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 > New Ram/Cummins vs GM/Duramax on the IKE

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RCMAN46

NorthWest

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Posted: 06/30/19 06:08pm Link  |  Quote  |  Print  |  Notify Moderator

Bigfoot affair wrote:



Allison 10L100

1st- 4.54 x 3.42 x 910= 14,129 lb-ft
2nd- 2.86 x 3.42 x 910= 8,900 lb-ft
3rd- 2.06 x 3.42 x 910= 6,411 lb-ft
4th- 1.72 x 3.42 x 910= 5,353 lb-ft
5th- 1.48 x 3.42 x 910= 4,606 lb-ft
6th- 1.26 x 3.42 x 910= 3,921 lb-ft
7th- 1.00 x 3.42 x 910= 3,112 lb-ft
8th- .85 x 3.42 x 910= 2,645 lb-ft
9th- .68 x 3.42 x 910= 2,116 lb-ft
10th- .63 x 3.42 x 910= 1,960 lb-ft


Can you provide a link to your source for the gear ratios.

ShinerBock

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Posted: 06/30/19 06:08pm Link  |  Quote  |  Print  |  Notify Moderator

Hmm, and it appears that GM will only be offering a 3.42 rear end with the diesels in both SRW and DRW versions. So I would not expect a much different outcome with the 3500 DRW version of this truck other than it weighing slightly more than what was used.

ShinerBock

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Posted: 06/30/19 06:09pm Link  |  Quote  |  Print  |  Notify Moderator

RCMAN46 wrote:



Can you provide a link to your source for the gear ratios.


CHEVROLET DEBUTS ALL-NEW 2020 SILVERADO HD

ksss

Eastern Idaho

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Posted: 06/30/19 06:09pm Link  |  Quote  |  Print  |  Notify Moderator

Grit dog wrote:

Cummins12V98 wrote:

The 10 speed with lower combined load should have stomped the measly 6 speed with 6 tires dragging the road.

Same downhill braking. GM should have been better with lighter load and higher revving engine to give more braking HP.

Heavier combined load but better economy.

How many here still think the “BRANDED” 10 speed is the Savior???


Put 4.10 gears behind the 10speed and then sit back and watch. Have to build the driveshaft outta drill stem!


Especially with no nannies to control the power.


2006 GMC 3500 CC 4X4 DRW D/A
2013 Fuzion 342
2011 RZR Desert Tan
2012 Sea Doo GTX 155
2018 Chevy 3500HD CC LB SRW 4X4 D/A
2015 Chevy Camaro ZL1

Bigfoot affair

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Posted: 06/30/19 06:10pm Link  |  Quote  |  Print  |  Notify Moderator

ShinerBock wrote:

Bigfoot affair wrote:



Allison 10L100

1st- 4.54 x 3.42 x 910= 14,129 lb-ft
2nd- 2.86 x 3.42 x 910= 8,900 lb-ft
3rd- 2.06 x 3.42 x 910= 6,411 lb-ft
4th- 1.72 x 3.42 x 910= 5,353 lb-ft
5th- 1.48 x 3.42 x 910= 4,606 lb-ft
6th- 1.26 x 3.42 x 910= 3,921 lb-ft
7th- 1.00 x 3.42 x 910= 3,112 lb-ft
8th- .85 x 3.42 x 910= 2,645 lb-ft
9th- .68 x 3.42 x 910= 2,116 lb-ft
10th- .63 x 3.42 x 910= 1,960 lb-ft



Thank you for the correct gear ratios. I have been trying to find them to no avail. I still seems that 1-6 are underdrive, 7th is direct, and 8-10 are overdrive. So even with a 3.42 rear end the GM was sending more torque to the wheels than a Ram 6-speed with a 4.10 rear end.


You're welcome. I found them here-> 2020 Silverado press release

ShinerBock

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Posted: 06/30/19 06:10pm Link  |  Quote  |  Print  |  Notify Moderator

ksss wrote:


Especially with no nannies to control the power.



According to GM, a 3.42 is all you get with a diesel.

wnjj

Cornelius, Oregon

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Posted: 06/30/19 06:19pm Link  |  Quote  |  Print  |  Notify Moderator

ShinerBock wrote:

Hmm, and it appears that GM will only be offering a 3.42 rear end with the diesels in both SRW and DRW versions. So I would not expect a much different outcome with the 3500 DRW version of this truck other than it weighing slightly more than what was used.

Are the DRW tires the same diameter as the SRW?

RCMAN46

NorthWest

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Posted: 06/30/19 06:29pm Link  |  Quote  |  Print  |  Notify Moderator

ShinerBock wrote:

RCMAN46 wrote:



Can you provide a link to your source for the gear ratios.


CHEVROLET DEBUTS ALL-NEW 2020 SILVERADO HD


Thank You I did a lot of searching and not find that one. A lot of good information on that link.

ShinerBock

SATX

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Posted: 06/30/19 06:29pm Link  |  Quote  |  Print  |  Notify Moderator

wnjj wrote:

ShinerBock wrote:

Hmm, and it appears that GM will only be offering a 3.42 rear end with the diesels in both SRW and DRW versions. So I would not expect a much different outcome with the 3500 DRW version of this truck other than it weighing slightly more than what was used.

Are the DRW tires the same diameter as the SRW?


Not sure, all it says is that the DRW 3500 diesel is 551 lbs heavier than the 2500 diesel. I would not imagine the tire diameter is that much smaller or the extra 551 lbs would make a significant difference in the outcome.

FishOnOne

The Great State of Texas

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Posted: 06/30/19 07:22pm Link  |  Quote  |  Print  |  Notify Moderator

wnjj wrote:

ShinerBock wrote:

Hmm, and it appears that GM will only be offering a 3.42 rear end with the diesels in both SRW and DRW versions. So I would not expect a much different outcome with the 3500 DRW version of this truck other than it weighing slightly more than what was used.

Are the DRW tires the same diameter as the SRW?


I posted a link to Mr. Trucks interview of a GM engineer. He stated the brakes are essentially the same do to the 17" tires.


'12 Ford Super Duty FX4 ELD CC 6.7 PSD 400HP 800ft/lbs
"Built Ford Proud"
'16 Sprinter 319MKS "Wide Body"


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