Listed below is a general features list along with vehicle specifications for the Third Generation (1971-1996) General Motors G-Series Vans.  The GMC Vandura version is the primary focus below, however the ChevyVan shares many similarities.

For more information check out the Chevrolet Van Wikipedia page.

GMC Vandura Specs

Auto Maker: General Motors

Model Years: 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996

Assembly Locations: Lordstown, OH / Flint, MI / Scarborough, ON (CAN)

Platform: GMC C/K

Also Known As: GMC Rally Wagon, Hi-Cube, MagnaVan

Class: Full Size Van (Unibody Construction)

Body Styles: 3 and 4 Door Van / 3+1 Dr Wagon

Layout: Front Engine w/ Rear-Wheel or Four Wheel Drive

Initial Engine Options:

  • G20 Standard: 4.1-liter L6 (125 hp (93 kW) and 235 lb·ft (319 N·m) @2400 rpm)
  • G20 Option: 5.7-liter V8 (190–210 hp (142–157 kW) @ 5200 rpm, 300 lb·ft (407 N·m) @ 2400 rpm)
  • G30 Standard: 7.4-liter V8 (230–255 hp (172–190 kW), 385 lb·ft (522 N·m) @5600 rpm)

Initial Transmissions: Three Speed Auto or 4-Spd Manual

Dimensional Specifications

  • Wheelbase: 110 in (SWB) / 125 in (LWB) / 146 in (EWB)
  • Length: 178.2 in (SWB) / 202.2 in (LWB) / 223.2 in (EWB)
  • Width: 79.5 in
  • Height: 79.4 in (SWB) / 79.2 or 81.9 in (LWB) / 79.8 in (EWB)

Drivetrain Updates

In 1983 a 6.2L Diesel V8 was made available which ran through 1993.  In 1994 GM introduced an updated 6.5L diesel which would run through 1995.

1983 marked he apperance of the iconic A-Team van and also the introduction of the 4-Speed Manual 117M transmission.  In the previous year (1982), manual transmissions were relocated from the steering column to the floor.

The standard 4.1L inline 6 was replaced by a 4.3 L V6 and California emissions laws forced a fuel injection 5.7L V8.  All other 49 states carried a carbureted 152 HP version.


Major Design Changes

1990 marked a differentiation year for GMC by introducing an Extended Wheel Base (EWB) model that llowed from an extra bench seat making a 15 passenger van.  This was a differentiating factor from Dodge & Ford who only featured a welded-on body extension.

Late in the model generation GMC intrdoucd a longer nose and four head light design.  This became more popular with conversion companies, primarily for school buses.  GM continued to sell stripped down version for these and other conversion purposes.


Anything else to add?  Let us know below…


  1. You excluded the 6.6 400 small block V8 as an option. Nor that it was given a 153 tooth flexplate externally balanced and required a straight bolt pattern starter unlike the vast majority of Chev. and GMC V8’s that used the 168 tooth flexplate and the cross bolt design starters.

    • A lady I know has a 1988 2500 vandura camper use to crank and let run once a month
      Last time would not crank unless poured gas in carb.Does it have manual fuel pump a rely or electric pump. Trying to find some info on it. She is a neighbour and I help her on things as a friend at no charge.

      • If it has a throttle body, it’s in the tank(electric.) If it still had a carburetor on it then it will be on the passenger side of the block.

  2. Question? In 1986, was the engine option a 5.7L V8 or 4.3L V6? And did they run the same transmission on both engines?

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