Maximum advance curve on my 360

Thanks 340mopar and moper. It seems quite weird that both the 318 and the 360 balancers are both out. Also I did check the TDC mark on the 360 when I had the engine on the stand with the heads not installed yet. I measured TDC with a dial guage on No. 1 cylinder and checked the actual mark on the balancer before bolting the heads on. The cam is a Comp cams xe274 profile dialed in at exactly .082" lift on No.1 intake (Comp cams advised 0.80"). Sorry I do not have any pics of the chambers but the cast No. is 3418915 with 1.88/1.60 valves and they were U.S. heads with the hardened exhuast seat, stainless steel exhaust valve and they had holes just underneath the exhaust ports which indicate they are for the air pump used for emissions which I blocked of with grub screws. The cast No. was stamped underneath the head not on top on the port runner. They have been milled to have a 65cc chamber. I had these heads on the 318 for almost 10 years which had the same max advance. I rebuilt them and reused them on the 360. I am thinking this problem has something to do with these heads since both engines had the same max advance curve. I hope I have described the heads enough for you Moper.
Kind regards
Billy D>>>