1974 Z28 Front Spoiler Braces

zfool

Veteran Member
May 19, 2014
702
Rochester, MN
I wanted to get you as much info as possible. Length, thread and type.
The bracket bolts are 1/4-20x 1/2 hex washer type(not flange head) with dashed lines at 12-3-9 o’clock with a J in the 6 position on the head-stamp. They are a body bolt type taper. The spoiler bolts and nuts are 10-24x5/8 hex washer type( also not flange) body bolt style with a J head-stamp; all bolts are in black phosphate. Possibly Jacobson mfg or Jupiter manufacturing.

The 10-24 nuts are Kep’s style with the captive star lock washer; galvanized or grey phosphate.
Sorry it took so long.
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6B48C390-06B1-4576-88FB-437A13753F92.jpeg

00EE1F41-29A3-4D2F-8481-FC1FB2204CD9.jpeg

8AF51243-7446-4180-8869-2F980F8C299E.jpeg

FE6D0740-1E31-4650-9B54-FC219C87A0A4.jpeg
 
Last edited:

CamaroNmotion

Veteran Member
Jan 8, 2006
422
Buffalo, NY
I wanted to get you as much info as possible. Length, thread and type.
The bracket bolts are 1/4-20x 1/2 hex washer type(not flange head) with dashed lines at 12-3-9 o’clock with a J in the 6 position on the head-stamp. They are a body bolt type taper. The spoiler bolts and nuts are 10-24x5/8 hex washer type( also not flange) body bolt style with a J head-stamp; all bolts are in black phosphate. Possibly Jacobson mfg or Jupiter manufacturing.

The 10-24 nuts are Kep’s style with the captive star lock washer; galvanized or grey phosphate.
Sorry it took so long.
885B21F5-C273-4379-987D-0225933C80A8.jpeg

6B48C390-06B1-4576-88FB-437A13753F92.jpeg

00EE1F41-29A3-4D2F-8481-FC1FB2204CD9.jpeg

8AF51243-7446-4180-8869-2F980F8C299E.jpeg

FE6D0740-1E31-4650-9B54-FC219C87A0A4.jpeg
Thank you zfool. This info is very helpful. I will search for a supplier for these specifically and post my finding here to help anyone else that's looking to replace/install the brace bolts and front spoiler end screws.
 

CamaroNmotion

Veteran Member
Jan 8, 2006
422
Buffalo, NY
Yesterday I received my ordered hardware, quick turn around and they look great. I found them at AMK products. If you download there pdf catalog you can follow through their part numbers which I am listing for a order to replace your originals or adding front spoiler ends.
Spoiler ends-- B-10811 Pg. 91
Spoiler ends nuts-- B-12810 Pg.53
Front brackets-- B-13423 Pg.92
 

zfool

Veteran Member
May 19, 2014
702
Rochester, MN
Yesterday I received my ordered hardware, quick turn around and they look great. I found them at AMK products. If you download there pdf catalog you can follow through their part numbers which I am listing for a order to replace your originals or adding front spoiler ends.
Spoiler ends-- B-10811 Pg. 91
Spoiler ends nuts-- B-12810 Pg.53
Front brackets-- B-13423 Pg.92
Nice find
 

Bobs RPO Z/28

New Member
Mar 10, 2021
12
Illinois
Nice find
Slightly different question but regarding front spoilers.

I have no photos of my two previous 1974 Z/28s showing detail but is the as molded lower valance, the one with the center section molded in NOT the soft replacement one painted black on the 74's or body color? I remember them being black. And going to body color in 77 when the Z/28 came back out.

Can anyone let me know? Thanks
 




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