Re: Any Duramax owners out there?
My daily driver, a 2000 Yukon XL that has a 02 Sierra 2500 LB7 with Allison along with 14 bolt full floater rear end. Went from 11 mpg with 4.10 gears in a 6.0l to 19mpg with 3.73 gears and LB7. Love the power in an SUV.
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