Diesel Tuner's Blog

Will a 6 Speed Conversion Kit Pay for Itself?

[fa icon="calendar'] Feb 8, 2018 10:03:00 AM / by Paul Wilson posted in better mpg for lly, how to get better fuel mileage with LLY, LLY mpg, LB7, Transmission Duramax, 6 Speed Conversion Kit

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6 Speed Conversion Kit for the LB7 & LLY 5 Speed Allison:

Your 2001-2005 Silverado/Sierra HD diesel is powered by either the LB7 (2001-2004) or LLY (2004.5-2005) Duramax.  That Duramax is tied to one of the most popular automatic transmissions, the Allison 1000.

While the Allison 1000 was a big step forward, it still needed improvement.  The LB7/LLY models came with 4 gears and Overdrive, or "5 speed".   In 2006 General Motors (GM) released the 6 Speed transmission for the new at the time LBZ model and other HD trucks. 

Without getting too technical about how automatic transmissions work, they did not actually add a physical gear.  The Allison works through a series of clutch packs being applied with hydraulic pressure to create different gear ratios.  What GM actually did was design a brand new valve body and improved tuning to achieve the 6 speed Allison 1000.

I need a 6 Speed Conversion!

DuramaxTuner.com now has a 6 Speed Conversion Kit which includes a new valve body and custom tuned TCM that allows your truck to achieve 6th gear.  

Who Will The 6 Speed Conversion Kit Help?

  • Owners wanting a quieter ride
  • Drivers looking for a smoother shifting transmission
  • Highway commuters
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Top 3 mods for your LLY Duramax

[fa icon="calendar'] Jan 11, 2016 8:30:00 AM / by Paul Wilson posted in Insider, Duramax Performance, Mods, LLY Tuning, better mpg for lly, how to get better fuel mileage with LLY, LLY Mods, dsp, dsp5, lly performance, DuramaxTuner.com, LLY Intake, EFILive, efi live, switchable tuning, LLY, duramaxtuner, Modifications, What should i do first, what tuning should i get for my LLY, Duramax, switch on the fly tuning, LLY mpg

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  • The LLY Duramax  is a great truck from the factory for there are 3 modifications every owner should make! The LLY was manufactured 2004.5 and 2005. There are a few 2006 models that are labeled as an LLY, however they have all of the LBZ upgrades from the factory, so for performance applications consider those an LBZ. An LLY was the first Duramax with the injectors outside of the heads, a variable vane turbo and a 50 state EGR.

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