Distributor Cap carboned new engine

[elorenzof]

SBC - 327 - newly built engine... No major upgrades. Cylinder heads already installed and valves adjusted at an engine build shop here in Phx. Initial Start and Timing set to about 13 degrees before top dead center. looking great so far! But, during the 15 min initial break in, the pass side was getting way too hot and melting the 90degree spark plug boots. So we shut it off immediately after about 10 mins when we noticed it. Water pump temp stayed at 190. But we could feel the heat on the pass side and the exhaust manifold was starting to get red

Next morning, replaced wire boots, and went to start engine and noticed there was a slight ticking sound coming from the pass side cyl head. So we figured the valves werent adjusted properly upon build, and yes they were too tight on the pass side. So, we pulled valve covers, adjusted all on pass and driver side to be safe. Only the pass side was too tight. So we are thinking this is the reason why the pass side cylinder head got so hot?

Next startup, now the timing light is showing the balancer timing mark WAAAY below the timing marker on the timing cover. Runs like dookey and bogging down when we try to accelerate it thru the linkage on the new edelbrock AVS carb. (we have the vacuum advance line going to the Right side on the front of the carb, and the left port is plugged off. So we figured we needed to adjust the distributor timing, and we can only go so far obviously turning it counter clockwise. Even though it was perfect last night when we were doing the initial startup. Decieded to pull the cap, and there is Burned into the contacts carbon pretty bad. New HEI dist from Autozone not reman.

Does anyone have any ideas on how to get this properly running? Possible bad distributor at this point? We are stumped. (sorry we arent engine builders) what is happening?

Lorenzo