1973-1987 Chevy C/K Square Body
$15,000-80,000+ Truck Chevy Modern Classic Era

1973-1987 Chevy C/K Square Body

1973-1987

Why this vehicle matters

The Chevrolet Square Body is the last old-school American truck — simple, solid, and infinitely fixable. The design ran for 14 years with only incremental changes, which means parts interchange across the entire run. The square styling that gives these trucks their nickname was revolutionary in 1973 and still looks purposeful today. They were workhorses when new, and the survivors are either beat to hell or lovingly maintained. The K-series 4x4 trucks, especially short-bed models, have become the hottest segment in the collector truck market. A clean 1987 K10 Silverado can sell for more than it cost new, adjusted for inflation.

Patina notes

These trucks age honestly. Original two-tone paint schemes with surface rust and patina look period-correct. The chrome bumpers pit but rechrome well. Watch for cab corner rust, rocker panels, and the area behind the rear wheels — these are the killers. A truck with good body panels and rusty frame can be saved; a truck with rusty body panels is expensive to repair. The 4x4 trucks command premiums but also have more wear points. The diesel models (6.2L) are rare and increasingly sought after.

Ownership reality

This is the most DIY-friendly truck ever made. Every mechanical system is simple, documented, and replaceable with hand tools. The 350 small-block is the most supported engine in automotive history. LMC Truck and Classic Industries have complete catalogs. The TH350 and TH400 transmissions are bulletproof. Modern upgrades — fuel injection, disc brakes, modern stereos — install easily without permanent modification. These trucks are also still working trucks in rural America, so mechanics know them intimately.

The verdict

Buy if

You want the last simple American truck. You appreciate parts availability and DIY serviceability. You want a vehicle that looks cool and can still haul a load of lumber.

Skip if

You need modern fuel economy or safety features. You want a truck that's comfortable on long highway drives. You're looking for investment potential over practical use.

What to look for

  • Cab corners and rocker panels (rust hot spots)
  • Frame rust at rear spring hangers and body mounts
  • Floor pans under carpet and rubber mats
  • Rear wheel well rust from road spray
  • Transfer case condition on 4x4 models
  • Original versus rebuilt 700R4 transmission (later models)
  • Fuel tank condition (behind seat or in-bed)

Common problems

  • Cab corner rust is nearly universal
  • Door hinge pins wear causing sag
  • Speedometer gears fail
  • Power steering box leaks
  • Carburetor issues with ethanol fuel
  • 700R4 transmission problems (1982+)

Parts & community

Parts sources

  • LMC Truck
  • Classic Industries
  • National Parts Depot (NPD)
  • Summit Racing
  • Mar-K Specialties

Forums & communities

  • GM Square Body Forums
  • 73-87 Chevy Trucks Forum
  • StealBlue73.com
  • ChevyTalk.com

Sources

Specifications

Engine 250 I6 / 305 V8 / 350 V8 / 454 V8
Power 100-245 hp
Torque 175-380 lb-ft
Transmission 3-speed manual / 4-speed manual / TH350 auto / TH400 auto
Drivetrain RWD (C series) / 4WD (K series)
Weight 3,800-5,500 lbs
Wheelbase 117.5-164.5 inches
Production Millions

Notable Features

  • Square body styling
  • Independent front suspension (2WD)
  • Solid front axle (4WD)
  • 14-year production run

About Chevy

Ford's eternal rival. The bowtie that launched a thousand hot rods.

View all Chevy vehicles →

Find one

Looking to buy? Search current and past listings on Bring a Trailer.

Search on Bring a Trailer →

More from Chevy

1960-1966 Chevy C10

1960-1966 Chevy C10

$25,000-80,000+ Truck
Engine: 235 I6
Power: 140-220 hp
Trans: 3-speed manual
Years: 1960-1966

The 1960-66 Chevrolet C10 is the truck that made pickups cool. Before this generation, trucks were strictly utilitarian. GM's designers gave this truck car-like styling — the wraparound windshield, sweeping fender lines, and available Custom Cab interior made it something you'd want to drive, not just need to drive. The drop-center frame lowered the floor height for easier entry. The optional V8 engines made them quick. These trucks launched the custom truck scene that continues today. A well-built 1966 C10 was the truck every high schooler in America wanted.

1967 Chevy Corvette C2 Stingray

1967 Chevy Corvette C2 Stingray

$60,000-200,000+ Car
Engine: 327 V8
Power: 300-435 hp
Trans: 3-speed auto
Years: 1963-1967

The C2 Corvette is America's sports car at its most beautiful. The 1963-67 'mid-year' generation introduced the Stingray name, the split rear window (1963 only), and some of the most stunning automotive styling ever committed to fiberglass. By 1967, the final year, Chevrolet had refined the car's quirks while adding the monstrous 427 big-block option. The result was a sports car that could humiliate European exotics on both the track and the street. The L88 racing engine option — aluminum heads, 12.5:1 compression, and a factory-rated 430 hp that was actually closer to 560 — is one of the most valuable engines ever installed in a production car.

1967-1972 Chevy C10

1967-1972 Chevy C10

$25,000-60,000 Truck
Engine: 250 I6
Power: 155-325 hp depending on engine
Trans: 3-speed manual
Years: 1967-1972

The '67-72 C10 is the canonical classic truck. The Action Line redesign cleaned up the bulbous '60-66 look into something timeless. It's the truck in every truck commercial when they want to evoke authenticity. The square body that followed ('73-87) is also cool, but these are the ones that launched the restomod movement. LS swaps, air ride, patina paint — the C10 is to trucks what the '32 Ford is to hot rods: the canvas everyone starts with.

1969 Chevy Camaro SS/Z28

1969 Chevy Camaro SS/Z28

$45,000-150,000+ Car
Engine: 350 V8 (Z28)
Power: 290-430 hp depending on package
Trans: 3-speed auto
Years: 1969

The '69 Camaro is GM's answer to the Mustang, perfected. The 1967-68 cars were good; the '69 is great. The redesigned body added aggression without losing elegance. The Z28 became a legitimate race car for the street — the 302 V8 was designed specifically to dominate Trans-Am racing. The SS 396 put big-block power in a car that could actually handle it. And the COPO 427 cars, ordered through dealer back channels to bypass GM's ban on engines over 400 cubic inches in intermediate cars, are now worth six figures. This is the Camaro that defined what a Camaro should be.

1970 Chevy Chevelle SS 454

1970 Chevy Chevelle SS 454

$50,000-200,000+ Car
Engine: 396 V8
Power: 350-450 hp
Trans: 3-speed auto (TH400)
Years: 1970-1972

The 1970 Chevelle SS 454 is the apex predator of the muscle car era. When GM lifted its 400 cubic inch displacement limit, Chevrolet responded with the LS6 454 — 450 horsepower, 500 lb-ft of torque, and a factory 0-60 time under six seconds. The redesigned body was aggressive and purposeful. The hood scoop actually worked. For one glorious year before insurance rates and emissions killed muscle cars, the LS6 Chevelle was the most powerful production car you could buy. The LS5 (360 hp) was the 'mild' option. Nothing about this car is mild.

1975 Chevy G20 Van

1975 Chevy G20 Van

$5,000-25,000 Van
Engine: 250ci inline-6
Power: 105-175 hp depending on engine and year
Trans: 3-speed auto (TH350)
Years: 1971-1995

The G-Series van defined what a full-size American van should be for 25 years. The second-generation design ran from 1971 to 1995 with minimal changes, proving that sometimes you get it right the first time. The G20 became the platform for the entire custom van industry — shag carpet, bubble windows, and murals of wizards on the sides. But underneath the conversions was a solid, reliable truck that could haul, tow, and work. The G-Series was America's utility vehicle.

1976 Chevy Chevette

1976 Chevy Chevette

$2,000-8,000 Car
Engine: 1.4L OHV inline-4
Power: 52-65 hp depending on engine and year
Trans: 4-speed manual
Years: 1976-1987

The Chevette was GM's white flag to the imports. After watching Japanese cars steal market share, GM finally built a proper subcompact — by copying what worked. The Chevette was adequate. That's it. Not good, not terrible, just adequate. It did what millions of Americans needed: basic transportation. The RWD layout was archaic even then, but it made the car simple and somewhat fun in snow. The Chevette is the car nobody loved but everybody accepted.