Repairing Transmission
Thread Starter
Team Owner
Joined: Jan 2007
Posts: 31,233
Likes: 201
From: Utah
Repairing Transmission
Ok, I have an 02 Z06 and while I was at the drags on Saturday on my second run I shifted into 4th gear and it stuck. Took a lot of force to get it out of gear. From what I've found out it might be the shift pads or the keys so I'm upgrading to bronze pads and billet keys. While I have the transmission out what else would you guys recommend replacing/upgrading? Hoping to do a h/c mod in the near future so I want the transmission to be able to handle it.
Thanks,
Franklin
Thanks,
Franklin
Safety Car
Joined: May 2007
Posts: 4,812
Likes: 46
From: Taylorsville North Carolina
I had that same problem with mine last week at the track. It would only happen in 4th after a full run up to redline; it would start slipping (clutch?) and would not come out of 4th. From what I could tell from posts here, it is a clutch thing, but it feels like transmission to me. Is doing the pads and keys a DIY project or do you let someone else do it. I wouldn't mind doing mine just to rule out the transmission. Sorry for the hi-jack.
Thanks.
Thanks.
Safety Car
Joined: May 2007
Posts: 4,812
Likes: 46
From: Taylorsville North Carolina
What you are talking about is dropping tranny and disassembling - right? Is there no way to check them without doing that?
Sublime -
Are you sure that is what your problem is, or are you just going ahead and repl anyway?
Sublime -
Are you sure that is what your problem is, or are you just going ahead and repl anyway?
Thread Starter
Team Owner
Joined: Jan 2007
Posts: 31,233
Likes: 201
From: Utah
Thanks for the feedback!!
Last edited by sublime1996525; Mar 11, 2008 at 08:11 PM.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Safety Car
Joined: May 2007
Posts: 4,812
Likes: 46
From: Taylorsville North Carolina
From what I have found out, they changed to steel forks sometime in 2003. Unless yours has been changed, it is probably aluminum. The steel repl is given anytime the tranny is out. Hope this helps.
Le Mans Master
Joined: Sep 2003
Posts: 6,276
Likes: 227
From: Farmington CT
Cruise-In VII Veteran
I think the pads fall off the forks, there was a tsb covering this and if under warr. GM will fix
I really haven't seen anyone dive into the M6/12's and post
RPM is the shop to deal with if your going to sub out the work
I really haven't seen anyone dive into the M6/12's and post
RPM is the shop to deal with if your going to sub out the work
Thread Starter
Team Owner
Joined: Jan 2007
Posts: 31,233
Likes: 201
From: Utah
Well I ordered the steel fork, the pads, and the billet keys. Hope they get here for the weekend and will try diving into it then. I'll take pix and make a post of how everything is going and some of the issues I come across. Hopefully everything goes ok!!!!
Drifting
Joined: Jul 2006
Posts: 1,700
Likes: 60
From: Springfield IL
I have been in and out of these things more then a few times. If you have all the tools needed, it makes life easier, but it is still one of the hardest manual transmissions to rebuild. It has even more parts then the typical T56.
Drifting
Joined: Jul 2006
Posts: 1,700
Likes: 60
From: Springfield IL
Thread Starter
Team Owner
Joined: Jan 2007
Posts: 31,233
Likes: 201
From: Utah
Ok what are the tools needed? Anything special?
Pro
Joined: Sep 2006
Posts: 571
Likes: 0
From: Milwaukee Wi
To get 1st thru 4 off you will need a gear puller. I have mine apart currently waiting on a backordered reverse gear. My 1st thru 4 were fine so I didn't take them apart.
you can download the manual here to see what is involved.
http://www.ttcautomotive.com/English...ice_Manual.pdf
You will also need some lock ring pliers and some snap ring pliers. A small punch to get a pin out of one of the shift forks. And a torx bit I forget the size but I twisted 2 of them trying to get the 2 torx head bolts on the outside of the tranny loose.
There is a vendor that sells a special puller but I don't think they are a sponser. pm for vendors name.
you can download the manual here to see what is involved.
http://www.ttcautomotive.com/English...ice_Manual.pdf
You will also need some lock ring pliers and some snap ring pliers. A small punch to get a pin out of one of the shift forks. And a torx bit I forget the size but I twisted 2 of them trying to get the 2 torx head bolts on the outside of the tranny loose.
There is a vendor that sells a special puller but I don't think they are a sponser. pm for vendors name.
Last edited by Rickyh93; Mar 12, 2008 at 09:17 PM.
Pro
Joined: Jan 2006
Posts: 643
Likes: 2
From: Alexandria Northern Virginia
Hey man,
I am not trying to discourage tinkering.....but....
When I was a tech for Ford, I had access to all the shop tools. My beater car was an 86 Aerostar 5 speed (hard to imagine a stick minivan!). It was a 22 minute job to pull the tranny. After 200K miles I was in and out of that thing pretty regularly (saving money, not time). Bottom line, there are wrenches that are super thin to hold things still while you turn others. There are clearances that might look ok to you but actually have too much slop, causing things to stick or to pop out of gear.
IMHO, you are running one of the finest engineered American sports cars of all time. You have 40K plus in a car, its worth the time and money to do it right the first time. Pull the tranny yourself, mail it off to Rodney and get it done right the first time. Return your few parts that you ordered and be done with it.
I would hate to see you post in this thread when its 78 and sunny in a few weeks with questions about how some cadmium plated prawl spring carrier was busted and you need a spare (its an old harley reference, they had different carriers that cause Sportsters to pop in and out of gear).
My unsolicited .25. Not doing the job twice is worth a fortune to me these days....
HTH,
Cassidy
I am not trying to discourage tinkering.....but....
When I was a tech for Ford, I had access to all the shop tools. My beater car was an 86 Aerostar 5 speed (hard to imagine a stick minivan!). It was a 22 minute job to pull the tranny. After 200K miles I was in and out of that thing pretty regularly (saving money, not time). Bottom line, there are wrenches that are super thin to hold things still while you turn others. There are clearances that might look ok to you but actually have too much slop, causing things to stick or to pop out of gear.
IMHO, you are running one of the finest engineered American sports cars of all time. You have 40K plus in a car, its worth the time and money to do it right the first time. Pull the tranny yourself, mail it off to Rodney and get it done right the first time. Return your few parts that you ordered and be done with it.
I would hate to see you post in this thread when its 78 and sunny in a few weeks with questions about how some cadmium plated prawl spring carrier was busted and you need a spare (its an old harley reference, they had different carriers that cause Sportsters to pop in and out of gear).
My unsolicited .25. Not doing the job twice is worth a fortune to me these days....
HTH,
Cassidy
Safety Car
Joined: Aug 2000
Posts: 4,933
Likes: 30
From: San Rafael CA
You really want to think long and hard about doing a tranny rebuild yourself .....
If you have the GM supplied Service Manual for the car; go to the MM6 section and you'll notice that it shows you how to remove and replace the tranny, and how to do some external things such as replace the reverse lockout solenoid, but there are NO instructions for doing a transmission rebuild.
Even for a dealer or other service shops, they don't rebuild trannies, they swap them for a "rebuilt" or "remanufactured" tranny.
If you've rebuilt other trannies, then the Corvette gearbox is doable. If this is your first "rebuild" I'd STRONGLY agree with the above post and ship the tranny to Rodney for them to do it for you.
http://www.rpmtransmissions.com
