The intake as in the carb?I would remove the intake from the engine, put a thin coat of silicone or RTV sealer on both sides of the gasket and re-assemble it.
Lovely how you tell me this the day that the studs from the intake break off and get totally stuck in the engine block. haha..murphy's lawactually the whole intake manifold the pipe coming off the engine jug. remove the nuts from the bolts and seal both sides of it with a thin coat and reassemble be sure to give it time to cure before starting the motor