What is a C.A.P. option?

"Thermal control" is part of all smog. At the time smog controls came online, so did stuff like heated carb "snorkel" air, and hotter thermostats. On the other hand, at the "hot" end of the scale retarted timing, slower timing advance, and learner carbs caused engines to run hotter, and they needed better cooling!!


By the way, if you download and read the shop manuals (free at MyMopar) they have a section in 'em starting in 66 about emissions controls.