I have a briggs 8 hp and im going to reduce the shaft to 3/4" to install the torque converter I have. Without the torque convereter it does about 26mph and takes off pretty quick. Will it make a difference if I put the torque converter on it??
If you keep the same size driver sprocket, you will actually gain a small inscrease in top speed. The TC will kick into overdrive at a certain point and give you something like a 0.9:1 drive ratio.
Acceleration is kick ***.