U70 is for a "1970 car" and the hook is in the shape of a Buick A-body, therefore it is correct for a 1970 Buick A-body only. The Oldsmobiles also code many of their jack hooks like this, and the Chevelle's and El Camino's/Wagons code them by year and application. A lot of times the bases are also coded the same way, or will have "A-B" or something else like that stamped on them. The jack "stalks" are also date coded, so if you wanted to check your jack you could verify it was the correct one for your car. When I sold my 70 442 convert. I had 2 complete correct date coded jack assemblies that went with the car. The new owner was ecstatic. Duane
Very cool info. When did they change to the solid type shaft from the tube shaped one shown above? Mine 1969 jack (or I thought) has a U69 on the shoe but has the solid type shaft? Cheers, Mike
The Oldsmobile's I have seen had the tube shaft, but many of the 69-72 Buick jacks I have seen were the "Y" variety. I don't know if it was a plant thing, or due to availability, but I have seen both types used, although I never tracked any of this. I think my 69 Canadian built GS has the "Y" style jack. It also has the U69 hook, and the jack stalk is date coded correct for the car. Duane PS. If you look close at the 2nd picture Fred posted you can make out the "70" that is stamped into the base.
