Hope everyone had a good holiday!! Now on to my question...I installed a T-56 about a month ago in my IROC-Z. Now I have a vibration at a about 2300 RPM and up. The trans has been rebuilt as well. The vibration can be felt at a stand still while revving the engine. I put the trans in gear and depress the clutch and can feel it. I installed a new GM LT-1 flywheel, and SLP's disc and pressure plate, and new Moroso pilot bearing. Has anyone had a problem with the GM Flywheel before on a swap?? or SLP's clutch set???
Chris

 

If its when the car's in gear.. it
could be the driveshaft.
If its also in neutral, i'd check
anything that was just installed..
Have then come and check the car.

 

hah...you have a vibration too. after my T56 install i notice a vibration too but after 75mph. im hoping its jus my tranny mount preload plate. id say its the flywheel. maybe its defective. did u install things correctly?

 

I installed items as close to what I have read in all the online "information" sites as close as possible. All new parts, tourqed to spec.
Chris

 

I have a vibe problem that I didn't notice when I had the auto. I have a spohn TA and x-member, used but re-surfaced flywheel, rubber tranny mount (no spacer, 65 chevelle), roller pilot bearing (GM), and McLeod Clutch and PP.


1) What clutch are yoy guys using?
2) pilot bearing - roller or bushing?
3) Tranny mount?
4) X-member and/or torque arm?

 

I am using SLP's clutch set. Tier disc is a factory LT-1 piece. The part number was on it. GM flywheel, Spohn Torque arm & x member. Poly trans mount. Moroso Roller bearing. I did some research and found out there IS a certain way to clock the pressure plate to the flywheel and I intend to tear it down this weekend.
Chris

 

How ?????/

 

what do you mean ????

 

what is that certain way ???

 

Is there a mark indicating where the flywheel and pressure plate line up?
Sorry for the balk of insecurity I was just freaking out.

 

Actually there is. The GM flywheel is marked with an "X" or a paint mark. That is the heaviest part. The psi plate is also marked with a yellow mark, the lightest part of the psi plate. Line the 2 up as close as possible and it should not vibrate. I read this info on Centerforce's web site under LT-1 Dual Friction clutch installation notes. I aslo read it directly from GM's ESI service discs. Now I know I did not even think about paint marks when putting it together because the SLP set had no instructions, nor did the flywheel.

ChrisText from Centerforce