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Update: Jun 2017
In 1985 the body was all stripped to metal. Anywhere fill or waves were present I replaced the panel.
All new GM panels from the door skins back including the trunk lid were replaced.
Click on thumbnails for larger view
Engine Tranny
Before body and paint
These pics were taken in 1981. I'm 28 here.
Body
The paint was stripped and new quarters/inners/outers were installed.
Along with new GM with new GM door skins and a GM trunk lid.
I didn't want any mud which the doors and trunk lid had.
Trunk
Gas tank stripped and painted with Eastwood tank paint.
Z21 Door Trim Clips
If you have the Z21 Style Trim Group Option then these clips will be on the top portion of your doors.
If you get new door skins then you will need to use the screws as in the pic. If the body shop forgot
to drill the holes and install the screws then you can use Goop Sealant. I hear that the body shops
now have the tool to actually install the studs in the door like the factory did.
Other Door Trim Available
There were 2 other door trim options. The STD one was a real thin piece of chrome metal.
Here is a pic of the other you can order from GM, and it is almost the same thickness as
your Z21 chrome trim door piece except it only extends to the window pillar by the side mirror.
For Sale: 1970-74 Z28 - Rubber bushings for the vertical support rod that mounts to the Rear Sway Bar. Follow link
Stripes
Front & Rear Stripe specs
Rear 1 Piece Spoiler
Rear spoiler mounting position and underside holes
COPO Rear Spoiler
Fender Emblem
Z28 fender emblem position
Front Springs
1994 before 1994 after
Moog's catalogs are incorrect that specify 5276 springs for a 70 Z28.
The 5276 in their catalog says for V8 and 6 cyl. So that can't be correct.
Therefore use Moog 5278 that are specified for an AC car.
Moog 5276 springs will not raise the front. I had them installed and contacted the Moog
rep who came and looked at the car and gave me a set of 5278's for my troubles.
NOTE: The 5276 should be used on 6 cyl applications only.
1996
Jun 2016
GMC Light Grey Met 9901L2 Dupont Canada
Paint Codes 1970 Camaros
10
Classic White
14
Cortez Silver
17
Shadow Grey
19
Tuxedo Black
25
Astro Blue
26 Med Blue
43 Citrus Green
45
Green Mist
48
Forest Green
51 Daytona Yellow
53 Nugget Gold
58
Autumn Gold
63
Desert Sand
65 Hugger Orange
67 Classic Copper
75
Cranberry Red
All GM 1970 Paint Codes (excluding Cadillac)
Z28 Wheel Paint
This is the best if you can still get it.
70-74 Ditzler DDL-32961 http://z28.150m.com/wheel.html
Mine
Currently my wheels are painted using GMC Light Grey Met 9901L2 Dupont Canada.
Laquer Code 6347 D Dark Grey IRD (RM ALPHA-CRYL)
1970 Original Laquer paint code and ingredients
that was also used
PNT-90 100 THINNERS
AT -141 340 BLACK
AT -114 490 MET
AT -176 618 REDISH BROWN
AT -174 639 YELLOW
AT -190 657 WHITE
AT -179 659 ORANGE RED
849 1000 SUEDE CONCENTRATE
Here is what I used since I could not get the lacquer. NOTE!
Don't forget to spray the last few coats
farther away from the wheel so when it hits the rim it dries fast to create the rough texture that GM
made on these wheels. Also don't forget to mix mix mix the paint so the metallic makes the paint light.
GMC
Light Grey Met 9901L2
Dupont Canada
Ingredients
428
402
453
467
406
413
460
Mix 1-1/2 fast thinner to 1
40-45 psi
Tires/Wheels
My rim - GMC Light Grey Met 9901L2 Dupont Canada
Good Year Polyglass F60-15 came on 70 Z28's. I'm not sure about the
Firestone Wide Oval tire.
Compare F60 to a P235-60-15. F60 on the right.
Note how close the trim ring sits against the rim on early style rims
Early '70s cost more to buy today due to the 5/8" oval hole.
The next iteration is the 13/16 th hole.
The round hole version is more readily available due to more that were produced.
1977-81 trim rings stick out compared to the 1970-74.
Air valve - Originals are 1 3/4" total off wheel without the cap. That leaves 1 1/4"
sticking out of the wheel when mounted without cap.
Measure 1 3/8" for the length of the valve stem sticking out of the rim
Trim ring instructions
Length in mm from L to R with the top depressed
39.35 33.31 26.82 26.75 27.73 22.64 20.33
I found these metal ones too 39.80 mm
Wheel nuts - newer design
Wheel nuts - original GM
Wheel nuts - comparisson
Fraction / Decimal chart