This pack of 3 shims is a smart idea to keep on hand during every clutch install! Includes the following:
No matter the results of your measuring, this pack includes a shim that will fit your needs. All made here in the USA! Will not fit Cadillac CTS-V.
How to determine if a shim is needed for your setup:
During each and every clutch install you perform on a newer GM vehicle, you must measure to see if a shim is necessary for proper installation. This is done by taking two simple measurements (see worksheet):
1) Measurement "A" is the distance between the surface of the bellhousing that meets the transmission to the tip of the pressure plate fingers. To get an accurate measurement, the clutch must be torqued properly.
2) Measurement "B" is the distance between the throwout bearing surface to the transmission surface that meets the bellhousing. To get an accurate measurement, the slave spring must be removed and the bearing must be fully seated at the bottom of it's travel; resting on the slave's base.
Once you've got your two measurements, make sure that measurement "B" is ~3/16" to 1/8" LESS than measurement "A". If you come up with more than 1/8", add an appropriately sized shim between the slave cylinder and the transmission in order to get the measurements where they need to be.
Your “A minus B” measurement should be 0.125 to 0.200 for adequate bearing travel and to allow for clutch wear. If there is no difference between the two measurements, or if "B" is greater than "A", there could be a problem with clutch engagement which could result in premature clutch slip and eventually a total failure. Contact your clutch manufacturer before proceeding with the install.
Posted by Unknown on 9th Jun 2016
Parts came quick and fit great. used the .055 on my LS7 clutch setup.
Posted by Unknown on 3rd May 2016
Good shipping and parts as described!
Posted by Unknown on 7th Oct 2014
Trial and error because didn't measure but had a lift and other things that made pulling the trans a cake walk but second time was the charm !
Posted by Luke on 12th Dec 2013
Just about anytime you change the setup (clutch, flywheel, transmission, engine or slave cylinder) the clearances can be different. Thanks to this kit, it is just what I needed to get the clearances correct. When I had troubles figuring out the required clearance due to the numbers on the website being incorrect, I called in and they gave me the right numbers within seconds! Thanks!
Posted by Mike on 22nd Jun 2012
Glad I got these because I had a large gap between the throw out bearing and pressure plate. Cheap insurance and they also bailed me out of a jam for another install.