Re: Re: If there was no time in shifting involved and the engine could take the preassure, a 100 speed transmission would hit 60 instantly but the top speed would be very slow. If you had a 1 speed and an engine that can take it, it would hit 60 in a minute but the top speed would be insanely high. These of course are like in a vacuum chamber and the road is straight and long. What are found in vehicles today are the comprimise between top speed, acceleration, and efficiency. Aceleration requires power and lots of it but when your cruising, it barely needs any power so it is translated to mor speed...the purpose of the transmission.