C3 Brake Booster

[John Wissocki]

First, thanks to all who helped with my first NCRS event. I got a Top Flight with 97.8 for my 82 Collector Edition. My question about the brake booster is it supposed to have a stamped code on top somewhere. The judges and myself could not find one anywhere, I lost some points but not much. I know 100% this booster is orig., how can I find either documentation or something to prove without a doubt to the judges that this is orig. next year? Joe L. are you out there?

[Joe L.]

Re: C3 Brake Booster

John-----

I'm out here, but I don't know that I have a definitive answer to your question. The brake booster used for 82 applications was GM #18006555. SOME of these units may have been stamped "NR", but I don't know that all were so-identified. I would expect that this code would be more prevalent on 1981 models which used 2 different boosters and the code was required to determine SERVICE applicability. The code may have been dropped for some or all of the 1982 model year since all boosters were the same for 1982. The latter is just speculation on my part, though.

[Brian Pearce]

Re: C3 Brake Booster

John & Joe,

The date on the booster you are looking for is usually to be found on most brake boosters in 1981 - 1982. However we have noticed some known original Corvette not having this date code. My 82 Collector has such a date code, it is located atop the booster half closest to the firewall, nearest the group hose clamp. It reads 2103 NR NR is the broadcast code 2103 is "2" (82) "103" 103rd julian date April 13th 1982. If all booster halfs are believed to be dated coded in this same fashion then the only posibillity might be they're assembled 180 degrees out and the date stamping may well be on the lower side of the booster.

[Chuck S.]

Re: C3 Brake Booster

"...then the only posibillity might be they're assembled 180 degrees out and the date stamping may well be on the lower side of the booster."

Now, Brian, we all know that the General's guys always assembled the cars where NCRS judges would be able to read the date codes (right on top) without standing on their heads. If you ask me, it's quite appropriate that cars receive deducts when the assembly line workers didn't do their job properly, and judges can't find the date codes. After all, is judging science, or what?