Originally Posted by MacLean

When my stock CSC went out, I decided to replace the stock clutch and flywheel as well. I went with the JWT clutch and flywheel and the ZSpeed HD CSC. I agree with the previous posts on being able to go through the RPM's quicker and it was a noticeable difference, but there is more chatter noise while idling.

I did not know about this high spring load that will add extra force on the main thrust bearings. I appreciate the explanation about this. I was told and have heard to go with JWT over Southbend, but it really comes to personal preference.