The 1986 Chevrolet Military Truck, often referred to as the M939 series, was a robust 5-ton cargo truck produced for the U.S. military. Built from the early 1980s into the 1990s, these trucks are renowned for their extreme durability and go-anywhere capability. Primarily available as a 6x6 cargo truck, with variants like dump trucks and wreckers, they offer a commanding presence and exceptional off-road prowess. Their popularity stems from their military pedigree, offering a unique blend of ruggedness and utilitarian design for off-road enthusiasts and collectors.
The Good
The 1986 Chevrolet Military Truck excels in extreme off-road performance and unparalleled reliability in harsh conditions. Its rugged design evokes a sense of adventure and capability, appealing to the emotional desire for freedom. Practically, its immense towing and hauling capacity, coupled with robust construction, offers exceptional value for specialized tasks.
The Bad
Key weaknesses include a lack of modern comfort features, a thirsty fuel consumption, and potentially high maintenance costs due to specialized parts. Older vehicles may suffer from rust, worn components, and outdated safety systems. Expect a loud and utilitarian driving experience.
1986 Chevrolet Military Truck: Quick Overview
- Engine Options: The primary engine found in the 1986 Chevrolet Military Truck (M939 series) is the Cummins NHC 250, a 8.3-liter turbocharged inline-six diesel engine. Some earlier models or specific variants might have used different engines, but the NHC 250 became the standard for much of the M939 production run.
- Horsepower: The Cummins NHC 250 engine typically produces around 240 horsepower at 2100 RPM.
- Torque: This engine is known for its substantial torque output, crucial for heavy-duty applications, rated at approximately 665 lb-ft at 1500 RPM.
- Fuel Economy: Fuel efficiency is not a strong suit of these military trucks. Expect very low figures, typically in the range of 5-8 miles per gallon (MPG), heavily dependent on load, terrain, and driving style.
- 0-60 Times: Acceleration figures are not readily available or relevant for this type of vehicle, as they are designed for utility and off-road capability, not speed. Reaching 60 mph would be a very slow and prolonged process, likely exceeding a minute.
- Towing Capacity: The M939 series trucks are rated for a Gross Vehicle Weight Rating (GVWR) of 54,000 pounds, with a payload capacity typically around 20,000 pounds. While not designed for traditional towing in the way a pickup truck is, they can haul significant weight on their bed and are capable of towing very heavy trailers or equipment using their robust chassis and drivetrain. Their towing capacity is generally considered to be in the range of 50,000+ pounds when properly configured and with appropriate trailer brakes.
- Trim-Level Features: These trucks were not offered in traditional consumer trim levels. Instead, they came in various configurations based on their military role:
- M939 Cargo: The standard 5-ton 6x6 cargo truck with a flatbed.
- M939 Dump Truck: Equipped with a hydraulic dump bed for hauling loose materials.
- M939 Wrecker: Featuring a recovery boom and winch for field repairs and vehicle recovery.
- M939 Tractor: Designed for towing heavy semi-trailers.
1986 Chevrolet Military Truck Specifications
Vehicle Information
| Year | 1986 |
| Make | Chevrolet |
| Model | Military Truck |
| Trim | - |
| Style | 4WD |
| Type | Pickup Truck |
| Category | Medium Truck |
Manufacturing Details
| Made In | United States |
| Manufacturing City | FLINT |
Dimensions
| Doors | 2-Door |
| Curb Weight | - |
| Gross Vehicle Weight Rating | 7000 pounds |
| Overall Height | - |
| Overall Length | - |
| Overall Width | - |
| Wheelbase Length | - |
| Standard Seating | - |
Engine & Performance
| Engine | 6.6-L V-8 Turbo Diesel |
| Engine Size | 6.6L |
| Engine Cylinders | 8 |
| Transmission | - |
| Transmission Type | - |
| Transmission Speeds | - |
| Drivetrain | Four-Wheel Drive |
Additional Features
| Anti-Brake System | - |
| Steering Type | - |
Pricing
| Manufacturer Suggested Retail Price (MSRP) | - |
| Invoice Price | - |
| Delivery Charges | - |
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What Problems Does the 1986 Chevrolet Military Truck Have?
As these vehicles are military surplus, reported problems often stem from their age, extensive use, and inherent design for utilitarian purposes rather than passenger comfort. A common concern across many years of the M939 series (which includes the 1986 model) is the potential for significant wear and tear on mechanical components. The Cummins NHC 250 engine, while generally robust, can develop issues related to seals, injectors, and turbochargers if not properly maintained. The heavy-duty clutch and transmission can also experience wear over time, leading to shifting problems or slippage.
Rust is a perennial issue for older military vehicles, especially those used in varied climates or near coastal areas. Frame rust, body panel deterioration, and corrosion on critical components like brake lines and fuel tanks are significant concerns that can affect structural integrity and operational safety. The air brake system, while powerful, requires diligent maintenance to prevent leaks and ensure consistent performance; issues with air compressors, valves, and lines are not uncommon.
Electrical systems in older military vehicles can be temperamental. While designed for simplicity, wiring harnesses can degrade, leading to intermittent electrical faults affecting lights, gauges, or ancillary equipment. Batteries, due to the high power demands of starting a diesel engine in extreme temperatures, are also a frequent replacement item.
Recalls specific to military vehicles of this era are less publicly documented than those for civilian vehicles. However, any issues identified during their service life would have been addressed through military maintenance channels. For civilian owners, the long-term reliability hinges heavily on the quality of previous maintenance, the extent of wear, and the diligence of the current owner in addressing potential problems proactively. Owners often report a need for continuous attention to upkeep to keep these trucks in reliable running order, especially when used for demanding tasks or regular driving.
Rust is a perennial issue for older military vehicles, especially those used in varied climates or near coastal areas. Frame rust, body panel deterioration, and corrosion on critical components like brake lines and fuel tanks are significant concerns that can affect structural integrity and operational safety. The air brake system, while powerful, requires diligent maintenance to prevent leaks and ensure consistent performance; issues with air compressors, valves, and lines are not uncommon.
Electrical systems in older military vehicles can be temperamental. While designed for simplicity, wiring harnesses can degrade, leading to intermittent electrical faults affecting lights, gauges, or ancillary equipment. Batteries, due to the high power demands of starting a diesel engine in extreme temperatures, are also a frequent replacement item.
Recalls specific to military vehicles of this era are less publicly documented than those for civilian vehicles. However, any issues identified during their service life would have been addressed through military maintenance channels. For civilian owners, the long-term reliability hinges heavily on the quality of previous maintenance, the extent of wear, and the diligence of the current owner in addressing potential problems proactively. Owners often report a need for continuous attention to upkeep to keep these trucks in reliable running order, especially when used for demanding tasks or regular driving.
How long will the 1986 Chevrolet Military Truck last?
Estimating average mileage for a 1986 Chevrolet Military Truck is challenging as they are often sold with an unspecified number of operational hours or miles accumulated during military service. However, these trucks are built for extreme longevity. With proper and consistent maintenance, the Cummins NHC 250 engine is capable of well over 300,000 miles, and often much more. The chassis and drivetrain are incredibly durable. Weaknesses that emerge over time primarily relate to the cumulative effects of heavy use, exposure to elements (leading to rust), and the aging of rubber and plastic components such as seals, hoses, and bushings. Many of these trucks continue to serve reliably for decades, far exceeding the lifespan of typical civilian vehicles, provided they receive diligent upkeep.
What Technology & Safety Features are Included?
The 1986 Chevrolet Military Truck is decidedly utilitarian, with technology, entertainment, driver-assistance, and safety features being extremely basic by modern standards. Built for functionality and survivability in harsh environments, creature comforts and advanced electronic systems were not priorities during its design and production.
Technology: The technology present is purely mechanical. This includes a robust 4-speed manual transmission (often an Allison automatic in some variants), a two-speed transfer case for 4x4 and 6x6 operation, and a sophisticated air brake system. The instrumentation panel is simple, consisting of essential gauges for engine oil pressure, coolant temperature, fuel level, air pressure, and battery voltage. There are no electronic control units (ECUs) in the modern sense; systems are governed by mechanical linkages and pneumatic controls.
Entertainment: There is no built-in entertainment system. No radios, CD players, or speakers were factory-installed. Owners typically add aftermarket solutions if desired. The primary auditory experience is the rumble of the diesel engine and the sounds of the environment.
Driver-Assistance Features: None of the driver-assistance features common in today's vehicles exist. There are no cruise control, lane departure warnings, blind-spot monitoring, or parking sensors. Driving these trucks requires full driver attention and manual control of all functions.
Safety Features: Safety is primarily addressed through robust construction and the aforementioned air brake system. The reinforced chassis and heavy-duty frame provide significant structural integrity. However, modern safety features like airbags, anti-lock braking systems (ABS), electronic stability control (ESC), and crumple zones are absent. Seatbelts are present but may be basic lap belts in some older models. Crash-test ratings are not applicable, as military vehicles undergo different testing protocols focused on battlefield survivability rather than standardized civilian crash safety. The focus was on occupant protection through sheer mass and ruggedness.
Technology: The technology present is purely mechanical. This includes a robust 4-speed manual transmission (often an Allison automatic in some variants), a two-speed transfer case for 4x4 and 6x6 operation, and a sophisticated air brake system. The instrumentation panel is simple, consisting of essential gauges for engine oil pressure, coolant temperature, fuel level, air pressure, and battery voltage. There are no electronic control units (ECUs) in the modern sense; systems are governed by mechanical linkages and pneumatic controls.
Entertainment: There is no built-in entertainment system. No radios, CD players, or speakers were factory-installed. Owners typically add aftermarket solutions if desired. The primary auditory experience is the rumble of the diesel engine and the sounds of the environment.
Driver-Assistance Features: None of the driver-assistance features common in today's vehicles exist. There are no cruise control, lane departure warnings, blind-spot monitoring, or parking sensors. Driving these trucks requires full driver attention and manual control of all functions.
Safety Features: Safety is primarily addressed through robust construction and the aforementioned air brake system. The reinforced chassis and heavy-duty frame provide significant structural integrity. However, modern safety features like airbags, anti-lock braking systems (ABS), electronic stability control (ESC), and crumple zones are absent. Seatbelts are present but may be basic lap belts in some older models. Crash-test ratings are not applicable, as military vehicles undergo different testing protocols focused on battlefield survivability rather than standardized civilian crash safety. The focus was on occupant protection through sheer mass and ruggedness.
What Colors Options are Available?
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1986 Chevrolet Military Truck Prices and Market Value
The original cost of a 1986 Chevrolet Military Truck to the U.S. military was substantial, likely in the range of tens of thousands of dollars per unit, considering the specialized engineering and robust construction. New prices for civilians were non-existent as they were military assets. Today, used market prices for these trucks vary significantly. You can typically find them ranging from $5,000 to $15,000 for basic, running cargo variants needing restoration, up to $20,000-$30,000 or more for well-maintained, restored, or specialized versions (like dump trucks or wreckers) in excellent condition. Depreciation is minimal, as their value is driven by their rarity, cult following, and utility. Resale value is positively impacted by originality, low accumulated hours/miles, a clean title, functional systems, and the presence of desirable modifications or original military equipment.
1986 Chevrolet Military Truck Cost of Ownership
Owning a 1986 Chevrolet Military Truck is generally not economical. Fuel costs are high, with the diesel engine consuming 5-8 MPG. Insurance can be variable; some standard policies may not cover these specialized vehicles, requiring specialized classic or collector insurance which can be moderate to high depending on coverage. Maintenance and repair are significant cost factors. While robust, parts can be scarce and expensive, often requiring sourcing from surplus dealers or specialized mechanics. Routine maintenance like fluid changes and filter replacements are standard, but potential repairs to the drivetrain, air brakes, or electrical system can be costly. Long-term ownership leans towards costly due to fuel, specialized parts, and the potential for extensive upkeep.
1986 Chevrolet Military Truck Fuel Efficiency
Fuel Type
Diesel
Fuel Capacity
-
City Mileage
-
Highway Mileage
-
1986 Chevrolet Military Truck Warranty
Basic
Original warranty
0 months / No data
Estimated remaining
Expired
Powertrain
Original warranty
0 months / No data
Estimated remaining
Expired
Rust
Original warranty
0 months / No data
Estimated remaining
Expired
1986 Chevrolet Military Truck Insurance
Insurance for a 1986 Chevrolet Military Truck is moderately priced, reflecting its status as a Pickup Truck with strong safety ratings and
reasonable repair costs.
reasonable repair costs.
How Does the 1986 Chevrolet Military Truck Compare to Other Pickup Truck?
The 1986 Chevrolet Military Truck (M939 series) occupies a unique niche, making direct rivals from civilian markets difficult to pinpoint, as its purpose is extreme utility and off-road capability. However, if we consider heavy-duty off-road vehicles or large utility trucks, some comparisons can be made.
Performance: In terms of raw off-road performance, speed, and maneuverability, few civilian vehicles can match the M939's 6x6 capability and ground clearance. Civilian heavy-duty trucks like a Ford F-750 or Sterling Acterra, while capable of hauling similar loads, would struggle significantly in the extreme terrain the M939 is designed for. Off-road focused trucks like dedicated military surplus Jeeps or specialized expedition vehicles might offer comparable off-road prowess but lack the sheer cargo capacity.
Features: The M939 is vastly outmatched in features by any modern civilian vehicle. It has no creature comforts, advanced electronics, or safety aids. Civilian heavy-duty trucks offer power steering, air conditioning, infotainment systems, and comprehensive safety suites. Its primary feature is its unparalleled ruggedness and mechanical simplicity.
Reliability: The M939's reliability is highly dependent on maintenance and condition. When well-maintained, its mechanical simplicity makes it very reliable in basic operation. However, finding readily available parts and qualified mechanics can be a challenge. Civilian heavy-duty trucks generally offer better long-term parts availability and dealer support, making them more reliably serviceable for everyday use. Smaller military surplus vehicles like the older M35 deuce-and-a-half might be considered similar in spirit but with less capacity.
Price: The M939 series generally offers exceptional value for its capability, especially when purchased at auction. Prices for functional examples are often lower than comparable civilian trucks with similar hauling capacity, though the operational costs (fuel, maintenance) can be higher. Comparable civilian heavy-duty trucks, especially newer models, will command significantly higher prices.
Alternatives: For those seeking immense hauling and off-road capability, similar military surplus trucks like the older M35 series (2.5-ton) offer a lighter-duty, less expensive option. For those needing heavy hauling on-road with some off-road capability, a used heavy-duty commercial truck (e.g., Peterbilt, Kenworth, Sterling) might be a more practical, though less rugged, choice. For purely off-road adventure with less cargo focus, specialized expedition vehicles or heavily modified 4x4 trucks are alternatives.
Performance: In terms of raw off-road performance, speed, and maneuverability, few civilian vehicles can match the M939's 6x6 capability and ground clearance. Civilian heavy-duty trucks like a Ford F-750 or Sterling Acterra, while capable of hauling similar loads, would struggle significantly in the extreme terrain the M939 is designed for. Off-road focused trucks like dedicated military surplus Jeeps or specialized expedition vehicles might offer comparable off-road prowess but lack the sheer cargo capacity.
Features: The M939 is vastly outmatched in features by any modern civilian vehicle. It has no creature comforts, advanced electronics, or safety aids. Civilian heavy-duty trucks offer power steering, air conditioning, infotainment systems, and comprehensive safety suites. Its primary feature is its unparalleled ruggedness and mechanical simplicity.
Reliability: The M939's reliability is highly dependent on maintenance and condition. When well-maintained, its mechanical simplicity makes it very reliable in basic operation. However, finding readily available parts and qualified mechanics can be a challenge. Civilian heavy-duty trucks generally offer better long-term parts availability and dealer support, making them more reliably serviceable for everyday use. Smaller military surplus vehicles like the older M35 deuce-and-a-half might be considered similar in spirit but with less capacity.
Price: The M939 series generally offers exceptional value for its capability, especially when purchased at auction. Prices for functional examples are often lower than comparable civilian trucks with similar hauling capacity, though the operational costs (fuel, maintenance) can be higher. Comparable civilian heavy-duty trucks, especially newer models, will command significantly higher prices.
Alternatives: For those seeking immense hauling and off-road capability, similar military surplus trucks like the older M35 series (2.5-ton) offer a lighter-duty, less expensive option. For those needing heavy hauling on-road with some off-road capability, a used heavy-duty commercial truck (e.g., Peterbilt, Kenworth, Sterling) might be a more practical, though less rugged, choice. For purely off-road adventure with less cargo focus, specialized expedition vehicles or heavily modified 4x4 trucks are alternatives.
Final Verdict: Is the 1986 Chevrolet Military Truck a Good Pickup Truck?
The 1986 Chevrolet Military Truck is ideal for off-road enthusiasts, collectors, homesteaders, or those requiring extreme hauling and towing capacity for specialized, non-routine tasks. It's not a daily driver; its value lies in its robust construction, go-anywhere capability, and sheer presence. It is worth buying if you understand and embrace its limitations: high fuel consumption, basic comfort, and potentially significant maintenance. Buying a used example is the only option. Look for trucks with documented maintenance history and in the best possible condition to mitigate immediate repair costs. Specialized variants like dump trucks or wreckers offer enhanced utility. For the right buyer with the right expectations and a willingness to maintain it, it's an unparalleled, character-filled machine.
Drew B
Drew is a seasoned automotive expert and contributor to VinCheck.info. With nearly 15 years of experience as a former Porsche technician, he brings a wealth of hands-on knowledge to his writing. Born in North Carolina, a region renowned for its deep-rooted NASCAR culture, Drew developed a passion for cars early in life, often building and working on vehicles from a young age. At VINCheck, Drew leverages his extensive technical background to provide in-depth analyses of various vehicles. His articles often focus on engine performance, reliability, and maintenance insights, offering readers practical information grounded in real-world experience. Some of his notable contributions include reviews on the Mazda CX-5's longevity and detailed examinations of engine options for models like the 2011 Toyota Camry and Tacoma