What were the original nuts used on the '69 rear spoiler

[nuch_ss396]

Hey guys!

While at the Camaro Nationals a couple of weeks ago, I got into a discussion with a very low mileage COPO owner
regarding the original nuts ( and washers? ) used to affix the rear spoiler.  His car had domed-head nuts vs. the
standard nuts I've often seen.  I honestly never gave this much thought.  The owner of this car also thought that
possibly early Camaro's used these different different nuts vs. what was used on the later production cars.  Can any
of you confirm this for me?

As always, it would be nice to see some images to go with the dialog. 

Steve

[JohnZ]

My unmolested original 02D Norwood Z/28 with factory D80 has domed "acorn" nuts across the rear, and hex nuts with integral conical washers across the front - photo below. 

[firstgenaddict]

Norwood 04C 69 Z... 45 k miles original paint... same as JohnZ's car.

[68rsssrag]

My March 68 had sealing washers made or a hard rubber on top of the decklid. Bottom is per John.

Arno

[JohnZ]

Mine has never been off the car, so I don't know if it has sealing washers between the spoiler and the deck lid surface or not; the hex nuts with conical washers securing the front edge do have sealing washers on them, which were integral with the nut.

[x77-69z28]

my 05A burnished brown x-77 car is the same as john's

[nuch_ss396]

Do you guys have any sense if these same acorn nuts would be correct for my 10-D-68 car?

Steve

[RamAirDave]

The last D80 car I restored was an original paint, very original 07A car.

It had no acorn nuts, all were the gold finish open nuts with the integral washers as are on the front side of JohnZ's spoilers.  I went with new spoiler hardware, the acorn style, so I should still have the originals.  I'll find them.

Heres the only before pic I have of that area.  Not very detailied pic, but too large to be acorns:

[Dave69x33]

According to Jerry MacNeish and his documented research, the D80 spoiler package became a mandatory Z28 option, with a price increase on April 1, 1969. According to my discussions with Larry Christenson, well known for his 1st Gen restorations and overall knowledge of them (he has had numerous unrestored 69's, plus his #1 of two actual 1969 Pace Car is pictured in Jerry's book, The Definitive 1969 Camaro Z28-SS396 Fact Book, on page 185) the tall "acorn" nuts were changed to Kelp nuts with integrated washer, approx. the first week of May 1969. Thus, it can be assumed that the switch was made about this time. 

You can buy these along with many other GM NOS hardware from AMK Products (www.amkproducts.com). The part number of this nut is 4821091 (w/sealer) or 4821092.  I have an 05A 69 RS Z28 that had the original Kelp nuts on it and I replace with AMK NOS pieces.  You can see pictures of the hardware on AMK Web site.

Dave

[RamAirDave]

Went and dug them up today.  Here's a picture of the spoiler nuts in the pic I posted above:

[nuch_ss396]

No acorn nuts there!  Two men say they're Jesus, one of them must be wrong.....

[RamAirDave]

No acorn nuts there! Two men say they're Jesus, one of them must be wrong.....

Well, not exacty.  Dave69x33 mentions that the acorn nuts were dropped in favor of the integrated washer kelp nuts around May.  Seeing how the nuts I posted the pic of are off of an 07A car, makes sense.

dave

[nuch_ss396]

Sorry Dave,

I mistook the 07A for an 09A and I was thinking early build vs. late build.

Steve

[enio45]

JohnZ......in your pic, the tabs on the trunk lip.....it looks like 68 style vs the 69.  Have you noticed this??  I'm not an expert but thought the 69's trunk lips were smooth edge without the tabs?  What do yo u think?

[JohnZ]

There were three different design iterations of the '69 deck lid (not counting the service replacement, which was yet another version); the one on my original 02D car with the weld tabs is the "second design" version.