1967 Transmission Mount Shim?

[Richard M.]

I'm putting the mount brackets together after refininshing, and this shim was mounted between the transmission and the mount.
Archives, AIM, etc do not show this shim and I've not seen this before.

P9010069.jpgP9010070.jpgP9010071.jpg

Ideas?

Thanks,
Rich

[Rich P.]

Re: 1967 Transmission Mount Shim?

Richard, that spacer was used if a car had side pipes. It took up the space that the normal exhaust bracket would.

[Richard M.]

Re: 1967 Transmission Mount Shim?

Hmmm, his car has Dual Side Exhaust. Found it on the Tank Sheet. Makes sense now. I don't see that notation anywhere in the AIM, even in the N14 section. Does it exist anywhere? Curious.

Thanks,
Rich

[Donald A.]

Re: 1967 Transmission Mount Shim?

Hmmm, his car has Dual Side Exhaust. Found it on the Tank Sheet. Makes sense now. I don't see that notation anywhere in the AIM, even in the N14 section. Does it exist anywhere? Curious.

Thanks,
Rich

This question has come up a number of times, and the last time I looked into this I was informed this was never installed at the factory for midyears with sidepipes. The vendors sell them (5 bucks at LICS) but they were actually only placed by the factory on 69s with sidepipes. See this thread at CF http://www.corvetteforum.com/forums/...e-exhaust.html with response 5 from John Hinckley (JohnZ)

[Richard M.]

Re: 1967 Transmission Mount Shim?

Thanks Donald. I searched archives here and saw nothing jumping out at me.

I actually left it off as I never saw reference, then I just put it on a little while ago. Now I'll take it off.

No harm no fowl, now we know the story here on the TDB. I'll quote John's response below for reference.

09-15-2012, 01:58 PM
That spacer was only released/used on 69's with sidepipes; although the vendors sell them for use on midyears, the factory never did.

Thanks John , et al.

Rich

[Gene M.]

Re: 1967 Transmission Mount Shim?

Rich,
Don is correct the mid years NEVER used a transmission spacer shim. John Hinckley has confirmed this numerous times.

[Jerry W.]

Re: 1967 Transmission Mount Shim?

The 62 model year used a similar spacer

[Joe L.]

Re: 1967 Transmission Mount Shim?

Thanks Donald. I searched archives here and saw nothing jumping out at me.

I actually left it off as I never saw reference, then I just put it on a little while ago. Now I'll take it off.

No harm no fowl, now we know the story here on the TDB. I'll quote John's response below for reference.

09-15-2012, 01:58 PM
That spacer was only released/used on 69's with sidepipes; although the vendors sell them for use on midyears, the factory never did.

Thanks John , et al.

Rich

Rich-------


The spacer was GM #3949179. This is a 1969 part number. It was never even cataloged for SERVICE of earlier model years and it had no predecessor part number.

[Rich P.]

Re: 1967 Transmission Mount Shim?

Thanks, that's interesting as I have restored several 65-7's that had the spacer an they were unrestored cars. I wonder was there ever a service bulletin to retro fit them.

[Mike E.]

Re: 1967 Transmission Mount Shim?

Lest there be a misunderstanding, the 62-only shims were quite simple and very different than the mid-year one pictured. They were 1/8" thick, and were between each end of the transmission mount bracket and the frame x-member. They were unrelated to side pipes because they were not an option. Pics attached.
P9010498.jpgP9010499.jpg

[Joe L.]

Re: 1967 Transmission Mount Shim?

Lest there be a misunderstanding, the 62-only shims were quite simple and very different than the mid-year one pictured. They were 1/8" thick, and were between each end of the transmission mount bracket and the frame x-member. They were unrelated to side pipes because they were not an option. Pics attached.
[ATTACH=CONFIG]63551[/ATTACH][ATTACH=CONFIG]63552[/ATTACH]

Mike------

The shim shown in the #1 post was not used originally used on mid years. It was originally used only for 1969 Corvettes with side exhaust. Actually, although different, the 1962 and 1969 shims are equally simple. The 1962-only shim was GM #3813336.

[Richard M.]

Re: 1967 Transmission Mount Shim?

This turned into a interesting issue. Thanks All. I didn't get a chance to remove it as I got involved in adding more pieces to the '67 puzzle. It seems to me that the driveline angle will improve from before when removed. The front U-Joint on the driveshaft was bad when I removed it. I wonder if that shim had any bearing on the problem.

Mike, Since the 1962 was the only one to use that shim, was it due to a new transmission, or the new 327? SO many one-year-only items on the '62's, and the last year of the generation. THen '63 came along, another one-year-only model.

Rich

[Jerry W.]

Re: 1967 Transmission Mount Shim?

I believe the 62 shim was added because of a change in height of aluminum tranny case vs. case iron case mounting lugs.

just sayin.....it's been a while..Nolen's book covers that i think

[Domenic T.]

Re: 1967 Transmission Mount Shim?

Rich,
My 67 doesn't have side pipes and during my resto I ordered mounts from LIC. when I put the bracket that holds the pipes, the pipes hit the frame where the go thru the cross member. The mount was just to high... I went to the local auto parts and bought one that was 1/8 from top to bottom, the correct mount! everything now fits perfect. NOW I called LIC and they said there was a mount for the sidepipe car that was a bit taller that took up the space of the bracket that held the rear exhaust pipes that went thru the cross member. They assured me that they could not have made a mistake and sent the wrong part! I ate that one but the auto parts store mount was 1/2 the cost of the wrong one sent from LIC. I have it in the box and you are welcome to it or I can at least measure it. It was 1/8 taller than the correct mount.


DOM

[Richard M.]

Re: 1967 Transmission Mount Shim?

Rich,
My 67 doesn't have side pipes and during my resto I ordered mounts from LIC. when I put the bracket that holds the pipes, the pipes hit the frame where the go thru the cross member. The mount was just to high... I went to the local auto parts and bought one that was 1/8 from top to bottom, the correct mount! everything now fits perfect. NOW I called LIC and they said there was a mount for the sidepipe car that was a bit taller that took up the space of the bracket that held the rear exhaust pipes that went thru the cross member. They assured me that they could not have made a mistake and sent the wrong part! I ate that one but the auto parts store mount was 1/2 the cost of the wrong one sent from LIC. I have it in the box and you are welcome to it or I can at least measure it. It was 1/8 taller than the correct mount.
DOM

Dom, I think I'm all set, but can you post a photo of the one you got or a link to a photo? Interesting.

Rich