What is a 373 rear end?

A 373 rear end refers to a specific gear ratio in the differential of a vehicle, where the driveshaft turns 3.73 times for every single rotation of the rear wheels. This gear ratio is commonly found in performance and racing applications, as it provides a balance between acceleration and top speed. A 373 rear end typically enhances off-the-line performance while still allowing for reasonable highway cruising RPMs. This setup is popular among car enthusiasts looking to improve their vehicle's acceleration without sacrificing too much fuel efficiency.