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Planning on dropping the C4 from the coupe project and cleaning up the case and essentially detailing the transmission. Like most C4's it leaks a bit. I'll attack the obvious and replace the converter seal and the driveshaft seal as well as the pan and filler tube. Thanks to this forum (cammachinist) I've heard that the "shift activator shaft seal" should also be replaced.

Is this easily done? Or will I end up pulling some shaft out of the case? And are there any other seals worth replacing just to seal it up? Not wanting to get complicated here.

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66 C-code convertible
66 C-code coupe
65 GTO hardtop
76 Nova hatchback
 

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To change the selector seal you must drop the velve body. My c4 was also leaking at the band tighetning screws. there is one on each side, the seal for these is attached to the nut. Also there is a O ring on the spedometer cable.

John
Can you smellllllllalalalala........?
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[color:blue]66 coupe 289 2v C4 needs restore</font color=blue>
[color:blue]70 coupe 351W 2v c4 almost done (?)</font color=blue>
 

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You should change all seals while the transmission is out of the car. I replaced the front pump seal, the selector shaft seals (O ring and oil seal) and I had to change the band adjustment nuts with new one's. Did this 2 years ago and the transmission hasn't lost a drop yet.
When you replace the valve body after replacing the selector shaft seals be sure the kickdown shaft in de transmission is lined up with the valvebody.........

Good luck,


Erwin, The Netherlands,

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