Synchromesh And Muncie Speed Transmission
An retains less heat due to its straight-cut gears and the lack of thrust that helical-cut gears create. An m-22 holds up well. the downside is it tends to make noise. It will rattle at low rpms and whine at high rpms. the is called the rock crusher. people think all muncie four-speeds are rock mar 12, 2021 for sale is a factory replica of the close ratio muncie rock crusher four speed transmission typically used in high performance 1965 to 1974 corvettes, camaros, chevelles, novas, El caminos, impalas, oldsmobiles and pontiacs.. also included are hand fitted synchronizer sliders and hubs. the hand fitted slidershubs improves up and down shifting quality through all rpm ranges.