10-29-2011, 08:39 AM | #1 |
Cooter
Drives: my wife crazy Join Date: Oct 2011
Location: SW WI
Posts: 569
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Gear Ratios
I'm kinda at a loss here. I know in the CTS-V the auto is actually faster than the manual. But I seen that the ZL1 is going to have different gear ratios than the CTS-V so maybe GM improved on this a bit for the ZL1.
CTS-V Gear Ratios 1st: 3.01 2nd: 2.07 3rd: 1.43 4th: 1.00 5th: 0.84 6th: 0.57 ZL1 Gear Ratios 1st: 2.66 2nd: 1.78 3rd: 1.30 4th: 1.00 5th: .80 6th: .63 I do not know anything about gear ratios and was hoping somebody with some more knowledge would chime in and give their opinion on the ZL1s gear ratios. I know we don't have the gear ratios, not that I've seen, for the auto, but assuming that it's the same as the CTS-V, would the ZL1 manual gear ratios help it be more on par with the auto?? I keep going back and forth between the auto and the manual. I love the idea of having launch control but I think the auto might be faster. Any thoughts?? BTW, I'm not trying to start an Auto vs Manual debate. I know this has been covered.. |
10-29-2011, 09:31 AM | #2 |
THE CAMARO KING
Drives: 2012 Camaro ZL1 on order #PZSD7S Join Date: Aug 2006
Location: Out Somewhere Driving My 'BADZL1'
Posts: 2,284
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2010 Hydra-Matic 6L90 (MYD)
Hydra-Matic 6L90 six-speed RWD/AWD Car and Truck automatic transmission 2010 Model Year Summary Carryover features and benefits from 2009 model year 2010 applications: New: GMT 610 Full Size Vans. Carryover : Chevrolet Silverado 2500 HD, GMC Sierra 2500 HD, Chevrolet Suburban 2500 HD, GMC Yukon XL 2500HD, Cadillac CTSv - Increased Torque & Power Capacity for High Performance passenger car. Increased torque capacity The Hydra-Matic 6L90 allows higher-torque output engines to be used in truck applications that do not require a heavy-duty, commercial-style transmission, and in high performance passenger cars. Overview The Hydra-Matic 6L90 is six-speed automatic transmission for rear- and four-wheel-drive trucks, designed with modular flexibility and compatibility with advanced electronic controls. It is a heavy-duty version of the 6L80 six-speed automatic, with a strengthened input gearset which has two additional pinion gears for six total, and a strengthened output gearset, that uses wider gears than the 6L80. The 6L90 flexibilty extends to the clutches where the 6L90 has one more clutch plate than the 6L80 in each clutch for heavy duty applications. There is also a 6L90 "Lite" version without the additional clutch plate to more closely match application requirement where appropriate. The 6L90 shares about 75 percent of the parts as the 6L80, although the case of the 6L90 is 35mm longer than the 6L80 case. The 6L90 has the capability for adaptive shift controls and other features such as grade braking, and Driver Shift Control with tap up/tap down shifting. A wide overall ratio spread of 6.04:1 allows a "steep" first gear, as well as very "tall" overdrive top gear for low-rpm highway cruising. With this wide ratio spread, acceleration is maximized, as is fuel economy. Engine noise is also lower during cruising. Both fifth and sixth gears are "overdrive" gears, for example. As in the 6L80, gear changes from second to sixth gears are accomplished with clutch-to-clutch control, where an oncoming clutch is engaged and an "offgoing" clutch is released in a precise manner to achieve the ratio change. The first-to-second upshift, however, is a freewheeling action, where the second gear clutch engages while the first gear one-way clutch spins freely. This allows a greater degree of smoothness at lower vehicle speeds. The clutch-to-clutch shifting and single freewheeler allows significant reductions in packaging requirements. Advances in transmission control modules allow the modules to exist reliably inside the transmission, where temperatures remain fairly constant compared to a body-mounted module. The transmission and module are assembled together, so no additional steps are necessary during vehicle assembly. The 32-bit transmission control module (TCM) monitors transmission performance and compensates for normal wear in components such as clutch plates, so transmission performance remains consistent for the life of the transmission. The control module also "tests" the components of the transmission following assembly to optimize the interaction of the components. The module is compatible with future global applications. DEXRON VI premium fluid validated to improve durability and shift stability and was developed to have a more consistent viscosity profile; a more consistent shift performance in extreme conditions; and less degradation over time. Internal GM tests have demonstrated DEXRON VI delivers more than twice the durability and stability in friction tests compared to existing fluids. The DEXRON VI fluid was designed specifically and validated for the new family of GM six-speed automatic transmissions. The 6L90 variant of the new Hydra-Matic six-speed automatics centers on the desire for common components and manufacturing tooling. The 6L90 six-speed contains three gearsets, a conventional input planetary gearset with six pinion gears, as well as one compound output gearset and one simple output gearset. The compound output gearset uses three sets of pinion gear pairs, with one set of pinions meshing with the sun gear and the other set with the ring gear. This arrangement allows for optimal ratio steps with a 6.04 overall ratio spread. The torque converter is 300mm in diameter, and is available with a single-plate or dual plate (for extreme high torque applications) lockup clutch, which makes use of GM's proprietary electronic controlled capacity clutch (ECCC) technology, which uses a small, regulated amount of slip to dampen out engine pulses. This creates a smoother running drivetrain, especially during shift events. Low maintenance For severe use, DEXRON VI fluid changes are the only maintenance recommended. For normal use there is no fluid change scheduled. The Hydra-Matic 6L90 is produced in Ypsilanti, Michigan and Toledo, Ohio
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2012 Camaro ZL1 Car Name: Bruce
ZL1, LSA, MN6/MG9, DSX, RTQ, VR, Current Status: 2030 1000 Initial Order 11/11/2011 Chevyland 1100 Order accepted at dealer: 11/11/2011 - PZSD7S 2000 Order accepted by GM: 12/14/2011 3000 Accepted By Production Control: 00/00/2011 - TPW 00/00/2011 3100 Sequenced: 00/00/2011 3300 Scheduled For Production:0/0/2012 3400 Broadcast: 0/0/2012 3800 Produced: 0/0/2012 4000 Available To Ship: 0/0/2012 4200 Shipped: 0/0/2012 5000 Delivered To The Dealer: 0/0/2012 6000 Delivered To Customer:0/0/2012 |
10-29-2011, 09:36 AM | #3 |
THE CAMARO KING
Drives: 2012 Camaro ZL1 on order #PZSD7S Join Date: Aug 2006
Location: Out Somewhere Driving My 'BADZL1'
Posts: 2,284
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Gear ratios:
First: 4.03 Second: 2.36 Third: 1.53 Fourth: 1.15 Fifth: 0.85 Sixth: 0.67 Reverse: -3.06
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2012 Camaro ZL1 Car Name: Bruce
ZL1, LSA, MN6/MG9, DSX, RTQ, VR, Current Status: 2030 1000 Initial Order 11/11/2011 Chevyland 1100 Order accepted at dealer: 11/11/2011 - PZSD7S 2000 Order accepted by GM: 12/14/2011 3000 Accepted By Production Control: 00/00/2011 - TPW 00/00/2011 3100 Sequenced: 00/00/2011 3300 Scheduled For Production:0/0/2012 3400 Broadcast: 0/0/2012 3800 Produced: 0/0/2012 4000 Available To Ship: 0/0/2012 4200 Shipped: 0/0/2012 5000 Delivered To The Dealer: 0/0/2012 6000 Delivered To Customer:0/0/2012 |
10-29-2011, 09:42 AM | #4 | |
THE CAMARO KING
Drives: 2012 Camaro ZL1 on order #PZSD7S Join Date: Aug 2006
Location: Out Somewhere Driving My 'BADZL1'
Posts: 2,284
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Quote:
I would like to clarify the ratios you posted. These you posted above are for the MG9 and not the MYD so there is no confusion.
__________________
2012 Camaro ZL1 Car Name: Bruce
ZL1, LSA, MN6/MG9, DSX, RTQ, VR, Current Status: 2030 1000 Initial Order 11/11/2011 Chevyland 1100 Order accepted at dealer: 11/11/2011 - PZSD7S 2000 Order accepted by GM: 12/14/2011 3000 Accepted By Production Control: 00/00/2011 - TPW 00/00/2011 3100 Sequenced: 00/00/2011 3300 Scheduled For Production:0/0/2012 3400 Broadcast: 0/0/2012 3800 Produced: 0/0/2012 4000 Available To Ship: 0/0/2012 4200 Shipped: 0/0/2012 5000 Delivered To The Dealer: 0/0/2012 6000 Delivered To Customer:0/0/2012 |
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10-29-2011, 09:45 AM | #5 |
CaRaHoLiC
Drives: '12 ZL1,67 Cam,68 Biscayne 427 4 sp Join Date: Aug 2011
Location: B.C. Canada
Posts: 1,701
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Whats MG9? There is no MG9 on the order sheet. The manual trans is MN6.
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10-29-2011, 09:57 AM | #6 | |
THE CAMARO KING
Drives: 2012 Camaro ZL1 on order #PZSD7S Join Date: Aug 2006
Location: Out Somewhere Driving My 'BADZL1'
Posts: 2,284
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Quote:
Make sure you are not ordering a SS... Very possible. I do not know why the correct RPO would not be reflecting the correct transmission. MN6 is found in SS I believe... MN6 while is a 6 speed, is NOT the same gear set for ZL1. Hope that helps.
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2012 Camaro ZL1 Car Name: Bruce
ZL1, LSA, MN6/MG9, DSX, RTQ, VR, Current Status: 2030 1000 Initial Order 11/11/2011 Chevyland 1100 Order accepted at dealer: 11/11/2011 - PZSD7S 2000 Order accepted by GM: 12/14/2011 3000 Accepted By Production Control: 00/00/2011 - TPW 00/00/2011 3100 Sequenced: 00/00/2011 3300 Scheduled For Production:0/0/2012 3400 Broadcast: 0/0/2012 3800 Produced: 0/0/2012 4000 Available To Ship: 0/0/2012 4200 Shipped: 0/0/2012 5000 Delivered To The Dealer: 0/0/2012 6000 Delivered To Customer:0/0/2012 |
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10-29-2011, 10:20 AM | #7 |
Cooter
Drives: my wife crazy Join Date: Oct 2011
Location: SW WI
Posts: 569
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Thanks for the information MY68RS!
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10-29-2011, 10:41 AM | #8 |
Resident Disciple
Drives: 2010 CTS-V 6MN '98 Camaro SS (Sold) Join Date: Dec 2007
Location: Roches Point, Ontario, Canada
Posts: 607
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There are 2 codes that appear on each manual transmission vehicle. MN6 refers to the fact that it is a manual transmission vehicle and MG9 is the RPO code for the specific gearset used in the TR6060 for the ZL1 (and CTS-V).
Best regards, Elie
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2010 Cadillac CTS-V 6MN Thunder Gray
1998 Camaro SS # C079 SOLD |
10-29-2011, 11:28 AM | #9 |
Use the Force
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ZL1 is supposed to get an MG9 HD 6 Speed manual.
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Walk softly, carry a light saber and drive a ZL1!
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10-29-2011, 12:25 PM | #10 |
Use the Force
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Elie, I see you sold your 98 SS, are you getting a ZL1 ???????
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Walk softly, carry a light saber and drive a ZL1!
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10-29-2011, 12:33 PM | #11 |
Drives: 2017 ZL1 Status "Thank You!" Join Date: Feb 2009
Location: SC
Posts: 2,498
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ALA 1969 Rock Crusher? Bet So! It's going to be a real monster tamer! You won't be able to hurt that thing.
I'm going with Auto simply due to physicial limitations, but, I will always admire the stick shift and the heavy duty nature of this one! Good going! Let's ALL keep in close contact here as we go to get our Traditional Orders system modifications next week! Have a GREAT WEEKEND ALL!! |
10-29-2011, 01:35 PM | #12 |
CaRaHoLiC
Drives: '12 ZL1,67 Cam,68 Biscayne 427 4 sp Join Date: Aug 2011
Location: B.C. Canada
Posts: 1,701
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wierd. well the number on the quick order is definately MN6, so if that is the generic term for manual trans then I guess thats it..Auto is MXO
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10-29-2011, 03:05 PM | #13 |
Resident Disciple
Drives: 2010 CTS-V 6MN '98 Camaro SS (Sold) Join Date: Dec 2007
Location: Roches Point, Ontario, Canada
Posts: 607
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Well, I sold the SS (and accompanying '97 Bonneville L67 winter beater) to get the V.
I'm holding my breath, waiting to see what price GM Canada puts on the ZL1 and will hopefully have an opportunity to drive one at some point in the new year. I can't see keeping the V and a ZL1, so I guess I'll have to wait until a few more unknowns become a bit more clear to me. The V is one amazing car, but I've learned to "never say never"! Best regards, Elie
__________________
2010 Cadillac CTS-V 6MN Thunder Gray
1998 Camaro SS # C079 SOLD |
10-29-2011, 05:08 PM | #14 | |
Use the Force
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Quote:
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Walk softly, carry a light saber and drive a ZL1!
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