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I recently bought a 78 Chev Camaro I'm restoring. The transmission was out in it and I was given a transmission with it that was suppose to be good. I swapped them out recently. The transmission worked for about 5 minutes around the neighborhood, then nothing at all. It has totally quit working in forward and reverse. I changed the fluid and filter when I swapped them. Since it is not doing anything at all, is there something simple to try? Or will it need a rebuild? I have done about everything to cars, but never rebuilt a transmission. Should I buy a manual and try since I have an extra transmission to experiment with, or will I be wasting my time? Thanks for you input.

Check the modulator valve and the governer.

I've checked the fluid, it is actually a little high now. After installing it and draining it and replacing filter. I slowly filled and kept checking it and changing from park to reverse, to neutral etc. until it started having pressure and moving. Drove it around the block, accelerated heavy, no slipping or anything. At the end of the street I put it in reverse, heard a little clicking noise, put back in drive and it acted like it was slipping again like the original transmission. I nursed back to the house and checked the fluids again thinking maybe it was low after the drive, but they are fine. Got back in it to limp it into the garage and it wouldn't move in forward or reverse anymore at all. This transmission was supposedly "recond", but has been sitting a few years. Any ideas? Thanks in advance for all your help!

most of the time, from what i can see, if the tranny won't move the car then either a) it needs to be pulled apart and checked for broken/burned up parts or b) it isn't installed right check your install and see if everything is tight and plugged in and what not, if it is, then pull the pan, see if you can see anything in the pan that looks like it shouldn't be there (i.e. excessive black powder, metal fragments, ect)

A lot of the cars that i work on, when they quit moving it is one of two things if it has to be rebuilt. its either a) broken parts (planets, bearings, washers, spring retainers, ect) OR you've burned up one or more of your frictions...but then there is the band...My advice would be to just pick it out of the car and pull it apart...better to do it right than to rig it...RIGHT works RIGGED is temporary.

Thanks for everyone's help. In my haste to try it out?? when I thought I was finished, I didn't tighten the bolts on one side of the tranny to the engine enough. Sure enough it had pulled away a little and the torque converter wasn't engaging the pump. I just finished re-seating it and tightening everything properly and now it works!!! Shifts great, so hopefully there is a lot of life left in this tranny I put in. I will probably at some point get brave and try to rebuild the original tranny. Then I will have a back up. Wish me luck!!