[rocketraider]

Choke pull-off 101:

Its sole function in life is to open the choke plate 1/8" or so after the engine starts and builds vacuum, so the engine gets enough air to run. If it were bad, the car would run poorly if at all until the choke thermostat warmed up enough to open the choke plate. To see if it works, observe it while a helper starts the engine. If it's working, it should pull its linkage back into its vacuum diaphram chamber immediately after the engine starts.

The choke stat may be worn out or misadjusted, or even burned out. It's a simple fix, if you can find one. Genuine Rochester parts are your best bet, as a lot of aftermarket pieces are now one-size-fits-all. If it's not heating up and expanding its spring, choke and fast idle time may last longer than design.

Fast idle speed is controlled by the fast idle cam and speed screw, located behind the choke stat. All that stuff may be gummed up and sticking. Spray some choke cleaner or WD40 on it and see if it frees up. Get a 65 shop manual, and it will tell you how to adjust the fast idle speed.

65's also have a choke air filter which may be plugged. If the choke assembly can't pull in fresh air thru the heat tube, warmup will be very slow, and you run a real risk of burning out the choke heat tube in the intake.