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Transmission Overhaul - Advice Needed (long)

698 views 6 replies 4 participants last post by  keviha  
#1 ·
I'm in the middle of rebuilding the top end of my 289 Hipo. The car was restored for show in the mid 80's, but since then has been used as a weekend cruiser. I was able to find the PO who restored the car and after talking with him and checking out the engine as it was being disassembled decided the bottom end didn't need work.

In any case, the engine and engine compartment have been stripped for painting. This got me to thinking about the tranny. It's been leaking since I purchased the car last May and the PO said he didn't rebuild the tranny when he restored the car. He recommended I rebuild it.

After all this rambling my question is..should I pull the engine/tranny together to work on the tranny (it would make my painting jobs easier) or would it make better sense to pull the tranny only. Keep in mind I'm working in a garage that's far from the "Taj Mahal" of garages. I'd have to put the car up on jack stands and work on my back in garage floor. I do have access to a cherry picker and engine stand.

Thanks for the feedback. Kevin
 
#2 ·
I tend to get overwhelmed easy so I decided to break this into 3 separate steps on my truck. I dropped my transmission first and just finished a complete rebuild and clean up on it. It looks brand new now. I even painted the stamped servo cover and the pan in gloss black. I cleaned and painted the cross member also.

My motor is somewhat of an unknown to me although it cranks right up and doesn't burn any oil. At any rate my second step is to pull my motor, clean it, regasket and repaint. I'm also going to install a new rear main seal just in case and check the cylinder walls for ring wear and also take a look at some of the bearings and the crank surfaces. I don't expect it will need a rebuild but this will tell me about how much longer I can expect to run it before having to go through the motor. Regasketing will hopefully ensure it never gets as cruddy down in there as it is now. I plan to clean up and go through the carb while its off as well.

While the motor and trans are out, the third step is to completely clean up the engine compartment, front frame area, front suspension and around the transmission where it has slung oil and power steering fluid for years. Once that is done I'm going to stab the engine and trans back in together which makes that part a little bit easier.

If you sit one of these cars up for a length of time without running it the transmission pan gasket will dry out and crack or shrink up. When you start running it again its sure to leak across the front. Sometimes people crank down on the pan bolts to try and fix this which just bends that part of the pan around the bolt holes up. Then it won't seal up properly. I had to tap all my trans pan bolt holes back down with a hammer because of this.
 
#3 ·
I would pull the whole deal out as a unit. The time you won't spend on your back or getting up and down is worth it. You don't mention where the leak it but if it's the transmission (toploader?) then it's probably in the front where the idler shaft is inserted. Make sure to put some silicone there before you put it back together.
 
G
#6 ·
If you have a capable friend and a nice set of ramps & jack stands, pull the tranny by itself. Otherwise, pull the whole thing at once. I've pulled it and put it in by myself (4 speed), but it was a hell of a job and left me hurting for a week; bench pressing a toploader into place while simulataneously stabbing it thru the t/o bearing & into the pilot bearing AND attempting to get 2 bolts started is not much fun; with 2 people it's not too bad.
 
#7 ·
The car has an automatic transmission. I'm not sure of the orgin of the leak, but it appears to be toward the front of the tranny. I'm thinking pulling them together might be the best. Especially since I'm detailing both the engine and the engine compartment. Thanks! Kevin