Originally Posted by StockTalon
Foot braking it will preload the drive-train and suspension as well as getting the rpms up in the power band, making it move out better.
Not on a stock converter. Even with an ATI 4,000 stall in a powerglide behind a BBF 460ci, I would cut quicker 60ft times and subsequently quicker 1/8th and 1/4 mile times leaving off idle (1.2x 60ft w/ t-brake, 1.3x off idle, and 1.3x-1.4x powerbraking). The transbrake always left harder than either one of course but in goofing around, powerbraking would always slow me down despite that it would get the rpm up higher. It's more about the sudden hit to the tires.
Pre-loading suspension has little to no effect when you're talking about 14-16 second cars. Just hit it from idle, trust me.