Had a chance to examine a 4010 for sale cheap. This one had no provision for AT kick down so I passed, but it was very close to an Autolite 4100, a carb I've always loved and most the adjustable parts needed to dial it in are interchangeable with 2300,4150, and 4160s. It was light as a feather,and no leaky bowl gaskets. The Truck Avenger vent tube should work.
I've used many 2100,2150, and 4100 Autolites and they always worked well climbing steep grades and side angles. Of course they bump stall occasionally. But all carbs do that.
I've used many 2100,2150, and 4100 Autolites and they always worked well climbing steep grades and side angles. Of course they bump stall occasionally. But all carbs do that.