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When you get your factory service manual, you'll know what to do with that lever.

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The other name is Jetaway.
I strongly suggest that you purchase this reprint of the factory manual for the 1958 Oldsmobile. It will contain all the info on the 371 motor and the transmission. This...

I think if you shut the motor off in reverse, that's park.

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There's a fellow in Salinas, California named Gene Berck. He specializes in rebuilding these old transmissions and may have a line on a shifter. Phone is 831-320-2726.

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