Following is excerpted from Chevrolet Product Campaign Bulleting #69-C-6; dated March 3, 1969 and entitled: Product Campaing #9006 Quadrajet Carburetor Fast Idle Cam Replacement
All 1968 and some 1969 Chevrolet equipped with the Quadrajet 4-barrel
carburetor have a type of fast idle cam that could crack and eventually
separate from the carburetor. If this occurs, a section of the cam
could become lodged in the throttle linkage and cause the throttle to
be held in a partially open position. If this should occur while the
vehicle is in motion, the vehicle will not slow down when the driver
removes his foot from the accelerator pedal. While this is a remote
possibility, if it does occur, the driver should shift the transmission
into neutral, apply the brakes and bring the vehicle ~o a complete stop.
Install a new type fast idle cam on vehicles involved in this campaign
in accordance with the instructions in this bulletin.
VEHICLES INVOLVED
All 1968 Chevrolet passenger cars and trucks equipped with a V-8 engine
and a Quadrajet 4-barrel carburetor are involved. All 1969 Chevrolet
passenger cars and trucks equipped as outlined above and built prior to
the following serial numbers are involyed..............
Camaro:
Los Angeles L-523411
Norwood N-599752
The document is 6 pages long. Page 1 is attached to this post, pages 2 - 6 follow in subsequent posts.
An observation on my part. If you wanted to be judged correctly in a concours show, to have the fast idle cam that came on the carb from the factory poses an obvious safety risk. As noted in the document, the replacement fast idle cam for all small block V8's with auto transmission is red in color and the replacement cam for all smal block V8's with manual tranny and all 396 BB cars is blue in color. For me, I'd rather have the correct cam and not risk a failure which could result in the throttle linkage being stuck open. I guess another option would be to have the correct cam colored as per factory original. I wonder how many 68 - Feb 1969 Q-Jets are out there today without having been upgraded as per this dealer campaing bulletin.