be a challenge, but a dedicated community of enthusiasts has emerged to support the preservation and restoration of these vehicles. The Bronco II 5.8 V8 is remembered as a capable and enjoyable SUV that offered a unique blend of power, off-road capability, and classic Ford styling. Its limited production run and distinctive powertrain have cemented its place as a desirable vehicle among collectors and enthusiasts.
