Which automatic transmission will the 5th gen get?
12-05-2005 | 09:58 PM
#31
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Joined: Jun 2000
Posts: 2,801
From: South Bend , IN
Re: Which automatic transmission will the 5th gen get?
Originally Posted by thesoundandthefury
T-56 is just a model name for the 6-speed manual. It works the same as the 4L60/E.
4=#of gears, L=longitudinally mounted, 60=lb./ft. of torque handling capacity at the input shaft. (It's actually 600, which is divided by 2 by the torque converter.)
T-56 is: T=transmission, 5=#of regular gears, 6=# of gears with overdrive included. (Below final drive ratio of 1:1)
To say that the T-56 didn't go into the Vette until the first year of the C5 is false, because all 6-speed manual trannies are T-56's. ZF is just the name of a manufacturer, as is Tremec, which took over supply of T-56's at the onset of C5 production. T-56's for F bodies came from Borg Warner.
4=#of gears, L=longitudinally mounted, 60=lb./ft. of torque handling capacity at the input shaft. (It's actually 600, which is divided by 2 by the torque converter.)
T-56 is: T=transmission, 5=#of regular gears, 6=# of gears with overdrive included. (Below final drive ratio of 1:1)
To say that the T-56 didn't go into the Vette until the first year of the C5 is false, because all 6-speed manual trannies are T-56's. ZF is just the name of a manufacturer, as is Tremec, which took over supply of T-56's at the onset of C5 production. T-56's for F bodies came from Borg Warner.
T-56 = Tremec built 6 speed manual
The 2 do not share parts , and the ZF was quite abit more costly than the T56 . Not to sound like a *** , but I am right and know what Im talking about . The T56 is not a GM transmission per say or a GM designation . Its a Tremec name for this particular tranmission . The Tremec T56 is also used in non-GM cars like the Dodge Viper since its inception ( before any GM car used it ) , and the 2003-04 Mustang Cobra , and called a T56 in those cars as well . There are application specific versions , but all are called a T56 .
Last edited by 90 Z28SS; 12-05-2005 at 10:05 PM.
12-05-2005 | 10:19 PM
#32
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Joined: Sep 2003
Posts: 1,327
From: Hartford, CT
Re: Which automatic transmission will the 5th gen get?
Originally Posted by thesoundandthefury
T-56 is just a model name for the 6-speed manual. It works the same as the 4L60/E.
4=#of gears, L=longitudinally mounted, 60=lb./ft. of torque handling capacity at the input shaft. (It's actually 600, which is divided by 2 by the torque converter.)
T-56 is: T=transmission, 5=#of regular gears, 6=# of gears with overdrive included. (Below final drive ratio of 1:1)
To say that the T-56 didn't go into the Vette until the first year of the C5 is false, because all 6-speed manual trannies are T-56's. ZF is just the name of a manufacturer, as is Tremec, which took over supply of T-56's at the onset of C5 production. T-56's for F bodies came from Borg Warner.
4=#of gears, L=longitudinally mounted, 60=lb./ft. of torque handling capacity at the input shaft. (It's actually 600, which is divided by 2 by the torque converter.)
T-56 is: T=transmission, 5=#of regular gears, 6=# of gears with overdrive included. (Below final drive ratio of 1:1)
To say that the T-56 didn't go into the Vette until the first year of the C5 is false, because all 6-speed manual trannies are T-56's. ZF is just the name of a manufacturer, as is Tremec, which took over supply of T-56's at the onset of C5 production. T-56's for F bodies came from Borg Warner.
Someone already pointed out a few things youve got wrong in this post, but I'd just like to add that the T-56 was origionally made by Borg Warner. Tremec took over in 1998 I believe.
12-05-2005 | 11:50 PM
#35
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Joined: Aug 2003
Posts: 3,011
From: Exton, Pennsylvania
Re: Which automatic transmission will the 5th gen get?
To ad to that, I have read many old mag articles reviewing the 4th gens F-Bodies when they first arrived, and many of the reviewers would remark how the T-56 in the F-Bodies had a better shift feel to it than the Vette's ZF did.
To further backup everyone else's statement, the ZF trans and the T-56 trans are two different transmissions. The Vette didn't get the T-56 until the C5s were introduced.
To further backup everyone else's statement, the ZF trans and the T-56 trans are two different transmissions. The Vette didn't get the T-56 until the C5s were introduced.
12-05-2005 | 11:54 PM
#36
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Joined: Mar 2004
Posts: 4,306
From: Jersey Shore
Re: Which automatic transmission will the 5th gen get?
Originally Posted by Chris 96 WS6
No, if you understand automatic transmission (which I don't, but upon reading extensively a while back I understood them for a few minutes), its actually pretty easy to add a gear through a new planetary set. I've not seen one of these new 6 speed yet but my guess is its just an evolution of the 4 speeds and not a totally clean sheet design. So I don't think the cost would be much, if any, more.
12-06-2005 | 12:06 AM
#37
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Joined: Aug 2003
Posts: 3,011
From: Exton, Pennsylvania
Re: Which automatic transmission will the 5th gen get?
Originally Posted by Big Als Z
No, the 6spd is deffinatly a NEW design. Its modular to take on several types of cars from trucks to cars, 2, 4 and AWD. Its not a 4L60E with a new set of gears, its a whole new ball game. Hot Rod Mag did a whole thing on it, and the new 6L80E is about the size of a 4L60E....ripe for the transplant of MANY hot rods, and have the ability to hold up the power.
12-06-2005 | 08:07 AM
#38
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Joined: May 2004
Posts: 2,043
From: Shelbyville, IN
Re: Which automatic transmission will the 5th gen get?
Originally Posted by Chris 96 WS6
No, if you understand automatic transmission (which I don't, but upon reading extensively a while back I understood them for a few minutes), its actually pretty easy to add a gear through a new planetary set. I've not seen one of these new 6 speed yet but my guess is its just an evolution of the 4 speeds and not a totally clean sheet design. So I don't think the cost would be much, if any, more.
The 6 speed should be able to be a 5 speed if they just did some valvebody and hydraulic scheme changes. Just like the Allison 1000, it has 3 planetaries I believe and it was introduced as a 5 speed at the beginning. Now it's a 6 speed but all that was needed was a small valvebody change. It was actually capable of being a 6 speed since the beginning...
Gotta Love Marketing...
12-06-2005 | 09:14 AM
#39
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Posts: 2,926
From: Detroit
Re: Which automatic transmission will the 5th gen get?
Just comparing a 5 speed to a 4 speed auto is a huge difference, i can only image a 6 speed. manumatics? eh, those are a joke if you ask me, but im sure it would help sales If they want to 'enhance' the automatics, I wanna see instaneous rubber in between gears like you do with the old 727s and TH400s....but I know thats in never never land - only plush "refined" shifts with 2 second delays are acceptable in this day and age 
If they want to 'enhance' the automatics, I wanna see instaneous rubber in between gears like you do with the old 727s and TH400s....but I know thats in never never land - only plush "refined" shifts with 2 second delays are acceptable in this day and age
12-06-2005 | 12:17 PM
#40
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From: Hartford, CT
Re: Which automatic transmission will the 5th gen get?
Originally Posted by Chrome383Z
I would imagine it just has a 3rd planetary. I would also imagine that would require a new casting which is probably a large part of your costs... The internals might be similar.
The 6 speed should be able to be a 5 speed if they just did some valvebody and hydraulic scheme changes. Just like the Allison 1000, it has 3 planetaries I believe and it was introduced as a 5 speed at the beginning. Now it's a 6 speed but all that was needed was a small valvebody change. It was actually capable of being a 6 speed since the beginning...
Gotta Love Marketing...
The 6 speed should be able to be a 5 speed if they just did some valvebody and hydraulic scheme changes. Just like the Allison 1000, it has 3 planetaries I believe and it was introduced as a 5 speed at the beginning. Now it's a 6 speed but all that was needed was a small valvebody change. It was actually capable of being a 6 speed since the beginning...
Gotta Love Marketing...
05-04-2007 | 04:08 AM
#43
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From: The desert(for now)
05-10-2007 | 08:54 PM
#45
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From: Toronto, Canada
