Transmision

Hey folks, I have a 79 Z28. It has a 350 transmission. Now what Im wondering is: Is there any difference in a 350 transmission for a Z28 and any other
350 Chevy transmission? Ive had my suspicions about this transmission since I bought the car 2 years ago and this morning it like to never caught in reverse. It still kicks pretty good in drive though. Im just contemplating rebuilding this transmission or going to the junk yard and taking my chances. What really sucks is I sent it to the body shop this morning to get it finished and now its money on top of money. Well that's the way it is with an old car. Spend a lot but at least its a car that brings a lot of satisfaction.
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I'm in a similar situation with my '68 327/325 Powerglide, been slipping on upshift. Trying to decide whether to:
A- get rebuilt at AAAMCO, Cottman's or a local B- get rebuilt outside the area C- get a new/rebuilt replacement put in
If the tranny is original, are there "matching numbers" that would make rebuilding this one a better choice?
I'd hate to spend weeks waiting for a rebuild :(
Crabluv wrote:

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Bruce, there are numbers to match on most. We just rebuilt a 400 for a 71 SS Chevelle it had all #'s matching. The number is on the tag on the side where it tells you 400 or 350... Not sure on the powergildes thou.. With your powerglide there are different low gear ratios for the trans. there are 1.76, 1.82, 1.89, 1.96, 2.03, 2.11 that I know of. Depending on what you are doing with the car... I wouldn't go to AAAMCO or cottman for rebuilds, especially on any high performance app's. (but that's me) There are a lot of good high performance trans builders out there I would stick with one of them. There are also a lot of companies out there offering ready to install trannies for a decent price. I wish I still had my numbers matching powerglide... we rebuilt ours and put it on the shelf for completion of our project... a bottle of muratic acid spilled on it one night, by the time we caught it... there was not much of a case left... for one of our '69 SS convertable's.
Good Luck ...

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