My freshly rebuilt '51 235 screeches from the carburetor when I give it a lot of throttle. The carb is a rochester B. I thought it was the belt, but I listened very closely and can swear it's coming from the carb. The carb is freshly rebuilt too, the engine idles fine, has good vacuum (19 to 20 steady), and great compression. What could be causing the screech? I can throttle it slowly (from about 600 rpm to 1500) and it's fine, but when I really lay it on, it screeches like hell. The engine is not under load if that makes a difference. Thanks guys...
