The problem is that my motor has a vibration to it but when it gets up to speeds of 45 or 60 mph it goes away and it's just fine, so i asked some one what would cause the motor to do that (vibration) and the response was that i had a broken crankshaf, then i was told differently that the harmonic balancer that was on the motor was the wrong harmonic balancer and i needed the balancer for thew chevy smallblock 400. but if the crankshaft is broken would i be able to start my engine? I can start my engine and its just fine! it has no loud tapping to it nor do it have any loud knocking to it, just a loud squealing noise. so can some 1 please help me solve this huge question in which i have.
Thank You: Mario