Stock Auto Trans Rule Change History ?

[MR DERBY CITY]

Originally Posted by Gmirza

I know it was around this time they allowed a 904 in place of a 727 behind a 340. Any corporate transmission that could bolt directly to the engine was allowed.

George, I know NOTHING about Mopars but,….you are replacing one 3 speed trans with another 3 speed trans. The OP would like to know when the GM guys could replace their 2 speed trans with a 3 speed trans. And it was WAYYYYYY after 1990….