I am finishing my LT1 swap and am going to use the 4l60E that I pulled out with the LT1. My car is a factory 700R4. The problem I have is with the shift linkage. My factory 700R4 linkage had a male fitting that screwed into the transmission. The 4l60E has a male fitting in the spot where the linkage should go. Is there an adapter or am I going to have to change something? This is my first engine and transmission swap so I am learning at the moment.

 

It should be the same on both. The manual shaft sticks out of the side of the transmission with threads on the end, the shift lever is secured to it with a nut.