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GM Hydra-Matic 10-speed vs. eight-speed gear ratios

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Old 06-23-2016, 03:03 PM
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Iker
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Default GM Hydra-Matic 10-speed vs. eight-speed gear ratios

A10-speed has more aggressive first gear ratio than GM’s eight-speed automatic.
Smaller steps between the gears also help the engine maintain the optimal speed for maximum power at almost all speeds.


Old 06-23-2016, 03:09 PM
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davepl
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Since the final overdrive is the same (.64 vs .65) I wonder if they'll be running the same final drive, and hence more 1st gear leverage, or if they'll change final drive, and hence lower highway cruise RPM.

Got to be one or the other!

I've still not personally seen any indication this will wind up in the C7 though, but I could be behind the news. Packaging is an issue for the rear-trans setup.
Old 06-23-2016, 04:06 PM
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BWFitz
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F
Old 06-23-2016, 04:47 PM
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davepl
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Originally Posted by BWFitz

F
Very compelling. Back to the ignore list for lonely trolls.
Old 06-23-2016, 05:31 PM
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BOBSZ06
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Will the A10 allow the Corvette meet the EPA mileage requirements and avoid the GGT?

Time will tell.............unless Tadge puts a totally new tranny (aka DCT) in the C8.

Last edited by BOBSZ06; 06-23-2016 at 05:32 PM.
Old 06-23-2016, 05:34 PM
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OmenSpeedWorks
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I think an in house DCT is on the way and the 10 speed/9spd is for the product lineup that can fit it.
Old 06-23-2016, 07:43 PM
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RandomTask
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Originally Posted by OmenSpeedWorks
I think an in house DCT is on the way and the 10 speed/9spd is for the product lineup that can fit it.
Tadge needs to walk into the business division and literally beat the **** out of every single one of them.

Only reason we suffer the A8 is because GM throws it in its trucks. If they can't amortize via multiple platforms a DCT, they won't do it.

WE WANT A DCT!

Last edited by RandomTask; 06-23-2016 at 07:43 PM.
Old 06-23-2016, 08:25 PM
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davepl
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Originally Posted by BOBSZ06
Will the A10 allow the Corvette meet the EPA mileage requirements and avoid the GGT?
GM didn't even know about the GGT on the A8 '15s until very late in the game, so no one will know what, if any, effect the A10 has until long after we've seen them - certainly no way to predict in advance. The EPA doesn't pre-test.

Last edited by davepl; 06-23-2016 at 08:25 PM.
Old 06-23-2016, 08:47 PM
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gurneyeagle
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Ford just announced the A10 is going in the 2017 Mustang.
Old 06-23-2016, 09:07 PM
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BJ67
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Originally Posted by gurneyeagle
Ford just announced the A10 is going in the 2017 Mustang.
Ford announced the 10 speed will be in the 2018 Mustang, the ZL1 Camaro will have it for 17. Camaro needs the edge for 1 year.

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