[Z06] Difference between T6060 and T56 transmission?
03-14-2010, 11:17 PM
#21
Burning Brakes
The TR6060 will put up with stuff that will crack the housing on a T56.
I wonder how many guys actually had a genuine "problem" with the TR6060. The 2nd gear grind is not a transmission problem but rather a variant of normal operation while the transmission is warming up. The heavy duty synchronizers used require normal running temperatures to deliver peak performance. Aggressive operation of the shifter before the transmission has a chance to warm up can chew them up, but guys get frustrated and just jam the shifter into 2nd which is the last thing that should be done.
Two failures with that low of a mileage is usually operator induced or there was actually a problem the first time and then the dealer did not repair/reassemble the transmission properly which leads to a second failure. I have seen the dealers not fix them right more times than I can even count.
If the car is doing the 2nd gear grind/clunk when it's cold you have to just shift gently and let it do its thing. It will stop after a mile or two if nothing else is wrong with it.
I wonder how many guys actually had a genuine "problem" with the TR6060. The 2nd gear grind is not a transmission problem but rather a variant of normal operation while the transmission is warming up. The heavy duty synchronizers used require normal running temperatures to deliver peak performance. Aggressive operation of the shifter before the transmission has a chance to warm up can chew them up, but guys get frustrated and just jam the shifter into 2nd which is the last thing that should be done.
Two failures with that low of a mileage is usually operator induced or there was actually a problem the first time and then the dealer did not repair/reassemble the transmission properly which leads to a second failure. I have seen the dealers not fix them right more times than I can even count.
If the car is doing the 2nd gear grind/clunk when it's cold you have to just shift gently and let it do its thing. It will stop after a mile or two if nothing else is wrong with it.
03-14-2010, 11:45 PM
#22
Racer
I just did the c6z tranny/diff into a c5z and I took the t6060 apart and the design is better. I am no transmission expert but have been pulling wrenches long enough to see a vast improvement. When I took the t 56 out of my c5z and disassembled it the fourth gear/ counter shaft was sheared off. I also inquired about the 2006 up t 56 and was told it is a bigger better design than the c5z?? I have not repaired one so I don't know for sure. My 2007 Zo6 shifts way different than my original c5z did or the t6060..
03-16-2010, 11:29 AM
#23
Melting Slicks
TR6060 gears are 10% thicker, which obviously makes them stronger.
"Don't care much for the extra 40 lbs,"...gotta love how BS like this gets spread around, like how in the heck is a VERY similar trans gunna put on THAT much weight? Think about it for a second before you perpetuate BS.
So for the record, while I haven't weighed a TR6060 all by itself, I can tell you that when attached to a ZR1 diff the TR6060/ZR1 trans/diff combo ONLY weighs 4 lbs more than a T56/Z06 trans/diff combo (206 vs 202). Now given that there's no way a ZR1 diff is lighter than a Z06 diff it's pretty easy for me to conclude that a TR6060 is NOT 40 lbs heavier than a T56. Of course I can only say this because I've actually placed both on a scale, and since I didn't read it on the internet I may be wrong
Now since RPM told me the ZR1 diff was about 7 lbs heavier than the Z06 diff, it's very possible the T56/Z06 trans/diff I weighed wasn't completely empty of fluids even though it had been drained before removal from my car, while the TR6060/ZR1 trans/diff was new and thus completely empty. But regardless, there's no way there could have been more than a pound or two of fluids in the T56/Z06 stuff so it's probably fair to conclude the TR6060 is virtually no heavier than the T56 in spite of it's thicker gears.
Cheers, Paul.
"Don't care much for the extra 40 lbs,"...gotta love how BS like this gets spread around, like how in the heck is a VERY similar trans gunna put on THAT much weight? Think about it for a second before you perpetuate BS.
So for the record, while I haven't weighed a TR6060 all by itself, I can tell you that when attached to a ZR1 diff the TR6060/ZR1 trans/diff combo ONLY weighs 4 lbs more than a T56/Z06 trans/diff combo (206 vs 202). Now given that there's no way a ZR1 diff is lighter than a Z06 diff it's pretty easy for me to conclude that a TR6060 is NOT 40 lbs heavier than a T56. Of course I can only say this because I've actually placed both on a scale, and since I didn't read it on the internet I may be wrong
Now since RPM told me the ZR1 diff was about 7 lbs heavier than the Z06 diff, it's very possible the T56/Z06 trans/diff I weighed wasn't completely empty of fluids even though it had been drained before removal from my car, while the TR6060/ZR1 trans/diff was new and thus completely empty. But regardless, there's no way there could have been more than a pound or two of fluids in the T56/Z06 stuff so it's probably fair to conclude the TR6060 is virtually no heavier than the T56 in spite of it's thicker gears.
Cheers, Paul.
Last edited by MTIRC6Z; 03-16-2010 at 11:47 AM.
03-16-2010, 12:28 PM
#24
Le Mans Master
TR6060 gears are 10% thicker, which obviously makes them stronger.
"Don't care much for the extra 40 lbs,"...gotta love how BS like this gets spread around, like how in the heck is a VERY similar trans gunna put on THAT much weight? Think about it for a second before you perpetuate BS.
So for the record, while I haven't weighed a TR6060 all by itself, I can tell you that when attached to a ZR1 diff the TR6060/ZR1 trans/diff combo ONLY weighs 4 lbs more than a T56/Z06 trans/diff combo (206 vs 202). Now given that there's no way a ZR1 diff is lighter than a Z06 diff it's pretty easy for me to conclude that a TR6060 is NOT 40 lbs heavier than a T56. Of course I can only say this because I've actually placed both on a scale, and since I didn't read it on the internet I may be wrong
Now since RPM told me the ZR1 diff was about 7 lbs heavier than the Z06 diff, it's very possible the T56/Z06 trans/diff I weighed wasn't completely empty of fluids even though it had been drained before removal from my car, while the TR6060/ZR1 trans/diff was new and thus completely empty. But regardless, there's no way there could have been more than a pound or two of fluids in the T56/Z06 stuff so it's probably fair to conclude the TR6060 is virtually no heavier than the T56 in spite of it's thicker gears.
Cheers, Paul.
"Don't care much for the extra 40 lbs,"...gotta love how BS like this gets spread around, like how in the heck is a VERY similar trans gunna put on THAT much weight? Think about it for a second before you perpetuate BS.
So for the record, while I haven't weighed a TR6060 all by itself, I can tell you that when attached to a ZR1 diff the TR6060/ZR1 trans/diff combo ONLY weighs 4 lbs more than a T56/Z06 trans/diff combo (206 vs 202). Now given that there's no way a ZR1 diff is lighter than a Z06 diff it's pretty easy for me to conclude that a TR6060 is NOT 40 lbs heavier than a T56. Of course I can only say this because I've actually placed both on a scale, and since I didn't read it on the internet I may be wrong
Now since RPM told me the ZR1 diff was about 7 lbs heavier than the Z06 diff, it's very possible the T56/Z06 trans/diff I weighed wasn't completely empty of fluids even though it had been drained before removal from my car, while the TR6060/ZR1 trans/diff was new and thus completely empty. But regardless, there's no way there could have been more than a pound or two of fluids in the T56/Z06 stuff so it's probably fair to conclude the TR6060 is virtually no heavier than the T56 in spite of it's thicker gears.
Cheers, Paul.
WHen i read the post upstream, it did not make a lot of sense. I figured 5 to 7 lbs would be believable but 40lbs was
When looking at old car and driver mags and comparing the weight they listed for a 2006 versus a 2009 Z, I did not remember there being a discrepancy that large.
03-16-2010, 12:44 PM
#25
Instructor
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I've been into high performance cars for the last 11 years, 03+ cobras, a viper, lots of lt1/ls1 f-bodys etc... ranging from 500rwhp to 1100hp on a t-88 powered 382ci lt1 camaro. All had t-56, all had over 460 rwtq, all driven hard, and zero tranny failures with the exception of one firebird with twisted the input shaft at the clutch disk(which we upgraded to the billet viper shaft); which is no different then the input shaft of the t6060 btw.
My point is, the t56 is a proven transmission with many 1000+hp and sub 9 second 1/4mi applications. You cant go wrong with it and i'd rather go with the tried and true tranny IMO.
My point is, the t56 is a proven transmission with many 1000+hp and sub 9 second 1/4mi applications. You cant go wrong with it and i'd rather go with the tried and true tranny IMO.
03-16-2010, 04:48 PM
#27
CF Senior Member
I always take it easy when the car is cold. I shift from 1st to 3rd for a mile or so and no grind issues. After that, it shifts as smooth as butter in every gear.
03-16-2010, 05:05 PM
#28
Drifting
I've been into high performance cars for the last 11 years, 03+ cobras, a viper, lots of lt1/ls1 f-bodys etc... ranging from 500rwhp to 1100hp on a t-88 powered 382ci lt1 camaro. All had t-56, all had over 460 rwtq, all driven hard, and zero tranny failures with the exception of one firebird with twisted the input shaft at the clutch disk(which we upgraded to the billet viper shaft); which is no different then the input shaft of the t6060 btw.
My point is, the t56 is a proven transmission with many 1000+hp and sub 9 second 1/4mi applications. You cant go wrong with it and i'd rather go with the tried and true tranny IMO.
My point is, the t56 is a proven transmission with many 1000+hp and sub 9 second 1/4mi applications. You cant go wrong with it and i'd rather go with the tried and true tranny IMO.
07-08-2011, 04:25 AM
#29
Drifting
http://forums.corvetteforum.com/c6-z...e-trannys.html
Last edited by JeremyGSU; 07-08-2011 at 08:53 PM.
07-08-2011, 08:37 AM
#30
Former Vendor
The TR6060 is a vast improvement over the T-56. Having been working with 6 speed Tremec transmissions for many years, we can tell you that will absolute confidence. The only minor issue with the TR6060 is the cold driving issue with 2nd gear. It can be upgraded and the issue will all but go away. However, having driven many different manual transmissions over the years, its not an issue that is TR6060 specific. It is pretty much manual transmission specific. The easiest way to avoid the issue is to be very slow and precise with the shifter and clutch until the transmission gets up to temperature. After that, everything functions as intended.
07-08-2011, 08:51 AM
#31
Former Vendor
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St. Jude Donor '12
The TR6060 is a vast improvement over the T-56. Having been working with 6 speed Tremec transmissions for many years, we can tell you that will absolute confidence. The only minor issue with the TR6060 is the cold driving issue with 2nd gear. It can be upgraded and the issue will all but go away. However, having driven many different manual transmissions over the years, its not an issue that is TR6060 specific. It is pretty much manual transmission specific. The easiest way to avoid the issue is to be very slow and precise with the shifter and clutch until the transmission gets up to temperature. After that, everything functions as intended.
07-09-2011, 12:40 AM
#32
Law Dawg Moderator
Quite a few. I had considered getting an '08-'09 but I'm thinking '06 after reading about these problems. Look how many people replied on here with grinding issues. From '08's and '09's.
http://forums.corvetteforum.com/c6-z...e-trannys.html
http://forums.corvetteforum.com/c6-z...e-trannys.html
07, 08, 2nd, buy, c5, camaro, corvette, difference, differences, gear, problems, ratios, t56, t6060, transmission
