Quote:
Originally Posted by zraffz
Trans changed with the body style in the 3/4 ton. The 6 liter/4L80E tows like a mushy pedal pig with a lot of weight and do poorly on fuel.
The 8.1 was known to burn tremendous amounts of oil between services.
The 6 speed 6L80E (or is it actually the 6L90E) with the 6.0 tows much nicer and does a phenomenal job of engine braking.
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I always get tied up with the 2007.5 and just say 2008 and newer.
My 6.2/4L70E/4.10 gears tow great... mileage certainly sucks.
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1999 Z28 Convertible. 6 speed swap, wide cowl hood, full hockey stripes, and a whining 10 bolt.
2008 Sierra Vortec Max. 6.2 swapped, headers, Magnaflow catback, GMPP CAI, NHT optioned tow package.
2006 GTO, 11.48 @ 118.3
Last edited by NJ Torque; 03-14-2016 at 04:08 PM.
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