Hy 56chevyguy, if the tranny is stock to the truck, it will be a four speed Hydramatic, there is no provision for a p.t.o. on this tranny. This tranny does not have overdrive, the rear axle used with this transmission may have a lower ratio [numerically], and if it does, it will give more top speed, for any given input r.p.m., hope that helps
