Calibrated Power | 2001-2005 GM LB7 / LLY Allison 6 Speed Conversion Kit

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Enhance multiple aspects of your ride with the Duramaxtuner 6 Speed conversion kit! Take your 2001-2005 Allison to another level by adding a sixth gear! Custom TCM tuning for your specific truck Double Overdrive = 14% RPM reduction All new valve body, wiring harness, and solenoids Lowered road noise Gear indicator works on Edge CTS monitor Works with high idle, retrofit tap shifters In addition to helping keep your truck on the road longer, something you will notice is the added bump in fuel economy. This is especially true for those of us logging long commutes via highway. Fewer RPMs, the better your fuel economy. Picking up just a little bit goes a long way while putting on the commuting miles. You’ll also notice how much quieter your ride will be when adding our kit to your truck. NVH (Noise, vibration, and harshness) will decrease drastically, giving you a much more enjoyable ride. Give us a call if you have any further questions and one of our reputable sales staff will be happy to answer any questions! Show more