However, common transmissions found in that year and model include:
* 4L60E: This is a common four-speed automatic transmission. Many 1994 2500s used this, particularly with the smaller V8 engines.
* 4L80E: This is a heavier-duty four-speed automatic transmission, better suited for the larger displacement engines and heavier loads the 2500 is capable of.
* SM465: This is a four-speed manual transmission. Less common in the 2500 than the automatics, it was still an option on some models.
* NV4500: This is a five-speed manual transmission, also a possibility, though possibly less common than the SM465 in a '94.
Swapping transmissions is possible but complex. You'll need to consider compatibility not just with the engine (bellhousing bolt pattern) but also the transfer case, driveshafts, and potentially the crossmember and wiring harness. You'll likely need a professional mechanic for such a project. The best place to start is to identify the existing transmission and then research which other transmissions are compatible with your specific year, engine, and other drivetrain components.
