: I recently learned about a 1930s high performance carburater known as a "Simmons". Has anyone else heard about these carbs? Rick, I have two Simmons Carb's that I have had for years.I run one on a 30 coupe.It performs beautifuly.Very low, smooth idle and correct run out on all speed ranges.Another is a '31 with a side bowl.I am not presently running it.When it was in service it performed well.If speed is what you mean by "high" performance, I don't think they fall into that catagory.(I'm an under fifty(mph) man myself) There was an article in "the Restorer" recently about them but not a lot of detail was given.They, at a glace, look like a Zenith and some parts will interchange.That does not include the float valve, throttle shaft and plate.Hope this helps. Have fun! Paul
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