I need to know if this is ok or a bad idea and could cause a potential problem. I'm gonna be running a 1976 or so small block in my T-Bucket and I want to put an old style intake,( one with the filler tube on the front ) on this motor. Will the tube alone be enough ventilation, or will I need to run breathers in the valve covers too? I want to run old cal custom no hole valve covers. Will I need to put breathers in them and a pcv valve or can I get away with just breathers?