So I was timing my 8ba today. And when I was finished. I revved the motor up. No more than 3500 Rpm and when jt was de accelerating it started knocking. I shut if off instantly. So I tried retarding the timing and it still knocked. It was running rich so that made me think it couldn’t be pre ignition. I then pulled one plug wire at a time and the knock continued. So I pulled the pan and all of the rods are tight and only have play side to side like they should. I’m totally stumped. I’ve heard piston slap but I’m hoping it’s not that. Wanted to get some other ideas that it could be from you guys. Sent from my iPhone using H.A.M.B.