[mrolds88]

Is it making a whistling sound all the time? Is it idling fast? Those two would indicate a vacuum leak. I would double check the timing. Since a LOT of squarebodies used that plastic and aluminum cam gear from the factory, it almost sounds like the timing chain jumped to me. Easiest way to check it is to turn the engine over until the tming mark lines up on the timing cover and pull the distributor cap. If it doesn't line up, that would be the first suspect. Also while you have the cap off, you can check just how sloppy the timing chain is. All you have to do is rotate the crank backwards until the distributor moves. Shouldn't have more than about 5 degrees.