Rebuild or Replace 850 TQ for a Mild 340?

Take pics during disassembly of the carb for reference
Always a good move for anything.

The Car Tech (?) book “Carter Carburetors” has a step by step process for all 4 of the Carter carbs. New additions of the books included the Edelbrock carbs. The pictures and instructions are very good.

The OP will find the carb very simple but putting it back together again can be a trial if it’s done out of order.