C3 (78) clutch pedal to Z-bar orientation

[Rick M.]

Which way does this rod go in? AIM seems to show the 'hump' up. This 78 is an auto to 4sp conversion so nothing to reference.

IMG_1883.jpg

[Gary B.]

[John S.]

AFC963A0-2239-48D5-B63C-54FD056AE102.jpg

[Rick M.]

Re: C3 (78) clutch pedal to Z-bar orientation

You are correct, it's not an easy pic to take. Hard just to see down in there. I had my son push the clutch in on my 73 and the hump looked in the 'down' position. Could be it's not installed correctly. 78 AIM looks drawn as the hump up. Anyway, thought it best to get expert opinions.
RickM

[Gary B.]

Re: C3 (78) clutch pedal to Z-bar orientation

I would think the bend is there to make it closer to perpendicular where it goes thru the firewall. If so, then one orientation shoukd look more correct than the opposite orientation.

Gary

[Tom R.]

Re: C3 (78) clutch pedal to Z-bar orientation

Rick, not an easy pic to get, but it looks like the hump does go up on my ‘73. Hope this helps.

Remember in 73/74, Corvettes was installing Muncie four-speeds. In 75, it changed to the Borg Warner Super T10s, which were in use in 1978.

I'll get out and do a lift to get that exact image of the rod. I may have to clean some parts...currently pretty crusty last time I checked.

[John S.]

[Joe L.]

Re: C3 (78) clutch pedal to Z-bar orientation

Tom, good point on the transmission change, let us know what you find. It might also interesting to know if the Z bar changed any. I’ll double check my 73 AIM for a part number.

John----


The installation configuration shown in your photo above is the correct configuration for all 1968-81 Corvettes.

The clutch pushrod for all 1968-81 Corvettes was GM #3921654. The clutch cross shaft for all 1967-81 Corvettes was GM #3888279.

[John S.]

[Rick M.]

Re: C3 (78) clutch pedal to Z-bar orientation

Do I dare to ask what finish this rod should be? Light or Medium gray phosphate? Dark Gray? Natural? Thanks.
RickM

[Joe L.]

Re: C3 (78) clutch pedal to Z-bar orientation

Do I dare to ask what finish this rod should be? Light or Medium gray phosphate? Dark Gray? Natural? Thanks.
RickM

Rick-----


It probably varied somewhat but I would call it a medium to dark gray phosphate.

[Rick M.]

Re: C3 (78) clutch pedal to Z-bar orientation

Rick-----


It probably varied somewhat but I would call it a medium to dark gray phosphate.

Thank You! Much appreciated. Painted the rod dark gray phosphate a couple weeks ago after bead blasting it so will keep it that way for now.
RickM

[Joe L.]

Re: C3 (78) clutch pedal to Z-bar orientation

Thank You! Much appreciated. Painted the rod dark gray phosphate a couple weeks ago after bead blasting it so will keep it that way for now.
RickM

Rick------


Just to be clear, the rod was not originally painted. It was finished through an electrofinishing process. If painted with a paint to simulate this finish, I would expect that it would be discernible if judged.

[Tom R.]

Re: C3 (78) clutch pedal to Z-bar orientation

Rick, not an easy pic to get, but it looks like the hump does go up on my ‘73. Hope this helps.

I'm not understanding this Z-bar thing. Is this in the cabin then exits?

But I would agree with comments and your photo...hump is up.

[Rick M.]

Re: C3 (78) clutch pedal to Z-bar orientation

Rick------


Just to be clear, the rod was not originally painted. It was finished through an electrofinishing process. If painted with a paint to simulate this finish, I would expect that it would be discernible if judged.

True. What I am working on is a high mileage and beat on 78 PC. Doing a 'refurb' to get it in good driving condition and looking at least somewhat original. Motor & trans not original and a lot of reproduction parts so car would not do well being judged. Would like to have it at a point that if a knowledgeable C3 person looked it over closely, would perhaps think to themselves that at least some effort was made to do it reasonably correct. I do much appreciate the tips & advice!
RM