Using a typical muscle car combo with a Muncie close-ratio 4-speed, here is the mile-per-hour you reach in each gear at 2,600 rpm. In fourth gear you’re only going 58 mph, still under a normal highway cruising speed of 65-70. To drive at those speeds, you’ll be turning the engine even higher, creating more stress on the engine and consuming a lot of fuel.
Using a typical muscle car combo with a Muncie close-ratio 4-speed, here is the mile-per-hour you reach in each gear at 2,600 rpm. In fourth gear you’re only going 58 mph, still under a normal highway cruising speed of 65-70. To drive at those speeds, you’ll be turning the engine even higher, creating more stress on the engine and consuming a lot of fuel.