1973 To 1987 Chevy Trucks For Sale: Your Comprehensive Guide to the Iconic Square Body Era

1973 To 1987 Chevy Trucks For Sale: Your Comprehensive Guide to the Iconic Square Body Era pickup.truckstrend.com

For enthusiasts, collectors, and practical drivers alike, the Chevrolet trucks produced between 1973 and 1987 hold a special place in automotive history. Affectionately known as "Square Bodies" due to their distinctive, angular styling, these trucks represent a golden age of American utility, ruggedness, and timeless design. Far more than just utilitarian vehicles, they have evolved into highly sought-after classics, offering a blend of nostalgic appeal, mechanical simplicity, and surprising versatility. Whether you’re looking for a dependable workhorse, a weekend cruiser, a restoration project, or an investment, diving into the world of 1973-1987 Chevy trucks for sale opens up a wealth of possibilities. This comprehensive guide will equip you with the knowledge needed to navigate the market, identify a good buy, and understand what it takes to own one of these enduring icons.

The Enduring Appeal of the Square Body Era (1973-1987)

1973 To 1987 Chevy Trucks For Sale: Your Comprehensive Guide to the Iconic Square Body Era

The 1973-1987 Chevrolet C/K series, often referred to as the "Rounded-Line" generation by GM but universally known as the "Square Body," marked a significant departure from previous designs. Introduced in 1973, these trucks were larger, more comfortable, and more aerodynamic than their predecessors, despite their boxy appearance. They offered a range of innovations for their time, including full-time four-wheel drive, extended cabs (introduced in 1973), and even a diesel engine option later in the production run.

Their appeal today stems from several key factors:

• Timeless Design: The clean lines and robust stance of the Square Body trucks have aged remarkably well, standing out in an era of increasingly complex vehicle designs.
• Mechanical Simplicity: Largely devoid of complex electronics, these trucks are relatively easy to work on, making them ideal for DIY mechanics and those seeking a vehicle that can be maintained without specialized tools.
• Durability and Reliability: Built to last, many Square Bodies have accumulated hundreds of thousands of miles, testament to their inherent toughness.
• Versatility: From basic work trucks to luxurious Blazers and Suburbans, the platform offered configurations for almost any need, making them adaptable for modern uses, from towing to off-roading to daily driving.
• Strong Aftermarket Support: The popularity of these trucks ensures a robust supply of new and used parts, making restoration and modification straightforward.



• Investment Potential: Well-maintained or restored examples are steadily appreciating in value, making them not just a hobby but potentially a sound investment.

Key Models and Variations

The 1973-1987 Chevy truck line was incredibly diverse, offering a range of options to suit various needs. Understanding these variations is crucial when searching for a truck.

• C/K Series Pickups:

  • C-Series: Two-wheel drive (2WD) models.
  • K-Series: Four-wheel drive (4WD) models.

  

  • Weight Classes:
    • 10-series (C10/K10): Half-ton trucks, most common and popular for daily driving and light hauling. Often sought after for custom builds.
    • 20-series (C20/K20): Three-quarter-ton trucks, designed for heavier loads and towing. More robust suspension and drivetrain components.
    • 30-series (C30/K30): One-ton trucks (also known as C3500/K3500 in later years), the heaviest duty, often with dual rear wheels (duallies) for maximum towing and hauling capacity.
  • Cab Configurations:
    • Regular Cab: Standard two-door cab.
    • Extended Cab (Club Cab/Bonus Cab): Introduced in 1973, offering limited rear seating or extra storage space.
    • Crew Cab: Four-door configuration, providing full rear seating, ideal for families or work crews. Less common and highly desirable.
  • Bed Lengths: Short bed (typically 6.5 feet) and long bed (typically 8 feet). Short bed trucks are often preferred for their aesthetics and maneuverability.

• K5 Blazer: The full-size SUV variant, essentially a shortened K10 chassis with a removable fiberglass top. Highly popular for off-roading and cruising, especially the early "full convertible" models (1973-1975).

• Suburban: The full-size wagon, available in C and K series, offering three rows of seating and immense cargo space. A favorite for families and adventurers, often converted into overland vehicles.

Engine and Transmission Options

The powertrain options for Square Bodies were robust and varied, contributing to their reputation for reliability.

• Gasoline Engines (Small Block & Big Block Chevy):

  • 250 CID I6: The inline-six was a durable, economical option, though less powerful.
  • 305 CID V8: A common V8, offering a balance of power and efficiency, especially in later years.
  • 350 CID V8 (5.7L): The ubiquitous Small Block Chevy, the most popular and versatile engine. Known for its legendary reliability, ease of maintenance, and massive aftermarket support. It’s the go-to engine for performance upgrades.
  • 400 CID V8: A larger small block, offering more torque than the 350.
  • 454 CID V8 (7.4L): The Big Block Chevy, found in heavier-duty trucks (20- and 30-series) and some K5 Blazers/Suburbans. Offers immense power and torque, ideal for heavy towing, but with significantly worse fuel economy.

• Diesel Engines:

  • 6.2L Detroit Diesel V8: Introduced in 1982, this naturally aspirated diesel offered better fuel economy than the gas V8s but was less powerful and could be prone to certain issues if not maintained properly.

• Transmissions:

  • Manual:
    • SM465 (4-speed): A legendary "granny low" transmission, incredibly tough and reliable, found in many 4WD and heavy-duty trucks.
    • Saginaw 3-speed/4-speed, Muncie 4-speed: Less common in later years, typically found in lighter-duty models.
  • Automatic:
    • TH350 (3-speed): Common in lighter-duty trucks, known for its simplicity and durability.
    • TH400 (3-speed): Heavier-duty automatic, found in Big Block trucks and K20/K30 models, virtually indestructible.
    • 700R4 (4-speed with overdrive): Introduced in 1982, offering better fuel economy due to its overdrive gear. It’s a popular upgrade for earlier trucks.

What to Look For When Buying: An Inspection Guide

Purchasing a vintage truck requires a careful eye. Rust, deferred maintenance, and hidden damage are common. Here’s a comprehensive checklist:

1. Rust: This is the #1 enemy of Square Bodies.

   • Cab Corners: Check inside and outside, often the first place to rot.
   • Rocker Panels: Below the doors, prone to rust.
   • Fenders: Especially around the wheel wells and where they meet the cab.
   • Bed: Look inside the bed, floor supports, and bed sides. Pay attention to the areas where the bed meets the cab.
   • Doors: Lower edges and hinges.
   • Windshield/Rear Window Frames: Rust here can lead to leaks and structural issues.
   • Frame: Inspect the entire frame for cracks, bends, or significant rust. While surface rust is common, deep, flaking rust is a red flag.
   • Floor Pans: Check under the carpet and floor mats.

2. Engine and Drivetrain:

   • Leaks: Look for oil, coolant, or transmission fluid leaks.
   • Startup: Listen for abnormal noises (knocks, ticks, excessive smoke).
   • Idle: Should be smooth and consistent.
   • Test Drive:
     • Engine Performance: Does it accelerate smoothly? Any hesitation or loss of power?
     • Transmission: Shifts smoothly? No slipping or hard shifts (automatics). Clutch engages smoothly (manuals).
     • 4WD (if applicable): Engage 4WD high and low. Does it work? Any clunks or grinding?

3. Suspension, Steering, and Brakes:

   • Steering: Excessive play in the steering wheel, wandering on the road.
   • Suspension: Sagging, unusual noises (squeaks, clunks) over bumps. Check shocks, leaf springs, and control arm bushings.
   • Brakes: Pulling to one side, spongy pedal, grinding noises.

4. Interior:

   • Seat Condition: Tears, worn upholstery.
   • Dashpad: Cracks are common due to sun exposure.
   • Gauges: Do all gauges work? (Fuel, temp, oil pressure, speedometer).
   • Electrical: Test all lights, wipers, horn, radio, and HVAC (heater/AC). AC systems often need work.

5. Tires and Wheels: Check tire condition, tread depth, and uneven wear (can indicate alignment or suspension issues).

6. Documentation: A clear title is essential. Service records, if available, can provide valuable insight into the truck’s history.

Restoration vs. Daily Driver: Making the Choice

When considering a 1973-1987 Chevy truck, you’ll likely fall into one of two camps:

• Daily Driver/Reliable Workhorse: You want a truck that starts every day, is mechanically sound, and can perform its intended duties without constant attention. These trucks might have cosmetic imperfections but are solid mechanically. Expect to pay more for a well-maintained example.
• Restoration Project: You’re looking for a truck to bring back to its former glory, or customize extensively. This can range from a running project needing cosmetic work to a "parts truck" that requires a full frame-off restoration. These are cheaper upfront but demand significant time, money, and skill.

Practical Advice: For a daily driver, prioritize mechanical soundness over cosmetics. For a restoration, look for a solid frame and minimal rust in critical structural areas, as extensive rust repair can be more costly than an engine rebuild. Always factor in the cost of potential repairs and upgrades.

Common Upgrades and Modifications

The Square Body platform is a favorite for customization, thanks to its simplicity and vast aftermarket support.

• Engine Swaps: Popular upgrades include modern LS-series V8s for power and fuel efficiency, or a more robust carbureted 350/454.
• Fuel Injection Conversion: Swapping from a carburetor to an aftermarket EFI system significantly improves cold starts, fuel economy, and drivability.
• Suspension Upgrades: Lifting kits for off-roading, lowering kits for street performance/aesthetics, or complete air ride systems.
• Brake Improvements: Upgrading to disc brakes all around (many came with front discs, rear drums) or larger rotors/calipers for better stopping power.
• Transmission Swaps: Installing a 700R4 or a modern 4L60E/4L80E for overdrive, or a stronger manual transmission like the NV4500.
• Modern Amenities: Adding aftermarket air conditioning, power windows, central locking, or modern audio systems.
• Cosmetic Enhancements: Custom paint, wheels, LED lighting, interior refreshes.

Challenges and Solutions

Owning an older vehicle comes with its unique set of challenges:

• Fuel Economy: Especially with larger V8s, fuel consumption can be significant.
  • Solution: Consider an EFI conversion, ensure the engine is well-tuned, or opt for a diesel model (though finding parts for the 6.2L can be harder).
• Safety Features: Lacking modern airbags, ABS, and stability control.
  • Solution: Drive defensively, ensure brakes and steering are in top condition, consider seatbelt upgrades, and educate yourself on defensive driving.
• Rust: An ongoing battle in many climates.
  • Solution: Thorough pre-purchase inspection, regular cleaning, rust proofing, and prompt repair of any new rust spots.
• Maintenance: Older vehicles require more frequent checks and proactive maintenance.
  • Solution: Adhere to a strict maintenance schedule, learn basic mechanics, or find a trustworthy mechanic familiar with vintage vehicles.

Price Guide: 1973-1987 Chevy Trucks For Sale

Prices for 1973-1987 Chevy trucks vary wildly based on condition, model, engine, originality, and location. The table below provides a general range for common models, but always remember that market value is subjective and can fluctuate.

Model Type	Condition: Parts/Project (Non-Running/Heavy Rust)	Condition: Running Driver (Fair Cosmetics/Good Mech.)	Condition: Good Condition (Minor Flaws/Solid)	Condition: Restored/Show Quality (Excellent/Custom)
C10 (2WD Short Bed)	$1,500 – $4,000	$6,000 – $15,000	$16,000 – $30,000	$35,000 – $70,000+
K10 (4WD Short Bed)	$2,000 – $5,000	$8,000 – $18,000	$20,000 – $35,000	$40,000 – $80,000+
C10/K10 (Long Bed)	$1,000 – $3,000	$4,000 – $10,000	$12,000 – $25,000	$28,000 – $55,000+
K5 Blazer (4WD)	$3,000 – $7,000	$10,000 – $25,000	$28,000 – $45,000	$50,000 – $100,000+
Suburban (C/K)	$2,000 – $5,000	$7,000 – $18,000	$18,000 – $30,000	$35,000 – $65,000+
C20/K20 (3/4-Ton)	$1,000 – $3,500	$5,000 – $12,000	$13,000 – $28,000	$30,000 – $60,000+
C30/K30 (1-Ton Dually)	$1,500 – $4,000	$6,000 – $15,000	$16,000 – $30,000	$35,000 – $70,000+
Crew Cab (C/K)	$2,500 – $6,000	$9,000 – $20,000	$22,000 – $40,000	$45,000 – $90,000+

Note: Prices are estimates and can fluctuate based on specific year, engine, transmission, options, geographic location, and seller motivation. Rare configurations (e.g., specific factory paint, highly optioned models, low mileage originals) can command significantly higher prices.

Frequently Asked Questions (FAQ)

Q: Are 1973-1987 Chevy trucks reliable for daily driving?
A: Yes, many Square Bodies are still daily driven today. Their mechanical simplicity makes them easy to maintain. However, they are old vehicles and will require more frequent and proactive maintenance than a modern truck. Factors like rust, original engine condition, and previous maintenance history play a huge role.

Q: What’s the best engine for a Square Body?
A: The 350 Small Block Chevy (5.7L) is arguably the best balance of power, reliability, and aftermarket support. If you need maximum towing power, the 454 Big Block is superior. For fuel economy, the 6.2L Diesel or a modern LS swap are options.

Q: Is rust a major issue with these trucks?
A: Absolutely. Rust is the most common and significant problem. Pay close attention to cab corners, rocker panels, fenders, and the bed. A rust-free example, especially from a dry climate, will command a premium.

Q: Are parts readily available for these trucks?
A: Yes, parts availability is excellent. Due to their popularity, numerous aftermarket companies produce reproduction body panels, interior components, mechanical parts, and performance upgrades. Salvage yards are also a good source for used parts.

Q: What should I budget for a decent, running Square Body?
A: For a good, running driver that you can hop in and enjoy without immediate major repairs, expect to spend anywhere from $8,000 to $20,000, depending on the model and condition. Show-quality or highly customized examples can easily exceed $40,000-$100,000.

Q: Can I put a modern engine (like an LS) in a Square Body?
A: Yes, LS swaps are incredibly popular due to their power, fuel efficiency, and reliability. There’s a huge aftermarket for swap kits, making the process relatively straightforward for those with mechanical experience.

Q: What’s the difference between a C10 and a K10?
A: The "C" denotes a two-wheel drive (2WD) truck, while "K" denotes a four-wheel drive (4WD) truck. The "10" refers to the half-ton weight class.

Q: Are they good for towing?
A: Yes, especially the 3/4-ton (C20/K20) and 1-ton (C30/K30) models. With a robust frame and powerful V8 engines (especially the 454), they were designed for heavy hauling. Even a well-equipped C10 can handle light to moderate towing.

Conclusion

The 1973 to 1987 Chevy trucks represent a pinnacle of American truck design and engineering. Their rugged durability, straightforward mechanics, and iconic "Square Body" styling have cemented their place as highly desirable classics. Whether you’re seeking a nostalgic trip back in time, a practical workhorse, or a canvas for a custom build, the market for these trucks offers a wide array of options. By understanding the different models, knowing what to look for during inspection, and being prepared for the realities of owning a vintage vehicle, you can confidently embark on your journey to find the perfect Square Body. Owning one of these trucks is more than just transportation; it’s an experience, a connection to automotive heritage, and a testament to enduring American craftsmanship.