Recent content by lowderkg
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Major upgrades GMT800, 06ish XL 2500
Oh I so appreciate the replies. After reading, a six speed would not be economically feasible. As to what I will end up within the next 1- 60 days (contingent what on market) as to if it is a 3.73 or a 4.10 is unclear. But I am a buyer either way as I been on look out for a GMX XL 2500, even if...- lowderkg
- Post #6
- Forum: Engine & Drivetrain
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Major upgrades GMT800, 06ish XL 2500
Newbie here. Gonna buy 2003--2006 Yukon XL, SLT W/ 8.1. Once rig here, one of the big "to do" on bucket list is upgrade tyranny to best there is. Forgive my Naiveté as relates to engine/tranny/rear end. But would it be possible to upgrade from 4 speed to like a 5-6 speed, ie 6L90 ? If I...- lowderkg
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- transmission
- Replies: 11
- Forum: Engine & Drivetrain
