It is mashed down closed. Its supposed to be there? It probably used to provide vacuum for something like vacuum windshield wipers or distributor vacuum advance. As long as it isn't leaking air into the manifold or needed for wipers, distributor, etc. I guess you could just leave it.
'57 GMC 102, Original 347 V8, HydraMatic, 3.08 rear gear, added A/C, disk front brakes, HEI, AFB carb, '98 Honda Black Currant paint. T-boned and totaled 10/12
'52 GMC 152 Stake Bed, Original 228, SM420, added A/C, HEI, disk front brakes, '67 Chev 3.55 rear gear. Gets used as a real truck.
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