No choke on my 63. I found out a few things over the years about this. I have an 850 DP and the DP are much easier to get started in cold weather without a choke then is any other carb with just one accell pump. Many carbs with one pump like AFB's and Thermoquads were much harder to get started with no choke. I can start my 63 in 25 degree weather without the chake. Hit the gas pedal 3 times and keep pumping while it cranks. Fires right up and of course you have to feather it for a few minutes to keep it running but its no problem. I start my car every few weeks thru the winter. Ron