i was at the track and i tried preloading my driveline by keeping it in first gear and holding the e-brake up the launching with the e-brake. is that good to do or do you recomend another way?

 

You are doing it wrong.
To preload apply the ebrake and you lift the clutch til you feel it start to engage at your launch rpm. Release the ebrake and lift the clutch when the tree drops

 

thats what i ment i am slipping the clutch till it engages a little but i stll spin through first.

 

Depending on your power and driving technique you are going to spin in 1st. That doesn't neccesarily have to do with preloading. Preloading is used to take the "smack" from launching off of the transmission parts.

 

ok i see now thanks