Oddly enough when I got this motor and transmission it was supposed to be out of a rebuilt 1975 Power Wagon. I split them apart and put the motor on my engine stand to reseal Andre clean it up as it had great compression and revealed a double roller timing chain and very clean Springs and rocker arms as if indeed it had been rebuilt recently. It has performed well since. But with that said the torque converter had no weights on it? I didn't see any on the flywheel as well? So knowing that this can't be right I welded weights on the torque converter either side of the drain plug from another 360 torque converter that I had.. the truck ran smooth. The previous owner bought the whole entire truck as a rust bucket and kept the frame and motor and sold the motor and tranny and transfer case to me. He said it felt like it had a bit of a cam in it which was probably the unbalance of the motor LOL..