Originally Posted by slickman

I have done allot of power shifting and fast shifting from 1st - 2nd. All of the s197 mustangs have the POS plastic clutch line except the GT500 which they did right. When you see over a 50% a drop in tubing ID (in this case more like 60%), your fluid volume is going to drop drastically which in turn is going to cause a disengagement responsiveness problem at some point during shifting. This will be more noticeable with high pressure clutch setups. My clutch is rated for 600ft lbs and is stiff so, I noticed it shortly after I pulled the OEM out and installed the Excedy 600.

This problem is a known issues, not everyone experiences in the same degree but as you add higher performance clutch systems, you will start to see a drop in clutch responsiveness. I can tell you that my clutch now is smoother then it has ever been, OEM clutch or otherwise..

Originally Posted by moosestang

The spec stage 3+ is rated at 800 ft lbs, but I'm pretty sure it uses the same pressure plate as their other clutches, so it's not going to effect the hydraulic slave cylinder like a clutch with stiffer springs in the pressure plate.