Nice article, however since I have a base 327 with Powerglide, from my perspective, it would have been nice to see more on the '69 CCS / Thermac system.
From what I've seen (and from what is shown in the 69 Assembly Manual, CCS/Thermac only applied to auto trans cars.
For example, if you look in the front section of the AIM, you won't see the Thermac system even shown. One has to go to one of the auto trans sections in the RPO section of the AIM (M35 for example) to see the drawings that show the Thermac and associated hardware.
One additional item relating to Thermac was the differences in the RH exhaust manifold. For the manual transmission, the "typical" log style manifold was utilized. However, for the auto trans applications, the RH exhaust manifold had the "heat stove" as an integral part of the assembly. From there, a seperate stove pipe connected the exhaust manifold to the air cleaner. It is not clear in the AIM where the vacuum connection from the Thermac was routed. I assume to a port on the carb, but another possibility would have been directly to the manifold vacuum port at the back of the intake manifold.
Anyone know for sure?
1969 RS Coupe