M-21 Trans leak
Thread Starter
Safety Car
Joined: Aug 2000
Posts: 3,734
Likes: 2
From: Southeastern PA
M-21 Trans leak
I've been working on replacing the clutch on my 70 454 4-speed. I have the trans out and it's a leaker. It appears that the side cover is leaking. Anything I need to know about getting involved with trans leaks?
I'll post a pic in a bit. Pecking on my iPhone
I'll post a pic in a bit. Pecking on my iPhone
Last edited by 70454; Apr 24, 2010 at 10:14 AM.
Limping across the line
Joined: Oct 2002
Posts: 5,299
Likes: 109
From: Peoria Az
Someone has peened the front case around the shaft in a attempt to abate the leak.
If you do a search here you can find what others have done to stop or slow the leaks.
Is the side cover leaking from the seam or from the shift lever seals?
If you do a search here you can find what others have done to stop or slow the leaks.
Is the side cover leaking from the seam or from the shift lever seals?
Burning Brakes
Joined: Feb 2003
Posts: 1,128
Likes: 4
From: Upland Ca
For the main shaft you could try using some right stuff gasket goop. Just before install clean very good with break clean, apply some sealent, put some saran type film over the sealent and bolt it down. As for the side cover, that's an easy fix. Just pull off the cover and replace the gaskets.
