Differential for 23rd Series Deluxe 8 with Ultramatic

Posted by Fred Puhn On 2010/9/21 12:01:27

Now I know why my 1950 23rd Series Deluxe 8 with Ultramatic was making growling and clunking noises. The differential is shot: bad bearings and broken ring gear. Now I am looking for a good used differential, but there are several different gear ratios listed for my car.

Does anyone know how the car performs with the different gear ratios? What I want is a decent freeway speed (up to 65 mph) without blowing the engine, but not so tall a gear that I cannot climb hills. Tires are stock size (29" OD). Any experience out there?

Does anyone in Southern California have a good differential they want to sell? If so contact Fred at (619)475-1155 (home) or (858)676-7412 (work). I can come and get it in my pickup.