at the track it run consitent 13.3-13.0 has run a 12.6 on my sohc
but on the highway in 3rd-5th when I punch it from 5k it wont hold.
took it off twice to resurface flywheel.
its a 6puck sprung stage3 no name brand

 

bump

 

u need a stonger clutch then if its slipping, the clutch cant handle the power