I Have a situation

Post your E.T. slip so we can see where the problem lies. It's a HUGE problem. Not picking on your project, trying to help. I ran 15.9's with a 100% bone stock 318 2bbl auto with 2.94 gears in a B-body (dual exhaust). Just giving you an idea on how far your E.T. is off.
Again, if you post the E.T. slip, we can look at the 60 ft, mph, etc.
I have a 66 Valiant ragtop. My goal is to run in the 14's.
I have a 360 (.040 over)
Dr Dif 3.55 sure grip
Eddy intake
Eddy 1405 carb (600cfm)
Bullet cam
Engine built by Carolina Machine Engines
Engine is supposed to produce 365 HP
with headers and a 750 (cfm carb)
I have stock 273 manifolds
Running Cooper 235-60-14 tires.
Best ET so far is 16.3
Any suggestions on how to get this car in the 14 sec
range will be greatly appreciated.