Hi..anyone know how to adjust an overdrive? I have a 390 with a 3-speed (on the column) with an overdrive and I don't think it works. Does the overdrive cut the rpm's in half? What is the proper procedure on engaging and disengaging the overdrive? It has a push/pull lever under the dash. Thanks in advance.

 

See the reply posted to "Overdrive or Not" this forum.