Boy looking at that picture, that carb needs a rebuild kit, has it ever been rebuilt?? it looks original, that might be alot of your issues with your poor performing 360, have you checked your timing?? this is a carry over from your other post on your poor performing 360, what are you gonna do with your pushrods/valve train you said you were gonna change the cam, if you do that you should redo the valvetrain, well you need to redo the valvetrain either way...