What gear ratio is a 1989 Chevrolet half ton rear end?

There's no single answer to what the gear ratio is in a 1989 Chevrolet half-ton rear end. The ratio depended on several factors chosen at the time of the truck's manufacture, including the engine size, transmission type, and options selected by the buyer (e.g., towing package). Common ratios included 3.08, 3.23, 3.42, 3.73, and possibly others depending on specific options.

To find the gear ratio of a *specific* 1989 Chevy half-ton, you need to check one of these:

* The vehicle's build sheet (if you have one): This will list the axle ratio.

* The sticker on the driver's side doorjamb: It *might* list the axle ratio, though this is less common.

* The differential itself: The ratio is usually stamped on a tag or the differential housing. You'll need to look under the truck. It might take some cleaning to make the stamp visible.

* The owner's manual (if you have it): While less likely to have this specific detail, it is worth checking.

Without knowing the specific truck, it's impossible to give you a definitive answer.