The car is a 1960 Impala Convertible-348 with Powerglide. Overall, it runs very smooth and everything looks to have been well maintained. I want my car to be safe and problem free, but am very concerned by the following two problems:
1. When shifting, the gear selector lever often jams and sometime jerks a bit or needs some juggling. It occasionally feels jumpy with a slight grinding-type noise. This mainly happens when shifting in and out of Park, and almost always occurs when shifting into Park (it rarely happens from R to D or vice-versa).
2. After driving for 25-30 miles or longer, the car often exhibits a bumpy, jerky-type reaction while reversing. It feels like it's bucking and fighting against backing up smoothly. Not sure if this matters, but it doesn't seem to occur on short trips or when the car is colder.
I'm baffled about this, and before I take it to a transmission man I would like to have some idea about what could be causing this. Anyone with knowledge of or has had these problems, your opinion would be genuinely appreciated.
Thank you very much in advance for any help.
Rich Primo