All I have is a 3-day-old GM Stage 2. I don't have a 2.8, 2.85, or even a 2.9 pulley, and yet, when I shift into 2nd and sometimes 3rd from redline (7K) I get what almost sounds like my clutch slipping. I've had some clutch slip before and if you graphed the RPM's they'd make a perfectly shaped hill and valley shape. This would drop and then make a few short step and plateau shapes before RPM climb became linear again which is what makes me think it's not the clutch.

Is this my clutch slipping or is it the belt. If it's the belt, why is it slipping with just the base S2 size pulley? Can it be fixed? Can/will GM/the Dealer do it?

 

Sounds like a clutch to me, but tough to call under the description.

 

anybody else getting anything similar?

 

yea my clutch does the same thing and has since i put the stage 2 kit on at 3000 miles.... my cobalt has 8000 on it now and is fine other then when you beat the living **** on it she slips a lil bit.... drive it till it needs a clutch.... at least thats what im doing.... i said something to the dealer when they installed it and u know how they are.... dont fix it til it breaks i guess

 

got it. Well.. at that rate, looks like I'll be buying an aftermarket clutch anyway