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1981 Chevrolet K5 Blazer 1981 Custom Sport Utility

Repair services & inexpensive new parts for 1981 Chevrolet K5 Blazer 1981 Custom Sport Utility with 4.1L 250Cu. In. l6 GAS OHV Naturally Aspirated engine.

The 1981 Chevrolet K5 Blazer is a classic sport utility vehicle that combines ruggedness with versatility. Powered by a 4.1L (250 CID) inline-six engine, this model features rear-wheel drive and an overhead valve (OHV) configuration. Known for its robust design, the K5 Blazer offers a spacious interior and off-road capabilities, making it a popular choice among enthusiasts. However, like many vintage vehicles, it may require specific repairs and maintenance to keep it in excellent condition, especially concerning its engine and drivetrain.

Common Issues

  • Rust on the body and frame, particularly in the wheel wells and undercarriage.
  • Fuel system issues, including clogged fuel filters and aging fuel lines.
  • Cooling system problems, such as radiator leaks and thermostat failures.
  • Electrical issues, especially with the wiring harness and old connectors.

Maintenance Tips

  • Regularly check and change the oil to maintain engine health.
  • Inspect and replace the air filter as needed to ensure optimal performance.
  • Monitor tire condition and pressure to enhance safety and fuel efficiency.
  • Flush and refill the cooling system periodically to prevent overheating.

Typical Repair/Owership Cost Ranges

  • Routine maintenance (oil change, filters, etc.): $50 - $150
  • Brake system repairs (pads, rotors): $200 - $600
  • Cooling system repairs (radiator, hoses): $100 - $400
  • Complete engine rebuild: $1,500 - $3,500

Buying Advice (What to Inspect)

  • Inspect the frame and body for rust and structural integrity.
  • Check the engine for leaks and listen for unusual noises.
  • Test the brakes and suspension for responsiveness and wear.
  • Review the vehicle's maintenance history for any major repairs or issues.

Frequently Asked Questions

  • What is the fuel efficiency of the 1981 Chevrolet K5 Blazer? The fuel efficiency typically ranges from 10 to 15 miles per gallon, depending on driving conditions.
  • What type of oil should I use for the 4.1L engine? It is recommended to use a high-quality 10W-30 motor oil.
  • Are parts readily available for the 1981 K5 Blazer? Yes, many parts are available through specialty retailers and online marketplaces.
  • How often should I service the cooling system? It is advisable to flush the cooling system every 2 years or 30,000 miles.
  • Can I convert my K5 Blazer to four-wheel drive? Yes, but it requires significant modifications and parts replacement.
  • What is the average resale value of a 1981 K5 Blazer? Resale values can vary widely but typically range from $5,000 to $15,000 based on condition and modifications.
  • How do I check for rust on the K5 Blazer? Inspect under the vehicle, around the wheel wells, and inside the doors for any signs of rust or corrosion.
  • What common upgrades are recommended for the K5 Blazer? Popular upgrades include improved suspension systems, modern fuel systems, and enhanced braking components.

Have Questions about Chevrolet K5 Blazer 1981 Custom? Ask the assistant for questions about mileage, performance, repairs, parts, recommended maintenance and more.


Make: Chevrolet
Model: K5 Blazer
Trim: Custom Sport Utility 2-Door
Year: 1981

Quick Info

Fuel: GAS
Aspiration: Naturally Aspirated
Engine Displacement: 4.1L
Engine CC: N/A
Engine CID: 250
Engine Block Type: L
Cylinder Type: OHV
Cylinders: 6
Drive: RWD
Body Type: Sport Utility
Doors: 2

Repair services & inexpensive new parts for 1981 Chevrolet K5 Blazer 1981 Custom Sport Utility with 4.1L 250Cu. In. l6 GAS OHV Naturally Aspirated engine.