I have an 02 Z06 with the MS4 Cam and a SPEC 3 clutch. 60K miles on the car, about 8K on the cam kit and clutch. I was driving to a ballgame last night and when I took a turn I down shifted from 3rd to 2nd. When I got on the throttle something popped and I lost everything. The motor still runs perfect, but something in the drivetrain is broke. The noise sounds to me to be right around the transmission. The clutch pedal still moves fine but when you let it out it grabs nothing. If you move the shifter around it still goes into every gear like it should so I am hoping the tranny is fine. The pop seemed to me to come from around the tranny area so I doubt it is an output shaft, plus the car was under no stress when this happened. Of course I had to get it towed home and am trying to decided if it something I can fix myself or if not. I will probably just go ahead and get it towed again to the shop that did the cam kit and upgrade but I would like to know what it is that could have broken. Thanks in advance guys.

I went outside and checked and the car goes right in gear with the car running and not even touching the clutch. Maybe that will help someone tell me what could be wrong. Maybe the shaft in the tranny snapped?

 

Sounds like trans problem.

 

I had that feeling.

 

I noticed you said you can put it into gear without using the clutch while it's "running". Does this also mean that when you do this, the car moves forward (or rearward, depending on which gear you've selected)?

 

Nope. No matter what gear you put it in the car does not move at all.

 

No sounds? Rattling? Grinding? Anything coming from the transaxle area?

 

There is some sound when you put it in gear. Pressing the clutch pedal does not cause any sound at all. When you put it in gear you do hear some type of sound and it seems to be coming from close to the motor, not the rear end. I would not really say it is a grinding sound, more like a rotating sound with something obviously not right.

 

Clutch fluid level OK?

 

Had a similar problem and upon disassembly found I had shredded the coupler on the drive shaft within the torque tube and that took out the slave clutch cylinder. The coupler is internal in the torque tube and connects the output shaft to the driveline. Ended up replacing the torque tube and slave cylinder.

Might take a look at this thread

http://forums.corvetteforum.com/show...hlight=coupler

 

Sadly, none of the sounds you've described sound easy. I think it's either:

1. Center is gone out of your clutch disk. I think this is the option to hope for.
2. Input shaft splines to tranny are gone. I had something similar happen to me with a T56 tranny in my '94 Z-28, but that was also with somewhere around 175K miles.
3. Similar to 2, the output shaft from the tranny to the diff has sheared.

In any case, I think you're going to have to drop the driveline to figure anything out.

Good luck, and let us know what you find.

And remember, have a good one, because it's not too hard to find folks having worse ones,
Mike

 

That's a possibility too, especially if it's the front one. The shaft would essentially be disconnected from the engine and thus not thrashing around while the engine is running.

 

Can you see that if you get up under the car?

 

The clutch fluid level is fine. I just went and looked.

 

Take off the clutch inspection plate, if it looks like an exploded rats nest, there's your problem. I'm putting my money on the disc fragged.

 

And exactly where is that? Any pics?

 

This pic they are putting it back on..

http://www.vetteweb.com/tech/vemp_05.../photo_33.html

Front of the car just behind the engine underneath.

 

If you shredded the couplers in the torque tube you would hear it spinning around in there.

My bet is that you broke the output shaft in the tranny to the diff. If you downshifted to fast and caused the rear wheels to hop just a little is all it takes.

 

Well you can definately hear something spinning around in there. I did not downshift fast. I took a turn in 3rd then realized I needed to downshift so I did and when I got back on the throttle...POP!

 

You can isolate the problem. Put the car up in the rear and put it into gear, if you don't hear the mainshaft turning in the transmisiion, it is either the clutch, torque tube or the tranny.

The inspection plate removal will tell you if its the clutch.

Anyway you look at it you're going to have to drom the driveline to make repairs.