Replacing engine and transmission mounts in my 1966 Deville Convertible

[AZ Deville]

Hello!

I am a new club member and I am going to be replacing the engine and transmission mounts in my 1966 Deville Convertible.  Has anyone done this job and have any pointers for me?  Your thoughts and tips are appreciated!

[cadillacmike68]

Unless you have done so recently, I would replace the transmission seal at the same time, to save on having to do it separately later.

[AZ Deville]

I have not replaced the transmission seal so I will do that at the same time!  Thank you!  Are removing and replacing the mounts pretty straight forward? 

[Dave Shepherd]

Aside from supporting the engine to get it off the mounts safely, same with the rear trans mount, this is a routine job.

["Cadillac Kid" Greg Surfas 15364]

AZ,
If you are going to replace both motor mounts and the transmission mount my suggestion, having done it this way is to;
1. Loosen up (but do not remove) the nuts on the motor mounts that go through the frame(suggest you loosen them 1/2 way).
2. Loosen up (1/2 way) the two bolts that secure the transmission mount to the frame cross member.
3. Using a floor jack under the motor (suggest using a 2x10 to protect the oil pan between the jack and the pan) lift the motor as required to replace one side motor mount and then the other.  The mounts are held to the engine block by 2 bolts that go horizontally through the block casting.
4. Before tightening the through frame bolts more than 1/2 way, raise the rear of the transmission (again protecting the transmission case) and change the trans mount.
That's it, Just an easy (took me about 4 hours the first time) swap.
Greg Surfas

[AZ Deville]

Thank you all for the great advice!  I really appreciate it and I am sure will make the job easier!