Troubles with car

finally after many years of saving and working I bought a 1972 Dodge Dart swinger 318 car pretty well all original
Anyway I put dual exhaust on and tuned the 2 barrel carb ran great. Anyway the timing chain set failed and it did this when I went to restart it. so I ordered a 340 camshaft,eddy intake and a 500 cfm eddy carb and a double roller timing set put it all together and it is doggy out of the hole. Just doesn't have the same pep as before . I checked my valve spring height as well as compression. I'm sure it is a tuning issue but I can't put my finger on it .Checked my timing set it at 10 degrees. now when I shut the car off and leave it sit it floods it idles well and I set the air fuel mixtures with a tach and vacuum gauge. Run nice down the highway pull ok not as good as I would like. New to forums so if I'm in the wrong place please let me know. Any help or insight would be great thanks