What Would Be the Difference Between a Factory A/T and Manual Trans. Carb?

[dibbons]

For example, I see on Ebay there is a Thermo-quad listed for manual transmission. My vehicle is automatic. Thank you.

 

[67Dart273]

Some had a throttle return "dashpot" might be differences in non vs kickdown linkage. I don't know, otherwise, there is even a possibility of jetting changes

 

[RichB]

I have also wondered about that but never saw a difference. Since there is a difference in idle settings, my guess is the factory settings are different. I want to see if anybody knows the answer.

 

[pishta]

fast idle speed for an AT is going to be ~50-75 RPM higher.
Vacuum kick orifice size is different between carbs, whatever that does on an AFB.
Get an Carter rebuild kit that covers multiple carbs and there will be all kinds of specs for float height, choke pull off gap, etc. I would think maybe an AT would be a tad richer too for the convertor load?

 

[crackedback]

Jetting on occasion as well was different.