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Who has 4.56 Gears in there 8 speed transmission?

NEMESIS-A/T
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NEMESIS-A/T
NEMESIS-A/T

Im scheduled to have my gears installed in 2 weeks by East Coast Gear Supply, and I have decided to go with 4.56 gears. I have a 2016 GMC 4x4 with a 10" lift and running 38" tires. I currently have 3.

gone_fishing
gone_fishing

I'm no gear expert but found a calculator to compare ratios and tire size: http://www.dieselhub.com/tech/ratio-tool.html   "Original" is based on a factory 32" with a 3.42 axle and the 8L90'

Nosaves
Nosaves

What a monster of a truck lol awesome. 

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dieselfan1 Senior Enthusiast

dieselfan1

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On 5/7/2019 at 11:34 AM, NEMESIS-A/T said:

I will not do what most have done with there gear threads. After I have gotten a feel for the temperament of the gears, I will post MPH and RPM comparisons. 

Have you gotten a feel yet??

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