* 700R4: A four-speed automatic overdrive transmission. This was very common.
* 4L60E: An electronically controlled four-speed automatic overdrive transmission. This started appearing later in the 1992 model year and became more prevalent in subsequent years. It's possible, but less likely than the 700R4 for a very early 1992 model.
* SM465: A four-speed manual transmission. Less common than the automatics.
* NV3500: A five-speed manual transmission. Less common than the automatics, but more common than the SM465.
To know for sure which transmission is in a *specific* 1992 Chevy half-ton truck, you need to check:
* The vehicle's identification number (VIN): A VIN decoder can often tell you the transmission type.
* The truck's build sheet (if available): This will definitively state the transmission.
* The transmission itself: Look for markings on the transmission case.
Without more information about the specific truck, it's impossible to say definitively.
