* 4.3L V6: This was a very popular choice.
* 5.7L V8: A larger, more powerful engine.
* 6.2L V8 (diesel): A diesel option was also available, though less common.
To know for sure which engine is in *a specific* 1989 Chevy Blazer, you'd need to check the vehicle's documentation (owner's manual, vehicle identification number (VIN) decoder) or look for an engine identification tag on the engine itself.