318 and 10's

Why, MOPAR, can't a 318 run in the 10's without nitro? What I've seen is people aren't having any luck with their own project, so someone else is lying? I seen a Volare at the drag way with a built 340 and 411 gears run 14.50's. My brothers throw-to-gather 318 (all used 340 cam and 360 heads and TQ on a cast intake) in a 76 Dart ran a 14.40 at 96 mph with 321 gears and a stock converter! The guy with the Volare said he didn't have enough gears.... Hmmm?? Some people can and some can't!!!!!!!!!!!!!!!!!