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- GMT K2xx Trucks General Discussion (https://www.performancetrucks.net/forums/gmt-k2xx-trucks-general-discussion-221/)

- - 8spd gears? (https://www.performancetrucks.net/forums/gmt-k2xx-trucks-general-discussion-221/8spd-gears-545170/)

62nalide

07-27-2016 12:07 PM

8spd gears?

I love my 2016 6.2 8spd but after my headers install it feels a little sluggy down low. Anyone done gears on these yet? What GM gears can I go to. Any 3.73s out there?

RS/SS 4.8

07-27-2016 12:15 PM

I think the rearend is still a 14 bolt on the 6.2 trucks. The 5.3/4.3 have the new 12 bolt.

07Softail

07-27-2016 01:15 PM

14 and up have new 12 bolts....6.2's have the 12 bolt 9.76 R&P and 3.73's are available for those. The 5.3's have the 12 bolt 9.5 R&P. 3.73's would be damn near perfect.

RT

62nalide

07-27-2016 02:44 PM

So I can order 3.73s for these trucks through GM? :)

07Softail

07-27-2016 06:13 PM

Yes and you won't regret!

RT

62nalide

07-27-2016 06:21 PM

Quote:

Originally Posted by 07Softail (Post 5371967)

Yes and you won't regret!

RT

Would you happen to have a part #? for a 4x4

07Softail

07-27-2016 06:44 PM

I do not but AAM makes the axle assemblies for out trucks

RT

madmann26

07-27-2016 06:55 PM

Did you tune it afterwards?

62nalide

07-27-2016 07:34 PM

Quote:

Originally Posted by 07Softail (Post 5371970)

I do not but AAM makes the axle assemblies for out trucks

RT

Sweet thanks
Going to call tomorrow

62nalide

07-27-2016 07:35 PM

Quote:

Originally Posted by madmann26 (Post 5371971)

Did you tune it afterwards?

Yes made 374rwhp 422rwtq ran best of a 8.82 in the 1/4 vs it's 9.17 stock

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