Grinding on 1-2 shift.
Everything you described happened to me only after 3 years of ownership of my car and my car at the time only had 50,000 miles on the clock at the time. You have gotten some good advice here and some of this may be repetitive. If you are planning on keeping the car for a long time, since everything is exposed, here's what I did:
1) RPM Transmission
2) Consider an LS7 Clutch and Flywheel. Stronger than the LS6 but won't break your bank like some of the exotic aftermarket clutches you can buy.
3) Speed bleeder
4) New 2004 GM Clutch master cylinder (Do not get a Tick Master cylinder whatever you do)
5) Torque tube overhaul...I replaced torque tube couplers
6) C6 shaft seals on rear differential
7) O-rings along the drive train
8) DTE brace (totally optional)
I have over 90K miles on the car now and trans is still rock solid.
1: Planning on RPM transmission
2: No desire to up grade the clutch. I have no plans on increasing power, or working the car hard enough to need a better clutch. Will look into OEM, or slight upgrade (not requiring new flywheel.)
3: Speed bleeder is on my shopping list.
4: Do you mean the master for a 2004 model year Z06? Is the clutch master something that is failure prone or ages out?
5: Will go through the TT while it's out.
6: Has a shaft seal weaping on the diff, so that was gonna get addressed. Fluid recommendations?
7: O rings go where the major components meet?
8: Gonna pass on the DTE brace. Car is stock and won't see sticky tire drag strip launches.
Can anyone recommend a good write up on how to pull the trans? I watched a youtube video, I didn't like how high up on jack stands it was to get the mufflers off. They had the car kinda sketchy nosed down on jack stands. I may pull the mufflers at work, and drive it home with no mufflers to do the job, then just drive it back to work and put the mufflers back on. But I'd rather just do it all at home.
2: No desire to up grade the clutch. I have no plans on increasing power, or working the car hard enough to need a better clutch. Will look into OEM, or slight upgrade (not requiring new flywheel.)
3: Speed bleeder is on my shopping list.
4: Do you mean the master for a 2004 model year Z06? Is the clutch master something that is failure prone or ages out?
5: Will go through the TT while it's out.
6: Has a shaft seal weaping on the diff, so that was gonna get addressed. Fluid recommendations?
7: O rings go where the major components meet?
8: Gonna pass on the DTE brace. Car is stock and won't see sticky tire drag strip launches.
Can anyone recommend a good write up on how to pull the trans? I watched a youtube video, I didn't like how high up on jack stands it was to get the mufflers off. They had the car kinda sketchy nosed down on jack stands. I may pull the mufflers at work, and drive it home with no mufflers to do the job, then just drive it back to work and put the mufflers back on. But I'd rather just do it all at home.
It's a job, everything has to come off. In my opinion get a trans shop to remove it. Depending on their cost it might be cheaper in the long run not to have to worry about the headache
Don’t worry about the mufflers. They can hang in place, use a zip tie to keep the flange end up after you unbolt them, use the zip tie loop hang it to gas tank heat shield bolt that is near by. After you get the rear cradle lowered you can removed the mufflers.
I had my car up about 20.5” on jack stands when I removed the transmission earlier this month.
Last edited by robmiz; Aug 26, 2020 at 11:33 AM.
2: No desire to up grade the clutch. I have no plans on increasing power, or working the car hard enough to need a better clutch. Will look into OEM, or slight upgrade (not requiring new flywheel.)
3: Speed bleeder is on my shopping list.
4: Do you mean the master for a 2004 model year Z06? Is the clutch master something that is failure prone or ages out?
5: Will go through the TT while it's out.
6: Has a shaft seal weaping on the diff, so that was gonna get addressed. Fluid recommendations?
7: O rings go where the major components meet?
8: Gonna pass on the DTE brace. Car is stock and won't see sticky tire drag strip launches.
Can anyone recommend a good write up on how to pull the trans? I watched a youtube video, I didn't like how high up on jack stands it was to get the mufflers off. They had the car kinda sketchy nosed down on jack stands. I may pull the mufflers at work, and drive it home with no mufflers to do the job, then just drive it back to work and put the mufflers back on. But I'd rather just do it all at home.
your exhaust is pretty straight forward removal but be ready the H pipe is heavy and awkward. Make sure not to damage your 02 sensors and wires, they are clipped into the tunnel.
Remove the upper shock bolts, loosen the lower shock nut and bolt. Remove the upper A arm bolts and put the bolts back in where they came from or bag and tag everything.Once loose the shock can come out easy.
To remove the axle from the differential jack the lower A Arm up so the cv axle is straight, if you try to pull the axle out with a lot of angle it will bind up. The higher the a arm the easier it is to release the little clip. inside the differential.
You will need a long extension to get to the bolts on top of the torque tube, i used a wobble extension or socket to make sure i had good contact.
There are some way better write up on here, much more detail bust giving you some tips here.
Hope it all goes well.
Blocks stacked under front tires
I had to raise the rear end higher to get enough clearance.
Floor jacks are a must
Last edited by SeanyB; Aug 26, 2020 at 11:43 AM. Reason: added notes
The weights are not to balance the flywheel as that would be done by machining like any other flywheel, they are to fine balance the crank.
There was a post on here somewhere from a GM tech that used to do it in the factory.
Anyway, something to think about
Simply put the transmission in neutral with the Ebrake on, loosen the 3 Torx fasteners, 2 on the torque tube and one on the pinch bolt for the shifter rod, Drop the pin into the slot and re torque the fasteners, all 3 to 30 N.M or 22 ft lbs. The 2 torque tube fasteners first, then the pinch bolt. Pull the pin back up, that’s it. USE AN ALLEN WRENCH OR DRILL BIT IF THE PIN IS MISSING, you want it to just fit inside the hole in the shaft, stocking straight up. push the box forward if there is a little play then tighten the bolts.
Did you have an aftermarket lower box in the car? The bushings in the lower box tend to wear out this creates a little slop, pull the shifter and check the the rubber mounts for the shift box to the torque tube, this is another area that tends to deteriorate due to heat and age..
There are also 2 joints in the shift linkage itself that tend get some play, they are held in place with roll pins, take a look at the picture on the thread below. MIne was a little loose i actually center punched around the swivel pins to tighten them up a little but still letting them move.
https://www.corvetteforum.com/forums...ic-inside.html
Hope this helps.
The Best of Corvette for Corvette Enthusiasts
Everything you described happened to me only after 3 years of ownership of my car and my car at the time only had 50,000 miles on the clock at the time. You have gotten some good advice here and some of this may be repetitive. If you are planning on keeping the car for a long time, since everything is exposed, here's what I did:
1) RPM Transmission
2) Consider an LS7 Clutch and Flywheel. Stronger than the LS6 but won't break your bank like some of the exotic aftermarket clutches you can buy.
3) Speed bleeder
4) New 2004 GM Clutch master cylinder (Do not get a Tick Master cylinder whatever you do)
5) Torque tube overhaul...I replaced torque tube couplers
6) C6 shaft seals on rear differential
7) O-rings along the drive train
8) DTE brace (totally optional)
I have over 90K miles on the car now and trans is still rock solid.
So RPM says the offer no warranty if a speed bleeder is used...









