You're thinking backwards. What you describe you want is a TBI system.
If you want it to come off of fast idle sooner try adjusting the choke.
I'm one step ahead. I adjusted choke this morning. It was way off. Now it's perfect. Nice warm up and smooth low idle.
What and how does a TBI work?
BTW, are all the choke coils wound the same way? Which way are they wound? Had to dial mine to the right-clockwise. It was way left.
Stewart: i have a qjet. M4ME.
Cranking is very little, a few pumps in the winter, one pump in the summer.
Blazer, thats why i mentioned above which way the coils are wound? But i will probably bring my fast idle up just a teensie bit. I dont like a racy engine, i dont care how cold.
Oh, and 1967 kaiser: the hemmings article stated to drive off s l o w l y, is best how to warm up the engine. Keep the rpm's low. I dont get traffic behind me out in the countryside. Might have problems in the city.