My PG was shifting funny after have it rebuilt, it would downshift when slowing down and quick upshift to high gear at low speeds. I went back to the shop that did the work, I've know this man for years and he told me that Powerglides are real sensative to the vaccum source. We switched mine around to the manifold and it made all the difference, shifting was normal. He explained this can be caused by not having the original carb, or the carb being dirty etc. I had a remanufactured one on my 283, looked identical to the original but the carb numbers were not the same.
Try a different vaccum source, like from the intake, the carb port may not have enough vaccum to let the tranny shift right.
[This message has been edited by elcamino (edited 07-05-99).]
Try a different vaccum source, like from the intake, the carb port may not have enough vaccum to let the tranny shift right.
[This message has been edited by elcamino (edited 07-05-99).]
