Took my svt to the track last night and for the life of me couldn't get it to run under 16 seconds... Last time I was there I hit 15.5 with a bad alternator. The car is stock (exception of an intake) and I installed a new alternator several months ago.
During WOT in 2nd-4th gear the car seems to jerk all the way through its power band. After getting on it for a run or two, my clutch pedal also suddenly becomes VERY light and easy to push down, but it still works. Is this sign of a slipping clutch or is it something else? The car has 70k miles, and nothing has been changed besides the alternator and intake.