Are either of these clips in the attached photo correct for the lower center grille attachment to the lower valence panel?
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Re: 66 67 Center Lower Grille Clips - Which one?
The j nut should be a hex and not a square nut. -
Re: 66 67 Center Lower Grille Clips - Which one?
Ron, a little more information may be needed.
Since I have a 64 changes may have been made to later C2's. So lets check the part number in your AIM.
For example your left hand photo looks like the correct nut, pn 3831954 sb 1934, used to hold the grille in all locations except the ends which used the "J" nut, pn 3826920. If you would verify the pn think I should be able to take a picture of the 3831954 sb 1934. As for the "J" nut do not believe mine is original.Comment
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Re: 66 67 Center Lower Grille Clips - Which one?
William,
Any other differences? Do you have a source docuemnt or the print that showes this hex nut?Comment
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Re: 66 67 Center Lower Grille Clips - Which one?
Take a look at -
https://www.forums.ncrs.org/showthre...hlight=3831934
Got the pn correct back then & yes the number is 1934 which I just corrected in my post. Will get some photos in a while. (so the right hand one in your picture appears to be the correct one.)
OK, I also looked at the "Universal Grille Unit Instructions" which came with my NOS 64 Grille in early 70's It is dated 2-13-67 and calls out for 3831934 nuts and the 9419252 screws - same pn as my 64AIM. Note the nuts are the same ones used to secure the instrument panel, however screws are different.
The second photo has a mfg logo - you may need to enlarge (at top)
while the third shows the side view similar to your left photo, not the right photo which is NTPComment
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Re: 66 67 Center Lower Grille Clips - Which one?
Alan, I think what you meant was that your '64 parts are identical to the left picture.
If you look close the RH part the top is off set curled up and I do not see that it would be a normally acceptable part for SMC application, and yes in a past life I was a D&R engineer on SMC parts
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Re: 66 67 Center Lower Grille Clips - Which one?
Ron,
As Alan mentioned, you should be able to find some originals in other places on your car. There should be six of them on 1ASM-E4 (glove box), one used for the front grille (11-13-B1) and five of them used with the screws that secure the instrument cluster to the dash.
My front grille clip was missing, but the others are all where they are supposed to be. I will get pictures next time I work on the car.Comment
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Re: 66 67 Center Lower Grille Clips - Which one?
Ronald,
It's the clip on the left in your picture. The teletale is the space in the middle that fits over the approx 1/8" thick fiberglass.
The right clip is thin in this area to snap over the metal brackets that are riveted to the inner fender. I don't know about a hex nut style but I can check my 67 tomorrow if you want.Comment
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Re: 66 67 Center Lower Grille Clips - Which one?
I do agree the left clip is real, the joint was stronger that the grille it held in place and was a bugger to get off for the picture. Right one is just a part claimed to be applicable that we collectively agree is not likely a Corvette part.
Part of the confusion comes from a lack of this page you reference in the asy manual I purchased a few years ago. It is missing this page 11-13 B1.
This will make the third find of a missing page so its safe to say, stay away from this fleecing bay seller, who failed to accept he was selling partial asy manuals - copies of copies!
assemblymanuals1
Seller Information
Mike Koller
Plover, WI 54467
Scott, can you scan that page for me?Comment
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Re: 66 67 Center Lower Grille Clips - Which one?
Ron,
The P&A's say two clips are required for the "center support" for 1964-1967. I checked the AIMs, 1964 shows only one. 1965 (11-13-B1) shows two, one upper and one lower. 1966-1967 both show only one in the AIM.
The attachment for 1966-67 is different from 1965, but '66-'67 still looks like it might have benefitted from having a second GM 3831934 U-nut at the upper location.
Is there supposed to be a second U-nut for the upper, or just the lower U-nut for 1966-67?Comment
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Re: 66 67 Center Lower Grille Clips - Which one?
66-67 just the lower the upper screw connects to the grill rod support from the header bar.Comment
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Re: 66 67 Center Lower Grille Clips - Which one?
Rich and John,
Mine had some "work" done in that area long ago. It wasn't put back together correctly at the time, so I will fix it. I have noticed that sometimes the AIMs seem to imply a fastener where one used to be called out specifically in previous AIMs.
For example, 4 x Item 21 wiring harness tie-straps are called out in 1966, UPC 12-A9, with "21" inside a box and lines drawn to each individual tie-strap. For the same page in 1967 (UPC 12-A8), the same four tie-straps are shown in the drawing, but only three are called out with a line drawn to the part number "21" inside a box. It has been my understanding that in practice, 1967 used the same four tie-straps in this area as were used in 1966.
I thought this U-nut with the front grille might be a similar situation, hence my question. Thank you for the clarification.
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