My point is that the majority of people who have bought other knock-off carbs, in other forums, have had mixed-bag luck with them. Some had to completely rebuild them, even put different metering items in them, just to get them to act as good as the old carb did. Just an advisory that you might end up "putzing around" with it anyway.
As Carter never did put their BBD jets and rods' specs anywhere, other than into Chrysler part numbers, that can mean two things. Either you end up drilling the main jets or getting some fine abrasives and a digital caliper to decrease the size of the metering rod diameters to get a E10-compatible fuel curve. The only Carter carb rebuild shop that had a lathe to cut metering rods with retired, so that source of custom metering rods is gone.
Better carburetor? Probably a Rochester 2GV 2bbl with an electric choke adapted to it. With the same throttle plate size as the BBD 2bbl. Application? The one that came on my '77 305 Camaro might work well. At least the main jets can be found easier than for the Carter BBD, I suspect. Or go back into the later 1960s with a Chevy 307 motor. Just have to adapt the throttle linkage to the GM orientation, which might not be too hard.
Either way, I would expect no issues with getting a smooth 550rpm idle in "D". Even with the E10 fuels and factory calibrations. Same bolt pattern, too.
Rochester? After Carter ceased production of carburetors, Chrysler started using Rochester carbs to replace them. Usually QuadraJets replaced ThermoQuads and the same might have been true for any 2bbls, unless they went to a Holley 2bbl smaller than the Holley 2210/2245 family used on the 360s.
Your money. Have fun!
CBODY67
