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**57taskforce** · 11-11-2018, 06:40 PM

Yep the 11.5 at least in the 99-06 trucks was only behind the Allison whether it be the duramax or the 8.1. All the other hd trucks had the regular old 10.5. My 18 Sierra has the 10.5.

11-11-2018, 06:40 PM	#9
57taskforce All about them K’s Join Date: Jun 2014 Location: Land of Entrapment Posts: 6,582	Re: Dually 14 bolt Yep the 11.5 at least in the 99-06 trucks was only behind the Allison whether it be the duramax or the 8.1. All the other hd trucks had the regular old 10.5. My 18 Sierra has the 10.5. __________________ Tyler '57 3100 http://67-72chevytrucks.com/vboard/s...d.php?t=813888 '72 K20 Cheyenne: 5” lift, 35’s, front dana 60 blah blah blah… http://67-72chevytrucks.com/vboard/s...d.php?t=662879 ‘69 K10 SWB: 4” lift 33”s… in a million pieces http://67-72chevytrucks.com/vboard/s...d.php?t=805206 '98 Silverado LT K2500HD ECLB Vortec 454/4l80E: 6" lift 35x12.5x20’s