Hey folks, I've more or less got my '79 Berlinetta 350 4 barrel (Qjet) straightened out and running like new again, after it suffered severe negligence in the hands of the previous owners, but I'm getting a howl type noise out of the rear end. I have replaced just about everything under there--axles, wheel bearings, and I've filled up all the fluid, but that didn't seem to help. The noise is most intense right around 45-50 mph, or about 1600 rps in third. It keeps going on up to a fairly high pitched whine at highway speed. It responds the the gas pedal, more or less, going away when I stop giving it gas, but it comes back as the car slows through the 45 mph speed again. Any idea what could be the culprit?

Thanks
Joe

Hi Joe. My guess would be the carrier bearings. A 67' I had, had the same noise you describe and that was the problem with it.