I guess they just act as thick washers to spread the load? This is an A body application and the FSM shows the spacers (washers). I noticed that on the bigger cars the FSM doesn't show them? I would imagine that these get tossed by most folks but the car I'm working on still had them so I'm using them.

Yup, that's what I think.

I think all, the early, Pre 1966 4 speed cars came with them and not so on the automatics
I've seen them on both A,B and E body cars since then
I use them on both types of tranny now , I'll make them if needed also

My 65 B Body 4 spreed looks nothing like that and never has had spacers.Rocky

Does the mount have slots? Typically something like that will be used to make up for a slot, or enlarged hole in the part it's touching.

My Challenger and Dart both had them
Found some at the U pull it on some others cars. As i had the linkage, cross member, and mount bolts all triple plated
Blasted,Sanded and polished all that stuff. Was great the car had loeaks as it was rust free
They lost one of the rectangle washers in the tank they were easy to find at the U pull it. Guess the rectangle spread the load better as it is the 3rd engine mount.

Not spacers, they are washers. I have never seen them on 1967 cars, auto or 4 speed.

I asked the same

https://board.moparts.org/ubbthreads/ubbt...-and-bolts.html

Now if I can find a decent quality mount that actually fits the factory bolts

Man these mounts from Napa - Advance Auto - O Reilly's are all the same cheap junk

Mancini Racing I was told out of stock

Yup, the slotted holes allow for variations in the body dimensions.

Aren't these spacers meant to allow you to adjust the front driveline angle? My '80 FSM (I believe) actually gives an approx estimate of thickness-to-angle adjustment measurement somewhere....

Absolutely NOT
There a retainer, like a round washer, so the bolts won't pull through the slot in the mounts

The angle shims are one-piece and span both bolt holes.

The trans mount that I have does not have slots but I think it is supposed to have slots. Might be a bad Chinese copy of the original. I understand the purpose of the washers if the trans mount has slots in it. I think I was confused by two things. The FSM calls these washers "spacers" when they aren't really spacers and the fact that my mount didn't have slots in it.

I ordered a new trans mount since the one I have seems to put the engine a little further ahead of where it should be. If the mount was slotted I could slide the engine back to where it used to be.

Can't you slot the holes in your existing mount?

I could but Summit has OE type mounts for less than $10 and the poly ones are around $45. I'd rather just order a new mount than spend the time taking my old mount over to a machine shop and waiting a few days for them to mess with it.

I stand corrected, sorry guys...I went back to my '80 FSM and found the following in 16-3 section (Propeller Shaft and Universal Joints):

Angle Correction
================
Front
...
(1) Remove mount bolts and use transmission jack to raise extension for installation of shims. Each 1/8 inch shim will reduce the angle 1/4 degree
...

Machine shop its called a Dremel with a carbide tip.

I think I might have figured out the issue. The poly mount showed up today and dropped right in. The engine is now back where it is supposed to be. Seemed odd to me that an aftermarket part fit better than an original so I took a close look at the factory mount. It has a Chrysler number on it 3633580 so I assumed it was the correct mount. But when I try to look up that number in the parts book I come up empty. So now I'm thinking that it is a Chrysler tranny mount for something else, maybe a light truck?? That would explain why it didn't fit even though it was close. It moved the engine about 1/2 inch forward which was too much for the other mounts to take up. I just fooled myself since I "assumed" it was the correct mount. Glad I bought a different mount, I could've chased my tail on this thing for a good while before I figured it out.

That's interesting, the tranny mount was able to "pull" the engine that much?
I'd like to move my engine back 1/2", if I could do it by changing the tranny mount, I'm
In.