The car has +650rwhp and it has brand new spec stage 3+ kit

After break-in....I took to the high way for some rans..While shifting the car feels like BOGGING on face then pull once i left the clutch on all gears ( act like it has burnt clutch )..Also i noticed on the 1/4 the pedal is soft and from 1/4 to full throttle the pedal is hard.

The clutch skip on 4th

 

BTW...It has Pressure plate and im sticking with STOCK flywheel!!

 

Freak...you may want to retitle your post...because this sound very typical of a hydraulic issue...not a clutch issue. I suggest that you check the fluid in the reservior...if it is discolored (dark) then it needs to be flushed and refilled. If the fluid is not discolored then you should try bleeding the hydraulics. I suggest using a vaccuum bleeder to do this (Mighty-Vac). Let me know what you find after trying the above and we can go from there. Thanks!

 

Ok..Change the master/slave the cylinder and the BOG disappear but the clutch pedal become soo soft until 3/4 then it become stiffer...Is that normal?

 

You have air in the lines.


Worst case, you have a bad slave.

 

How could take the air out ?..Also where the slave located?

 

The slave is located in the bellhousing on your car ( im assuming you have an fbody )

ive seen threads where people cutout a small hole in their floor pan to access it. Otherwise you will have to reach up the side of the trans to find it. Its just above the inlet line from the master.

 

i have a regular spec 3 and it slipped a couple times while i just had a cam and bolt-ons. i just put a procharger p1 kit on and it's slipping alot more. clutch only has 2-3k miles on it and i changed hydraulics when i put the clutch in. wondering (and hoping) if this could also be an "air in the lines" issue as well? any thoughts anyone?

 

It cant hurt to bleed it. Worst case, you need a new clutch