Paul Scarpelli

I understand the TR6060 is a derivative of the trusty T56 (which I had in my Vorteched Z-28, C5 and C6), and I assume it's more robust, but does anyone know any other specifics? Apparently, my '08 Z06 has a TR6060, which I just discovered. Sure feels like a T56, but with shorter throws.

Sorry if this is a dupe, and thanks.

02impactblue

I hear the t6060 grinds 2nd and 3rd when cold and t56 doesn't.

MTIRC6Z

Completely off topic, but every time I see a post from you I want to ask if you race bicycles? I found one of the best things about the C6Z is the fact that I can easily get a bike in the back and with a little extra effort have actually gotten TWO of them back there. Awesome way to get to races.

Cheers, Paul.

jerseydrew

i have heard that the 6060 has wider gears (more robust) and more syncros. the 6060 adds one more syncro between every gear when compared to the t56. it also has a higher torque rating. and if i am not mistaken it has the larger spline input shaft on it from the get go.

Zoeaux6

I have it in the dealer now for a windshield replacement and had them note this. I am not going to push it unless it is still there down the road. I don't think it relates to the CAGS (1-4 shift), which I am going to cut out soon, but those are the locked out gears.

EdwardETraylorIII

I can tell you that Paul does indeed race bicycles. However, he's a bit of an azzclown, so be vigilent if you ever ask to see his Schwinn....

The TR6060 is a relatively updated version of the T-56. Many differences internally. The biggest complaint is that when cold it's a bit hard to shift [quickly].

I'd advise you to call George at MGW and get an after market shifter. This won't help with cold/hard shift issue - but it will make shifting in general a much more precise and pleasant experience! The Z06 is a completely different animal with one of these shifters!!! ZERO downsides to this mod! It won't even void your warranty!

I remember thinking, "Wow, the factory shifter is SO improved over the C5 unit.. HOW ON EARTH COULD IT GET ANY BETTER?" Well, get a MGW shifter and you will see for yourself... Lot's of room for improvement!

Heck, Paul, I'll even fly out and install it for you. This time, don't try to grab my azz, though!

Paul Scarpelli

I've used a C5, C6, and now my Z06 to get bikes to races. Lots of room, and great gas mileage. I'm injured this year, but I'm still a category 2, even at 62 years old. Six state championships and many Gold, Silver, and Bronze at the Huntsman World Senior Games. Keep riding...

V Amazed

I can confirm this. Made me feel like an idiot when it happened (both in 2nd and 3rd), as I consider myself a pretty good driver, and it never happened in my '06 coupe. Anyhoo, GREAT transmission, GREAT drivetrain, GREAT CAR!

Ben

AraiGP4

From the posts, it would appear that the "new" T6060 is more robust, but the "old" T56 shifts more smoothly. I'm very pleased with the T56 in my '07 Z06. Much better gearchanges than the T56 in the '05 Z51 that preceded it. My guess is that GM will have improved the T6060 in the '09, much as they improved the T56 in the '07.

ByByBMW

Having not had a T56, I can't compare but I have had no grinding in any gear even with cold. Now maybe it's a lower temperature thing. My nights are usually no colder than 70-72. Are the folks with grinding gears starting out at colder temps than I am?

1.8t

According to the corvette quartly magazine, this is what they said about the new TR6060 manual tranny:



"Changes for 2008 include wider gears for increased torque capacity, higher-capacity synchronizers, finer splines and machined teeth for the dog clutches, and new single-piece shift forks. For increased stiffness at the front of the transmission, the oil-circulating pump has been moved inside the case and its flow rate has been increased by 15%. Various ribs, reinforcements, and flange thicknesses are increased, and the countershaft is a new, more robust single-piece design. Differential ring and pinion gears are now shot-peened twice for enhanced durability, and the span between their support bearings has been increased to the Z06 dimension. All said an done, over 90% of the components are altered from the T56 transmission. There was also a 10% reduction in motion and effort"

Obviously, the modifications to this transimission were much more than we were originally led to believe. I only pulled the related material from the article.

TAILWAG

I now have an 08 and traded an 06 to it so I have been familiar with both.

The biggest complaint I had on my 06 was that sometimes it would feel a little weird, and take extra effort putting it on 1st gear. Also, I had difficulty putting it on reverse from time to time.

Never had I had any grinds or misshifts, up until the point something went wrong and then it was rebuilt under warranty.

The 08 new tranny feels a lot better overall...no grinds, smoother shifting. I have yet to experience the 2nd to 3rd issue lots of people comment about...but I only have about 1,300 miles on my 08....

Paul Scarpelli

Well, I asked for opinions, and (thanks) now here are mine:

My first T56 was in a Vortech-supercharged F-body, and with a Hurst shifter, it was not perfect, but it was close. The 2-3 upshift was clean. My C5 and C6 also had the T56, and throws were too long, 3rd was hard to shift to fast, and I had to hunt for 1st and reverse.

The TR6060 has shorter throws, almost like the Hurst, it's a bit smoother and less notchy (still not a Honda shifter ), and I actually can find 1st and reverse. Not getting my '05 Z51 into reverse all the way caused me dead battery syndrome around eight times, which started to become an annoyance. (I understate... )

I think a good aftermarket shifter would make this car even better. I'm sure that's a separate thread, but what works best? I vowed this would be the first car I've owned since 1968 that didn't get modded, but yesterday I pulled the exhaust fuse, I'm looking for a shifter, headers seem "worthwhile"...Crap. Here we go.

Jorday

It's strange reading all of this because my 08 shifts smoothly and easily even when cold. My 07 was notchy and required a lot more effort to shift.

jerseydrew

i think the tranny issue is because people start their vette and let the engine "warm up" and forget that all the other fluids in the car are "cold" so they take off and all of a sudden the trans is a bit rough at first. i don't have grinding in my 08 but you can tell it is not loosened up at first. i start my car, let it idle for 30 seconds to a minute just to let the oil get moving then i start driving. by the time the oil temp is up and ready so is the rest of the car and no issues to rip on it once everything is warm. too often i have read (especially on this board) about cold tranny's, well what do you expect if the gears aren't turning then it doesn't warm up till you put on a few miles.

427Z

looks like they are talking about the 08 C6 tranny in the above quote.

EdwardETraylorIII

Paul,

I can't believe you had a chance to slam me and you didn't take it!!!

Yes, get the MGW shifter @ http://www.mgwltd.com/

As for George.

Best $200 bucks you'll ever spend. That and a few hundred bucks for a CAI (Cold Air Intake)!!! Those two mods alone make the C6Z a much more refined, performance oriented, vehicular!

427Z

george is a nice guy but that shifter must be experienced before purchased. i was sorely disapointed in its notchiness, he-man level shift effort, and rattle