The short answer is yes. My Dad did it on an old '46 Dodge pickup with a three speed back in the 60's. He attached a 4-speed tranny back-to-back. Not sure how they were actually connected, but when the two transmissions were placed in reverse, it would go forward...slowwwwww. If either transmission was put in reverse by itself and the other in a forward gear, it would go backwards. 1st and 1st was also really slow. Just sharing...It was done!Sorry for a crazy question, but here goes (I did do a quick search and found nothing). Has anybody put two transmissions in series, with the second one turned backwards, for extra gearing. Could you even run an automatic in front of a 4 speed and have four ranges of gears. I know you likely would never need that many but 4 speeds are plentiful and I already have one. I know you probably couldn't shift on the go but wondered if it might be a cheap way for more gears?