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Old 07-16-2018, 03:24 PM   #4
68Gold/white
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Join Date: Sep 2011
Location: Ark City, Kansas
Posts: 3,272
Re: TH350 kicks out of 3rd gear

Had similar experience with my 77 Trans Am.I have owned car since new. Original TH350 has never been out of car, although has had a 1970 Pontiac 359 engine since 1992 (was supposed to be a temporary engine, is still in car, but not much longer...)

3 different times, I was driving on highway, transmission felt like it just fell out of gear. It was in 2nd, you could get trans to pull in 2nd, but RPM's went pretty high. This was about 16 years ago, it has not done it since, although I seldom drive car.......

A co-worker had been a trans mechanic at a dealer for years told me the rubber seals DO get old and hard, and that some hub was over riding something (because of clutch wear) not allowing trans to stay in high gear...

I would get trans rebuilt.....it's due, so is mine...
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