When ET and MPH Are Not a Match?

Converter, shocks, springs, gear ratio, tire hook, all equal 60' 330' 660' . You get the car working great and those numbers will be where they should be. The ET will be a result of those. MPH is HP and weight. jet up the carb, till the mph dropped off them go back 2 sizes for that day. increase Squirter size, pump shot, air pressure to get the 60' where it needs to be. same applies when it falls off go back 2. I was speaking to a fellow mopar man who said his distributor clamp loosened off and he lost 15 degrees of timing... Check your timing, You have lots to cover, hp just doesnt go away on its own, unless your nitrous bottle is empty? LOLOL