[rich weyand]

Well, I have a five-year-old Edelbrock 1406 on mine, and last Thursday I came out to the truck at midnight, at 2* below, where it had been sitting parked outside in the open for five hours. I pushed the throttle to the floor once, released, and turned the key. The crank didn't make one full revolution before she caught and ran fine on high idle.

We're only a couple miles apart. Why don't you come over here and we can park them side by side and do contrast-and-compare and see how your setup is different than mine. Those little cams and widgets on the choke and throttle connections can be difficult to get set up correctly. One little cam out of place and she'll never run correctly.