I still think the car should run low 11's. I mentioned before that eh stock cam does not need to be degreed. I think that is hurting you as well. I would also think more carb will do wonders as well. What size stall convertor are you running? I have read they like more convertor. also rear gear?
so far and it seams to run well I have 1000cfm efi throttle body 430 rear gear and 4200ish stall convertor.
I think there is more but that is found in time.