Abstract: A machine for utilization in the testing of automobile automatic transmissions consisting of a mobile frame, a plate for placement of the transmission, a mantel assembly for connection to the transmission, a head assembly having a flywheel and pulley, the mantel assembly capable of vatical and longitudinal movement, the head assembly capable of transversal and longitudinal movement, and the plate capable of vertical and longitudinal movement. The mantel assembly having a single index plate capable of mating with most front wheel drive transmissions as well as a index plate for mating with most rear wheel drive transmissions.