Hi,

We are restoring our ‘68 Firebird and we need some help to figure out the color of these parts to restore my car like it was when it left the factory (picture from an original car would do):

-Master Cylinder
-Brake booster
-Rear axle
-Differential
-Spring leafs

Thanks

I have never found a definitive list of misc part colors. My opinion is:

-Master Cylinder - cast iron
-Brake booster - usually an anodized gold (although the factory may have also used a silver booster in some production because my original looked very silver.)
-Rear axle - plain steel
-Differential - cast iron with a plain steel cover.
-Spring leafs - someone else needs to respond. I think they are some charcoal shade.

Here is an example of the Zinc Dichromate plating that most brake boosters came with:

Zinc Dichromate Plating

It can be replicated by using a 3 stage paint system by Eastwoods:

Eastwood's Golden Cad

I also thought there is debate about the backside of the axle and differential being hit with a quick spray of chassis black paint.

Here some pics

Some great photos and advice. Another source that's good to see and fairly consistent with these photos is a youtube video by scared shiftless. They show all the facts tory markings on a 68 firebird.

Link?

I'm guessing this video? 1967 Firebird under body Chassis markings by Scared Shiftless