What engine is in a 1989 Chevy G20?
In brief, the 1989 Chevrolet G20 van offered multiple engine options, including a 4.3-liter V6, a 5.0-liter V8, a 5.7-liter V8, and, in select heavy‑duty configurations, a 6.2-liter diesel V8.
The Chevrolet G20 was part of GM’s a full-size van lineup for the 1989 model year, used for cargo and passenger applications. The engine choices varied by body style and market, with gasoline V6 and V8 options forming the core lineup and a diesel option appearing on certain heavy‑duty configurations. The following options were commonly associated with that year.
Gasoline engine options
Below is a breakdown of the gasoline-powered engines typically available for the 1989 G20, which covered the majority of vans built for street use and light commercial duties.
- 4.3L V6 (262 cubic inches) with throttle-body fuel injection (TBI)
- 5.0L V8 (305 cubic inches) with throttle-body fuel injection (TBI)
- 5.7L V8 (350 cubic inches) with throttle-body fuel injection (TBI)
These gasoline engines were paired with GM's automatic transmissions of the era, providing a balance of power and reliability for cargo work or passenger transport.
Diesel option
In some heavy‑duty configurations, the 1989 G20 offered a diesel alternative designed for fuel efficiency and longer work shifts. The diesel option was a large‑displacement V8 with mechanical fuel injection.
- 6.2L V8 diesel (GM/Detroit Diesel, mechanical injection) available on select heavy‑duty G20 vans
Diesel variants were less common than the gasoline options and tended to appear on higher‑payload builds intended for fleet or commercial use.
Summary
For the 1989 Chevy G20, shoppers typically encountered three gasoline engines—the 4.3L V6, 5.0L V8, and 5.7L V8—along with a diesel option (6.2L V8) on certain heavy‑duty configurations. The exact availability depended on body style, market, and the vehicle’s intended use.
What type of motor oil does a 1989 Caprice take on a 5.0 305 engine?
5W-30
FRAM – 5W-30 Conventional Motor Oil, Low-Speed Pre-Ignition Control, 5 Quart (Part No. F620-5QT)
What engine does a 1989 Chevy Silverado have?
5.7 LITER V8
5.7 LITER V8 W/EFI/350 CU. IN.
How much horsepower does a 1989 4.3 have?
The 1989 Chevy 4.3 V-6 engine, as found in the S-10, produced an output of 160 horsepower at 4000 RPM and 230 ft-lbs of torque at 2800 RPM.
Is a Chevy G20 a 3/4 ton?
An addition for 1967 was the G20 heavy-duty 3/4-ton version. The G-20 featured heavier suspension, a 12-bolt rear axle, and increased hauling capability with wheels having a 6-lug bolt pattern. The G20 model was available only on the 108-inch wheelbase version.
