Pulling V.A at idle

crackedback said
JMO 12* initial with a 484 cam is not the best spot. That's factory 340 cam timing specs and they were light.

I'd put 18-20 on it and see how things work at idle.

Drilling a carb is always the last resort for me. Timing usually helps clean things up if inadequate.

I think he said it was on 18 most recently. That's why I asked if he has ever verified TDC with a piston stop. Something's making him get into the transfer slots I believe. Retarded timing could sure be it.