Originally Posted by lakeroadster
As for dimensions, if you don't find anything I can put my '65 C10 up on the lift and post some photos / dimensions this weekend.
I have a muncie on an engine stand in the loft in my shop. I climbed up and got some dimensions for ya. Just use this for reference, they aren't super accurate but they do match the data that V8&4spd posted previously.
Originally Posted by V8&4spd
A M20, M21 and M22 will all have the same dimensions. The length is 29 inches, the height is 9 inches and the width at the ears is 9.5 inches and the case is around 8.5 inches at the side cover.
Length, including bellhousing
Length, just the transmission