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1978 Chevrolet G20 1978 Sportvan Standard Passenger Van

Repair services & inexpensive new parts for 1978 Chevrolet G20 1978 Sportvan Standard Passenger Van with 5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated engine.

The 1978 Chevrolet G20 Sportvan is a classic standard passenger van featuring a robust 5.7L 350 cubic inch V8 engine with an overhead valve (OHV) configuration and naturally aspirated fuel delivery. This rear-wheel-drive (RWD) van was designed for versatility and reliability, making it a popular choice for both personal and commercial use. With its spacious interior and durable construction, the G20 Sportvan offers a solid balance of power and practicality, suited for long-distance travel or as a workhorse for various hauling needs.

Common Issues

  • Engine oil leaks due to aging gaskets and seals.
  • Cooling system issues, primarily from radiator or hose wear.
  • Brake wear, including drum brakes common in older models.
  • Rust on the body, especially around wheel wells and undercarriage.

Maintenance Tips

  • Regularly check and replace engine oil and filters every 3,000 miles.
  • Inspect cooling system components, such as the radiator and hoses, for leaks or cracks.
  • Lubricate chassis and suspension components to maintain smooth operation.
  • Regularly inspect brakes and replace worn pads and drums as necessary.

Typical Repair/Ownership Cost Ranges

  • Engine Repairs: $500 - $2,500 depending on severity.
  • Brake Replacement: $150 - $600 for parts and labor.
  • Cooling System Repairs: $200 - $800, including radiator replacement.
  • Body Rust Repair: $300 - $1,500 depending on extent and location.

Buying Advice

  • Inspect for rust, particularly in the undercarriage and wheel wells.
  • Check the engine for oil leaks and listen for unusual noises during operation.
  • Test drive to assess the condition of brakes and suspension.
  • Review maintenance records to ensure regular servicing.

FAQ

  • What is the fuel economy of the 1978 Chevrolet G20 Sportvan? The fuel economy is generally low, averaging around 10-14 mpg, typical of large V8 engines from this era.
  • How much can the G20 Sportvan tow? When properly equipped, it can tow up to 6,000 pounds.
  • What type of oil is recommended for the 5.7L V8 engine? A 10W-30 conventional oil is commonly recommended for this vintage engine.
  • Are parts readily available for the 1978 G20 Sportvan? Many parts are still available through specialized classic car parts suppliers, though some may require searching or custom fabrication.
  • Does the van have any modern safety features? No, the 1978 model lacks modern safety features beyond basic seat belts.
  • Is the G20 Sportvan easy to work on for amateur mechanics? Yes, its straightforward design and mechanical systems make it accessible for those with basic mechanical knowledge.

Have Questions about Chevrolet G20 1978 Sportvan? Ask the assistant for questions about mileage, performance, repairs, parts, recommended maintenance and more.


Make: Chevrolet
Model: G20
Trim: Sportvan Standard Passenger Van 3-Door
Year: 1978

Quick Info

Fuel: GAS
Aspiration: Naturally Aspirated
Engine Displacement: 5.7L
Engine CC: N/A
Engine CID: 350
Engine Block Type: V
Cylinder Type: OHV
Cylinders: 8
Drive: RWD
Body Type: Standard Passenger Van
Doors: 3

Repair services & inexpensive new parts for 1978 Chevrolet G20 1978 Sportvan Standard Passenger Van with 5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated engine.