I’ve never laid a hand on a first gen but I assume it’s possible the issue is with your backdrive linkage if installed. A rod may have been bent out of wack or if not installed, the collar on your column (think column shifter) may have rotated out of the “park” position. On 2.ne gens, the key should not come out of the collar isn’t in the park position but I’m not sure if that’s the case in a first gen. I’d assume so.
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1977 Trans Am 400/4speed (swap)
Brian
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