Re: V-8s -- reliable as a freakin' rock!

Posted by Owen_Dyneto On 2013/4/11 14:56:57

Most Ultramatic-equipped came with a 3.54 rear axle, but in 1956 (not sure about 1955) 3.31, 3.07 and 2.87 were also available and a few have passed thru my hands over the years. I still have a 3.31 set which I'm keeping "just incase" and had a 2.87 years ago that I lugged to flea markets and advertised the heck out of, never got a nibble so eventually it went to the junkyard. One problem with these high (numerically low) rear axles with Ultramatic is that the upshift under light throttle occurs at low speeds and the engine can really lug in local driving situations. For me, I'd rather have a few more RPM and less lugging.