[KMPrenger]

Apparently some of you guys can't read, or you just like to take what you think you read and then run with it to make your preferences look better.

Please go back and read the official release documents on the A8 transmission. It was stated that the "faster than PDK" shifts were only during upshifts, under WOT conditions. That's it.

http://www.camaro5.com/forums/showthread.php?t=373898

In fact, in the 2015 Corvette Stingray, it enables a class-leading 29-mpg EPA highway estimate – a 3.5-percent increase in fuel economy over the previous six-speed automatic – and a quicker 0-60 time of 3.7 seconds, all while delivering wide-open-throttle upshifts quicker than those of the dual-clutch transmission offered in the Porsche 911.

...

In fact, a new, Gen II transmission controller analyzes and executes commands 160 times per second, and wide-open throttle upshifts are executed up to eight-hundredths of a second quicker than those of the dual-clutch transmission offered in the Porsche 911.

So everyone here whining about how the thing doesn't shift lighting fast all the time....just stop it.

The A8 does have a bit of a normal lag under regular, or even just semi aggressive street driving, but when its at good operating type and WOT conditions, she shifts quickly. I don't care how fast some of you guys think you can shift your car manually...Under WOT conditions, the time it takes for me to press a button and the car shift is (if at all) just mere fractions of a second longer than it takes for you to push in the clutch and bang into the next gear... if you are even that good. The difference is so negligible, its not worth arguing.

The A10 is going to be similar, but likely even better than the A8 in WOT shifting, which is just awesome. If the around the town shifting, and downshifting are better also, that's just icing on the cake.

[Katastrophe]

Originally Posted by Mr. Wyndham

I don't recall this being posted, yet...

Attachment 794753

Cool! Thanks!

Some ghetto (rough and not 100% exact) calculations show...

...with a 28 inch tire, a 3.15 rear gear and a 6.5K RPM redline:

1st - 35.1 Mph
2nd - 55.2 Mph
3rd - 76.7 Mph
4th - 91.7 Mph
5th - 108.6 Mph
6th - 128.9 Mph
7th - 165.0 Mph
8th - 194.1 Mph
9th - 239.1 Mph
10th - 257.8 Mph

Top gear RPM's at specific speeds:

60 Mph - 1500 Rpm
65 Mph - 1650 Rpm
70 Mph - 1750 Rpm
75 Mph - 1900 Rpm
80 Mph - 2000 Rpm
85 Mph - 2150 Rpm
90 Mph - 2250 Rpm
95 Mph - 2400 Rpm
100 Mph - 2500 Rpm

Again, not 100% exact, but close enough to give us a good idea of what to expect. I'm not familiar with what rear gears GM likes to use (I have more knowledge with Ford and specifically, the Mustang) so I just chose the base auto gear for that car.

Coincidentally, it seems to be a great gear choice (IMHO - I wouldn't go numerically higher, that's for sure) given the transmission ratios...

[khell86]

Originally Posted by Johnman

I think it's odd that Ford would develop such a transmission when it has a longtime policy of not offering automatic transmissions on it's top performance models (Shelbys, ST's, the new Focus RS, etc.). Is that policy going to change now?

I'm pretty confident we'll finally see an auto in the GT500.

[OldJedi]

Originally Posted by 20171LE

I agree with you 100% and had the same experience and opinion.
But, according to the trolls, that makes us "clueless" and "know it alls".

Well over my many, many years I have been called far worse!

[OldJedi]

Originally Posted by Katastrophe

Cool! Thanks!

Some ghetto (rough and not 100% exact) calculations show...

...with a 28 inch tire, a 3.15 rear gear and a 6.5K RPM redline:

1st - 35.1 Mph
2nd - 55.2 Mph
3rd - 76.7 Mph
4th - 91.7 Mph
5th - 108.6 Mph
6th - 128.9 Mph
7th - 165.0 Mph
8th - 194.1 Mph
9th - 239.1 Mph
10th - 257.8 Mph

Top gear RPM's at specific speeds:

60 Mph - 1500 Rpm
65 Mph - 1650 Rpm
70 Mph - 1750 Rpm
75 Mph - 1900 Rpm
80 Mph - 2000 Rpm
85 Mph - 2150 Rpm
90 Mph - 2250 Rpm
95 Mph - 2400 Rpm
100 Mph - 2500 Rpm

Again, not 100% exact, but close enough to give us a good idea of what to expect. I'm not familiar with what rear gears GM likes to use (I have more knowledge with Ford and specifically, the Mustang) so I just chose the base auto gear for that car.

Coincidentally, it seems to be a great gear choice (IMHO - I wouldn't go numerically higher, that's for sure) given the transmission ratios...

I wonder what the gas mileage is at 257 MPH?

Thanks for posting this. My guess would be a a 3.27 rear end ratio.

[SuperSound]

Originally Posted by OldJedi

I wonder what the gas mileage is at 257 MPH?

Thanks for posting this. My guess would be a a 3.27 rear end ratio.

Considering there is a 2.40 something in the ZO6 I would bet it will low (numerically) with the 10 speed.

Sent from my SAMSUNG-SM-G920A using Tapatalk

Edit: It's a 2.41 for the ZO6 A8.

[crabman]

Originally Posted by KMPrenger

Apparently some of you guys can't read, or you just like to take what you think you read and then run with it to make your preferences look better.

Please go back and read the official release documents on the A8 transmission. It was stated that the "faster than PDK" shifts were only during upshifts, under WOT conditions. That's it.

http://www.camaro5.com/forums/showthread.php?t=373898



So everyone here whining about how the thing doesn't shift lighting fast all the time....just stop it.

It's a good idea to believe all the ad copy you read because ads never lie. Mufflers really do net you 40 hp, intakes 20... Yes, that's ad copy in your link. There is no benchmark by which shifts are measured, no standard, no meaningful comparison can be made by any of these claims by any OEM because they are just that, claims. They can say anything they want and its meaningless.

In most respects that is the same sort of ad copy they spouted over the A8 that at no throttle setting comes even close to the PDK which they said was its benchmark and a benchmark they had met. Yet even an ordinary layman without special instruments or skills can tell it isn't true. The claim was a lie.

Jedi and others are right. I've been watching GM spin truth about sub par automatics for years. Remember how the A4 was good enough and no one needs a six speed? They just made it to stop the whining as they said. Then they build an A8 which in its first iteration shifted slower than a Grand Cherokee. Yes really, the 14 8 speed GC next to the brand new C7 at a stop light had a more sophisticated and faster shifting trans in it. Now the A8 is better but despite their claims its still not close to a PDK. What will the 10 bring? I've no idea but I'll believe whatever it is when its proven in the real world. What I wont believe is GMs ad copy. Personally I'll be happy if the 10 speed is the best thing to come along since jiggling boobs because I don't care which stick I have in the fire, I just want the one I'm holding to be the best I can do.

[SuperSound]

Originally Posted by crabman

In most respects that is the same sort of ad copy they spouted over the A8 that at no throttle setting comes even close to the PDK which they said was its benchmark and a benchmark they had met. Yet even an ordinary layman without special instruments or skills can tell it isn't true. The claim was a lie.

Then they build an A8 which in its first iteration shifted slower than a Grand Cherokee. Yes really, the 14 8 speed GC next to the brand new C7 at a stop light had a more sophisticated and faster shifting trans in it.

You've spouted this BS before and I called you out on it. Then you dropped it. I agree there's no real "metric" for shift times, but you can not visibly/or with timing equipment can prove the PDK shifts faster than the 8L90 in AUTO mode at WOT.

So again post proof your Grand Cherokee shifts faster than an 8L90 or drop it. By your own post you can't prove it.

[Zeke.Malvo]

Originally Posted by HCT

I've seen "transmission wars" break out a bunch of time in web forums, generally ending with a lot of name-calling. Here's my take:

Driving a stick is inarguably the most involving and emotional way to drive a sports car. Anyone who denies that is ignorant or a troll.

And up until a few years ago, a stick was also the best choice for both fuel economy and maximum performance. But those days are long gone. Anyone who thinks a manual gearbox can yield lap times or 1/4 mile times on par with the best auto boxes is ignorant or a troll.

Nobody claimed to make lap times or quarter times on par with the best auto boxes.

Have you driven a DCT before? There is zero satisfaction manually shifting them (same with a standard auto). On top of that, from my experience from a few M3's I've driven, DCT's in the M3's drive like crap.

[ChefBorOzzy]

That's funny.. I drove a 2015 Grand Cherokee last night and the transmission is a bit lethargic in it.. The 8 speed in the Camaro I drove definitely seemed better done. The ZF in my girlfriend's A4 seems to work better than in the three Chrysler products I've driven.

[HCT]

Originally Posted by SuperSound

Considering there is a 2.40 something in the ZO6 I would bet it will low (numerically) with the 10 speed.

Sent from my SAMSUNG-SM-G920A using Tapatalk

Edit: It's a 2.41 for the ZO6 A8.

That'll be good for 0-60 times then. You'll be able to hit 60 in second. In fact you might be able to just start in second and skip shifting at all!

[HCT]

Originally Posted by Zeke.Malvo

Have you driven a DCT before? There is zero satisfaction manually shifting them (same with a standard auto).

Yes I have. And I found it perfectly satisfying. I liked the super fast shifts and not worrying about things like money shifts or heel-toeing. It let me focus more on other aspects of my driving. But this is all very subjective. We just have different preferences.

[ccflgearhead]

Gonna poke the bear....so this sounds like it shifts as fast as my SRT 8sp auto. OK, so GM finally caught up with the Torqueflite with its lightening fast shift speeds, but added 2 more gears. It is disappointing to see the Gen 6 Camaro suffer from "paddle lag" which the TF doesn't in the Challenger.

[SuperSound]

Originally Posted by ccflgearhead

Gonna poke the bear....so this sounds like it shifts as fast as my SRT 8sp auto. OK, so GM finally caught up with the Torqueflite with its lightening fast shift speeds, but added 2 more gears. It is disappointing to see the Gen 6 Camaro suffer from "paddle lag" which the TF doesn't in the Challenger.

Just as long as you remember FCA didn't develop it. They bought the license to manufacture it from ZF.

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