Looking at the chart, by venturi size yours is closest to a TSX 458 which came on a TO-30. I use a TSX-458 on my TO-20. Those carbs have enough adjustment to where you can make them run ok on most engines with similar displacements. My only questions is the Oliver throttle arms. That"s what your carb was originally for. Do they let the governor work like it is supposed to?
 

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