markymark.....need some more information. What makes you think that you have an Olds transmission? Pontiac, Oldsmobile, and Cadillac all used the four speed Super Hydramatic in 1959. The shift pattern was P N D1 D2 L R. I think Olds, and maybe Cadillac called it S instead of D2, but with only moderate differences in the transmission itself. These were good sturdy and economical units that were used in many Pontiacs up until 1965 when the Turbo Hydramatic 400 replaced them. Parts are still readily available, however finding someone with the expertise to rebuild them, is unfortunately not around the corner at the local Ammco. The Turbo Hydramatic 350 is not a direct bolt-in. An adapter would be needed, as the bolt pattern is not the same as a 59 block. The TH350 is shorter and will require a driveshaft and crossmember modification, and probably a yoke change. The gear selector linkage would have to be modified, and the downshift linkage is mechanical now and would have to be changed to vaccum. That being said, it can and has been done often, but it isn't a plug and play proposition. How do you know that your transmission need to be rebuilt. It might just need a good fluid change and a linkage adjustment. Hope this helps......John
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