Any 10 second "All Throttle" 318's in door cars ?

According to Wallace, my car should run mid 12s, but it really runs 14s. How can it be so close for all your cars and so far off for me? 3680 lbs plus fuel, 380 presumed crank hp(true MP Crate. Maybe I have the motor that although advertised minimum 380 bhp but is the one motor that was under horsepower because I suck. Everyone else gets a true 385 -400 ish )=12.42 according to the calculator........
I'll just backtrack and put a stock 360 and stock convertor. Porting polishing heads and a convertor added nothing to my times. A waste of money!
All I can tell you is I don’t guess at anything ! I know the exact weight on the starting line. I know the exact e.t. , and I know the exact mph ! One of the guys car is 3500 lbs runs 6.27 at 108 mph ! Wallace predicts those numbers and it runs that ! I punch in actual track numbers only