Pull the plugs and inspect them are they wet? If so they may never work again. With the plugs removed block off the fuel line so no more fuel can reach the engine and block open the carb. throttle plate. (WFO) Now with the distributor unpluged (no spark) spin the engine over till all signs of fuel are gone from the intake. This may take a while if the intake is "swimming with fuel" as you described use a heat lamp to warm the intake and help remove the fuel. Go get some more new plugs, (yes I know they are new) go get some new plugs, Again go get some new plugs.
Spin the engine again (no fuel no spark) till you have no signs of fuel. Then install the new plugs you just bought. (don't clean the old ones yes I know they are new). Connect the distributor but not the fuel line unblock the throttle. Now use your starting fluid, a short burst and crank. Did it fire? If so remove the carb. and overhaul it, replace the float. Before you hook up the fuel line check the fuel pressure. 3 to 6 lbs. is ok. now spin the engine to refill the carb bowl. Look down the throat of the carb. See excess fuel? No? Good! Yes? Replace the carb. It has a crack. Start this puppy and go fo a spin.
