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What is the wheelbase of a 1978 Chevy Van?

The wheelbase of a 1978 Chevrolet van varied by configuration, with two common lengths: 110 inches for the short-wheelbase version and 125 inches for the long-wheelbase version.


Context: The 1978 GM full-size van lineup


In 1978, Chevrolet’s full-size G-series vans were produced in cargo, passenger, and specialized configurations. The wheelbase length depended on the specific model and factory options, influencing interior space, payload, and handling. While two primary lengths were common, exact figures could vary with conversions or optional equipment.


Common wheelbase lengths


Below are the typical factory wheelbase lengths used in the 1978 van lineup, noting which configurations they most often corresponded to.



  1. Short wheelbase: 110 inches (approximately 9 feet 2 inches).

  2. Long wheelbase: 125 inches (approximately 10 feet 5 inches).


Note: Exact wheelbase can vary by model and year, and conversion or aftermarket modifications may alter the original dimension. Always verify via the vehicle's data plate or OEM documentation.


Impact of wheelbase on use and handling


Short-wheelbase vans typically offer a tighter turning radius and lighter handling, making them more maneuverable in city driving or tighter spaces. Long-wheelbase variants deliver more interior cargo or passenger space and can provide greater straight-line stability on highways, at the cost of a larger turning footprint. The choice between the two depended on the intended use, whether for cargo, passenger transport, or specialized conversions.


Summary


For a 1978 Chevy van, the two primary wheelbase lengths were 110 inches (short) and 125 inches (long). Confirm the exact measurement for a specific vehicle using its VIN data plate or factory documentation.

What are the specs of a 1978 Chevy c65?


The 1978 Chevy C65's specifications varied, but common features included a standard GM V8 gasoline engine, a 5-speed transmission, and spring suspension. Engine options included the 366 cu in V8 (220 HP) or the 427 cu in V8. GVWRs were commonly around 27,500 lbs for single-axle models or higher for tandem axle versions, with front axles typically around 7,000–9,000 lbs and rear axles around 16,160–18,500 lbs for single-axle configurations.
 
You can watch this video to see a 1978 Chevy C65 grain truck in operation: 40sDavid PfisterYouTube · Dec 15, 2011
Engine

  • Typical engines: GM 366 V8 (220 HP) or 427 V8.
  • Horsepower: 220 HP is a common figure listed, but it varied by engine option.
  • Fuel type: Gasoline. 

Drivetrain
  • Transmission: Typically a 5-speed manual (like Fuller or Spicer) or a 5-speed automatic (like an Allison 653).
  • Drive: 2WD 4x2 or 6x4 configurations were available. 

Chassis and suspension
  • Suspension: Standard spring suspension, though Hendrickson suspension was also an option on some models. 
  • Brakes: Air brakes were a common feature on many models. 

Axles and weight
  • Gross Vehicle Weight Rating (GVWR): Often around 27,500 lbs for single-axle configurations, but could be higher. 
  • Front axle: Commonly around 7,000 lbs to 9,000 lbs. 
  • Rear axle: Typically around 16,160 lbs to 18,500 lbs for single-axle models, with tandem rear axles available on 6x4 configurations. 
  • Rear axle weight: Tandem axles could have a combined weight of 34,000 lbs. 



How long is a 1979 Chevy van?


Standard height is 6' with 6'4" available. 12' body length and 96" width on a 146" wheelbase, 8900 or 10,000 lbs. GVWR. Dual wheels standard.



What is the wheelbase of a van?


A van's body length is measured by the distance from the van's front axles to it's rear axles and is known as it's 'wheelbase'. There are four van wheelbase options: a short wheelbase (SWB), a medium wheelbase (MWB), a long wheelbase (LWB), and an extra-long wheelbase (ELWB).



What is the wheelbase of a 1978 K10?


12.3in
1978 Chevy K10 Tuck Body 12.3in Wheelbase JCO0465 Car/Truck Bodies Wings & Decals.


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Kevin Bennett

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Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.