High idle

Sounds like a vacuum leak to me pal. Make sure all rubber hose are in good shape and making a good sealing connection. Do you have power brakes? Did you match up the replacement gaskets you used? Sometimes you can use your idle enrichment screws, turn them counterclockwise 3 to 4 turns to richen things up(compensating for the air leak) to get it to run while you listen for the leak. Still can't find it? Take a squirt bottle with water or wd-40 and squirt around the intake and carb. Some guys use a propane torch (unlit) and pass the propane around the top of the engine, and listen for the rpm to change. Still can't find it? It maybe internal. You may have used the wrong gasket or it didn't quite seat right.