Diesel Tuner's Blog

Are You Getting Enough With 5 Gears??

[fa icon="calendar'] Jun 7, 2018 1:00:00 PM / by Justin Tyson posted in LLY, LB7, Transmission Duramax, 6 Speed Conversion Kit

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The Six Speed Conversion Kit from duramaxtuner.com has been unleashed and it’s a proven winner.  The fifth gear days of yore have passed the world by and the 2001-2005 LB7 and LLY owners are loving how much more the extra gear brings them.  Large amounts R&D and testing has given 5 speeds a better shift schedule and the highest quality 5-6 and 6-5 shifts. The upgraded valve body with have your aging truck shifting like a new model.

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3 Tips to Prevent 2001-2005 Duramax ECM's From Crashing!

[fa icon="calendar'] Feb 9, 2018 2:00:00 PM / by Paul Wilson posted in lly performance, LB7, LLY TCM Tuning, LB7 TCM Tuning

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What crashes an LB7 and LLY ECMs?:

If you have a 2001 - 2004 (LB7) or 2004.5 - 2005 (LLY) Duramax and have been thinking about tuning it, this article is for you. 

As you're probably aware, ECMs have some small risk of crashing during a tuning flash.  Browsing the forums online you definitely already picked up on the fact that the LB7 and LLY ECMs are more suscepitble to the issue.

To make sure you aren't stuck stranded somewhere far from home follow these tips: 

  • Disconnect all aftermarket electronics
  • Make sure your batteries are at a full charge
  • Flash your truck at home or a local garage
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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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Who Needs 6th Gear? LB7/LLY 6 Speed Conversion!

[fa icon="calendar'] Dec 20, 2017 10:00:00 AM / by Paul Wilson posted in LLY, LB7, 5 Speed, 6 Speed Conversion Kit

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5 to 6 Speed Allison Conversion:

The Allison 1000 transmission equipped in the 2001-2005 HD Silverado and Sierra was considered to be revolutionary when it was released. 

 

Owners rave about the smoothness and reliability of the 5 speed Allison transmissions.  They're able to reliably handle the strain of towing heavy and still have reasonable street manners for commuting.  Duramaxtuner has recently invested considerable time into the AL5 controller to build out the shift shedule and quality of all the 5-6 and 6-5 shifts.  Matched with our upgraded valvebody this kit will have your 15 year old truck shifting like a 2018 model. 

As most technology has advanced over the last 12+ years, so has transmission technology.  You've probably noticed that just about everything on wheels has more gears these days.  Starting in 2006 all Duramax powered GM trucks were given an extra overdrive gear (.61).  Since then, they haven't looked back. 

Why is that?  Why does your truck need more gears? 

Benefits from more gears:

  • MPG improvement 
  • Noise Reduction
  • Parts Longevity
  • Narrower Cruise range to meet Emissions Requirements
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STEALTH TURBO PRICE UPDATE

[fa icon="calendar'] Oct 23, 2017 2:44:13 PM / by Paul Wilson posted in LLY, LML, Cummins Turbo, LBZ, LML Power, Stock Turbo, Stealth 64, LB7, Stealth, LML Performance, LMM, LB7 Turbo, Bolt on turbo, LBZ Turbo, LMM Turbo, LML Turbo, Diesel Turbo Options Duramax, Diesel Turbo Options Cummins, Duramax Turbo, LLY Turbo, Turbo Upgrades, LB7 Turbo Upgrade, 640HP LB7, Stealth 64G2, Stealth VVT, Stealth 64 LML

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We have lowered our MAP pricing on the Stealth 64 Turbo:

Calibrated Power, home of DuramaxTuner.com, has ramped up in-house production of the Stealth Turbo line.  This added capacity and volume of turbo production has provided an opportunity to lower MAP pricing on all Duramax models and allowed the Cummins 5.9L Stealth 64 to be a low price and top quality leader in it's category. 

Our Stealth 64 Turbo's are:

  • Made in the USA!
  • Upgraded, Drop-In Replacement!
  • Quick Spooling with Big POWER!
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Stealth 64 G2, New & Improved 640HP LB7 Drop-In Turbo

[fa icon="calendar'] Aug 15, 2017 1:50:12 PM / by Paul Wilson posted in Drop-In, Stealth 64, LB7, LB7 Turbo, Bolt on turbo

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640HP with this completely drop-in turbo:

The Drop-In turbo options for your 2001-2004 GM diesel Duramax are generally limited to about 600 RWHP.  Finally there is an option to take your truck that little bit extra without sacrificing drive-ability. 

The new Stealth 64 G2 is a direct replacement for your stock turbo.  It requires no additional hardware, pedestal, coolant line re-route or anything else.  Utilize your factory down pipe and retain a completely stock appearing turbo.

LB7 Stealth 64G2 Info Request

Stealth 64 G2 Unique Features:

  • 640 RWHP capable
  • Stock-like spool up
  • Great for towing and performance
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640HP LB7 Turbo

[fa icon="calendar'] Aug 11, 2017 8:30:00 AM / by Paul Wilson posted in Drop-In, Stealth 64, LB7, LB7 Turbo, Bolt on turbo

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640HP with this completely drop-in turbo:

The Drop-In turbo options for your 2001-2004 GM diesel Duramax are generally limited to about 600 RWHP.  Finally there is an option to take your truck that little bit extra without sacrificing drive-ability. 

The new Stealth 64G2 is a direct replacement for your stock turbo.  It requires no additional hardware, pedestal or coolant line re-route.  Utilize your factory down-pipe and retain a completely stock appearing turbo while being able to make up to 640RWHP. 

LB7 Stealth 64G2 Info Request

Stealth 64 G2 Unique Features:

  • 640 RWHP capable
  • Stock-like spool up
  • Great for towing and performance
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'03 Duramax in a '58 Apache, ApacheMax Build Thread 1

[fa icon="calendar'] Jun 23, 2017 9:43:00 AM / by Paul Wilson posted in LB7, apache, build thread, apachemax

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ApacheMax Build Thread, 1

 

This 1958 Chevy Apache pickup started life in Michigan.  Eric Kock had bought the truck new in 1958 and drove it daily while logging in the UP.  

While Eric owned the truck it had a hard life, being worked on logging trails and used like a truck everyday.  However, he took great care of it and actually did a frame up restoration twice while he had the truck. 

In 2013 it made it's way to DuramaxTuner.com with the original paint  scheme still intact. 

The original plan for the truck was to swap the body onto a GM 2500 HD chassis and throw an LB7 Duramax motor and driveline in it.  It sounds simple right? Originally there were no plans on doing a fully built motor and since it was going to mate up to a ZF6 the plan only included an aftermarket clutch.  In the end, it turned out to be "Something the Terminator would drive" (Nick Preignitz).

Create Your Own Custom Diesel Build!
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3 Things Your 600HP LB7 Build Must Have

[fa icon="calendar'] Jun 14, 2017 8:50:00 AM / by Paul Wilson posted in Duramax Performance, dsp5, EFILive, Duramax Power, LB7, SPADE, Fass, Lift Pump, CTS2

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Your 600HP Duramax Needs These 3 Things:

There are a lot of part combinations that can take your 2001-2004 Duramax to 600HP.  No matter what selections you make, there are 3 things you have to include if you want to keep your truck healthy and making power.

Here are some other articles about LB7 trucks:

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'85 Square Body fitted on a 640HP Duramax

[fa icon="calendar'] Mar 1, 2017 4:00:00 PM / by Paul Wilson posted in LB7, Stealth, Scottsdale

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Scottsdale Duramax

This 1985 Scottsdale pickup truck started life with a 6.2L diesel motor.  That's right, the non-turbo, under-powered, over weight regular cab had a dismal 130 horse power from the factory.  

We love the body lines and nostalgia of these trucks.  The swap being partially done prior to it coming to us DuramaxTuner.com was an appealing feature to this build.  This provided a solid head start on a project truck we intended to use for testing.  

 

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