6.2 k30 questions

[Shawns84]

Hey all,
not exactly a blazer question, but im trying to find some info on a k30 crew cab my buddy just bought.
It has a 6.2, and an overdrive trans, but doesnt have a typical 700 r4 pan, or throttle valve cable. Im wondering what other overdrive trans/cases came with these trucks.
Any info/links would be greatly appreciated.
Thanks.

 

[colbystephens]

perhaps someone swapped in a 4l60?

 

[Shawns84]

Apparently 1991 is the cusp year for 4l80es in the heavy duty trucks for everybodies information.
Came with 4l80e/205...