P,B.T, Stamping

JBB · #1 04-04-2002, 03:38 AM

On a 2nd week Sept. 69 L-78 were the paint body and trim stamps Orange or Green???
Whoever owned our L-78 before us shot the whole engine compartment in Flat Black, I can see were they were under the paint, but don't know the color.

DanCamm · #2 04-05-2002, 11:54 AM

Not sure what determined the color, but I found mine by taking some 600 and wet sanding the black paint on the firewall (gently) until they appeared. On my Sept. 68 build, they were orange. I also know of an Oct. 69 that are orange also.

**Steve Shauger** · #3 04-05-2002, 08:08 PM

I own a 9b of 69 built car with orange PTB stampings. I believe there is some speculation that the shift may determine the color used.

JBB · #4 04-06-2002, 02:32 AM

Hey thanks guy's that helps alot. I want to do this car right, and I appreciate everyone's input on questions like these.
Joel/ILL.CAM.CLUB

AWSM502 · #5 04-11-2002, 05:22 AM

Hi Joel,

We have one Sept. '69 Norwood car in the family that had orange color stampings (found behind the A/C evaporator box). There was no evidence of stamps by the brake booster. Also had "ORN" (hugger orange car) written in yellow/green marker dead center on the fire wall.

I also have alot of documentation on the suspension paint markings that were found on this car if you need any help. For years I doubted the existance of things like this, until I found them on this relatively unmolested Texas car.

Let me know.

Keith
'69 RS/SS 502

JBB · #6 04-13-2002, 02:09 AM

I was thinking that the power brake cars never recieved the "p" "b" "t" stamps near or behind the power brake booster due to reaching that area before the booster was installed on the assembly line. I am wondering at what point those stamps were applied at the factory??

**Steve Shauger** · #7 04-13-2002, 02:26 AM

All the original car I have seen with PTB near the master cylinder had power disc brakes (boosters).

69L89396 · #8 04-13-2002, 05:25 AM

The "PBT" stamps were done by the Fisher plant before it went to the Chevrolet side for assembly. At lest that is the way I understand it.

I think the color has something to do with the shift also.

sYc · #9 04-13-2002, 08:35 PM

The markings were stamped on the car before anything had been bolted on. Here is how it went. Fisher body assembled the "body", firewall back, even painting it. Once finished, the body had to pass through an opening that seperated Chevrolet from Fisher Body, two companies, housed side by side. Before Chevrolet would accept the body, it had to be inspected, thus, the stampings. There were three parts to Fisher Body, "body, paint, trim", thus p-b-t markings. Not all Chevy plants did this, but Norwood did. To save time, two inspectors, one on each side of the car, thus markings on both sides of firewall. Tom

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