[SuperSound]

Originally Posted by Zeke.Malvo

I don't the A10 will make much difference vs the A8. The big difference in gearing comes in where they added a gear between approximately 100-140mph. A bigger difference will be a gain in mpg due to that added gear and an additional overdrive.

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The overall effective gearing is the major factor. The SS could benefit from something more aggressive than the current spread with 2.77 final. But I agree it won't be as major as the jump the Mustang got this year.

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[ULTRAZLS1]

Originally Posted by SuperSound

The overall effective gearing is the major factor. The SS could benefit from something more aggressive than the current spread with 2.77 final. But I agree it won't be as major as the jump the Mustang got this year.

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I picked up .2 from just a shorter tire at the track.

The SS could pick up quite a bit with more gear

[BlaqWhole]

Originally Posted by germanicus

You sure seem awfully obsessed and concerned with something you purportedly care nothing about. How many posts do you have in these versus threads?

The five stages:
Denial
Anger
Bargaining
Depression
Acceptance

And you seem awfully obsessed and concerned with everything I say. Why is that?

[BlaqWhole]

Originally Posted by SuperSound

The overall effective gearing is the major factor. The SS could benefit from something more aggressive than the current spread with 2.77 final. But I agree it won't be as major as the jump the Mustang got this year.

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It could benefit but I think it is better with the numerically lower gearing. The 2.77s along with the A8 and this engine it has makes it better as an all around weapon instead of being more suited for the quarter mile. This is actually the first vehicle I've seen where I preferred this type of gearing.

[DiGiam]

Originally Posted by Zeke.Malvo

I don't the A10 will make much difference vs the A8. The big difference in gearing comes in where they added a gear between approximately 100-140mph. A bigger difference will be a gain in mpg due to that added gear and an additional overdrive.

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Do you own an A8? The 5th gear, the gear you have to go in before you finish the 1/4, is completely wrong in this transmission. Ive got the data logs to show you. Most shift recovery rpm in gears 1-4 is 5200-5300 then shift at 6200-6300. The fifth gear in the A8 drops way down to 4800-5000 rpm and you can feel the car is out of its happy spot. Its the very reason why I think these cars have a harder time back halving at the track. If this gets corrected with the A10, we will pick up at least 1mph and a tenth with just that change I believe. I don't think 0-60 will change unless they go with a more aggressive rear gear but I doubt it because we have enough torque and it would only light up the tires worse.

[DiGiam]

I honestly believe they set it up this way to keep a gap between the vette and Camaro. It has 8 speeds so there is no reason at all to have it like it is.

[SuperSound]

Originally Posted by DiGiam

I honestly believe they set it up this way to keep a gap between the vette and Camaro. It has 8 speeds so there is no reason at all to have it like it is.

The Vette has the same ratios. But you are right, I looked at some of my runs. 4th to 5th does drop more RPM.

[DiGiam]

GM Hydra-Matic 10-speed vs. eight-speed gear ratios
Type:
10-speed automatic
eight-speed automatic
Gear ratios (:1)


First:
4.70
4.56
Second:
2.99
2.97
Third:
2.15
2.08
Fourth:
1.80
1.69
Fifth:
1.52 122mph at 6300rpm
1.27 147mph at 6300rpm
Sixth:
1.28
1.00
Seventh:
1.00
0.85
Eighth:
0.85
0.65
Ninth:
0.69
--
Tenth:
0.64
--
Reverse:
4.87
3.82

The A10 would have this car in the meat of its powerband in 5th vs the A8. Thats worth some mph and ET

[Zeke.Malvo]

Originally Posted by DiGiam

GM Hydra-Matic 10-speed vs. eight-speed gear ratios
Type:
10-speed automatic
eight-speed automatic
Gear ratios (:1)


First:
4.70
4.56
Second:
2.99
2.97
Third:
2.15
2.08
Fourth:
1.80
1.69
Fifth:
1.52 122mph at 6300rpm
1.27 147mph at 6300rpm
Sixth:
1.28
1.00
Seventh:
1.00
0.85
Eighth:
0.85
0.65
Ninth:
0.69
--
Tenth:
0.64
--
Reverse:
4.87
3.82

The A10 would have this car in the meat of its powerband in 5th vs the A8. Thats worth some mph and ET

I don't think it'll be worth as much as is being expected. Maybe about one mph, but probably less than .1 in the 1/4.

The A6 corvettes hold a disproportionately larger share of the fastest corvettes compared to the A8. Nothing was gained at all adding 33% more gears.

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[ULTRAZLS1]

Originally Posted by DiGiam

GM Hydra-Matic 10-speed vs. eight-speed gear ratios
Type:
10-speed automatic
eight-speed automatic
Gear ratios (:1)


First:
4.70
4.56
Second:
2.99
2.97
Third:
2.15
2.08
Fourth:
1.80
1.69
Fifth:
1.52 122mph at 6300rpm
1.27 147mph at 6300rpm
Sixth:
1.28
1.00
Seventh:
1.00
0.85
Eighth:
0.85
0.65
Ninth:
0.69
--
Tenth:
0.64
--
Reverse:
4.87
3.82

The A10 would have this car in the meat of its powerband in 5th vs the A8. Thats worth some mph and ET

Yep

That’s what my shorter tires did for me crossing the traps but still not nearly right. But I still picked up 2-3 mph. I need a 3.08 rear gear to be perfect with my current setup

[DiGiam]

Originally Posted by Zeke.Malvo

I don't think it'll be worth as much as is being expected. Maybe about one mph, but probably less than .1 in the 1/4.

The A6 corvettes hold a disproportionately larger share of the fastest corvettes compared to the A8. Nothing was gained at all adding 33% more gears.

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So then the new mustang didn't benefit from going from the A6 to the A10. The corvette A8 has the same 5th gear problem. It drops us out of the powerband too far. The A10 will correct it. Someone posted a stock A8 vs stock A10 mustang 40 roll race on YouTube and you can see the camaro clearly pulling the mustang until the camaro shift to 5th then you can see the mustang close the gap. Until he gets back in the powerband. I think it will be 1 mph and a tenth when the camaro gets the A10. I don't think GM will add any power because they are always so worried about upsetting vette owners and don't want it getting any closer to the ZL1.

[BlaqWhole]

I don't think GM should drop the A10 in the SS and therefore increase the price of the car just because it might slow up in a roll race. LOL! Not making fun of anyone with that comment. Just saying. Right now the SS has the performance advantage over the GT. The A8 has been fine all this time and the A10 in the GT isn't enough to turn the tide. And that is after Ford ropped a ton of upgrades into the GT. I think GM should offer it for the 7yh Gen. But it is just fine as it is now.

[SuperSound]

There's one solid reason to replace the 8L90....it's got serious unresolved issues with TC shudder. I'm hoping the 10 speed doesn't suffer from this same issue but time will tell.

[L99BEN]

Originally Posted by SuperSound

There's one solid reason to replace the 8L90....it's got serious unresolved issues with TC shudder. I'm hoping the 10 speed doesn't suffer from this same issue but time will tell.

That and the slow responding paddles.