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SUNCOAST ALLISON CAT1 500 HP REBUILD KIT WITH CONVERTER (GMAX-CAT1-LBZLMM-KIT) FOR 2006-2010 DURAMAX LBZ / LMM

$4,195.00

Out of stock

The SunCoast Allison CAT1 500 HP Rebuild Kit with Converter (GMAX-CAT1-LBZLMM-KIT) is a high-performance transmission upgrade for 2006–2010 Duramax LBZ and LMM trucks. Designed to handle up to 500 horsepower, it includes upgraded clutches, steels, gaskets, and a precision-built torque converter for better torque transfer and efficiency. Ideal for towing, daily driving, and moderate performance use, the kit improves shift quality, holding capacity, and transmission reliability. It’s a durable, trusted solution backed by SunCoast’s reputation for quality and innovation.

Description

The SunCoast Allison CAT1 500 HP Rebuild Kit with Converter (GMAX-CAT1-LBZLMM-KIT) is a premium transmission upgrade designed for 2006–2010 Duramax LBZ and LMM trucks. Engineered to handle up to 500 horsepower, this comprehensive kit includes all the essential components needed to rebuild and enhance the performance and durability of your Allison transmission. It features upgraded clutches, steels, and gaskets, along with a precision-built torque converter optimized for improved torque transfer and efficiency. Ideal for towing, daily driving, and moderate performance applications, the SunCoast CAT1 kit ensures smoother shifts, increased holding capacity, and greater reliability under demanding conditions. Whether you’re looking to boost your truck’s capabilities or simply reinforce your transmission for long-term dependability, this kit offers a trusted solution backed by SunCoast’s reputation for quality and innovation.

Additional information

Weight 45 lbs
Dimensions 19 × 16 × 13 in
Brand

Fitment

 2006-2010 DURAMAX LBZ / LMM

Features

  • SunCoast proprietary C1, C2, C3, and C4 Alto carbonite frictions/Rabestos SCZ frictions that contain no center slots. These frictions utilize a waffle pattern in the material to help retain oil helping the clutch cool when not applied.
  • Redesigned apply pistons with improved rubber compounds proven to hold higher heat. This custom piston allows us to use a thicker spring apply plate which replaces the thin OEM one that will cone and cause uneven apply surface resulting in premature clutch failure.
  • Custom SunCoast apply plate that redirects fluid to better lubricate frictions from the inside out which lubes the entire friction rather than OEM style that lubricates from the center out leaving the inner half of the clutch burnt.
  • Includes exclusive smart trim / clutch control valve.
  • Includes all items needed to modify the C2 clutch piston for increased clutch durability.

SunCoast Category kits offer our customer the same recipes as our in house builds that have been proven for years both at the track and on the road. Our Category 1 Allison rebuild kit offers the customer our 500 horsepower Allison rebuild. This rebuild kit includes everything you will need to build your Allison the same we we build here in house. This Allison rebuild kit also includes detailed instructions that will walk you through each step of the process.

SunCoast Allison 1000 torque converters come in many varieties, from heavy hauling, sled pulling, drag racing, to daily driving. SunCoast designs and manufactures their torque converters in-house. Because of this, SunCoast can supply most any request in regards to stall or torque multiplication. All SunCoast triple disc converters are outfitted with a heavy duty forged billet steel cover and give an unbeatable lock up performance. Increased stall is usually needed in applications where a larger turbo or turbos have been installed and more RPM is required to get the turbo on boost while on the brakes (brake boosting).

All of the SunCoast Allison 1000 torque converters come standard with custom pump and turbine modifications (in house). SunCoast also Tig Welds each individual furnace brazed fin for improved reinforcement. The SunCoast Allison billet triple disc converter also comes standard with our proprietary trapezoidal clutch teeth.

These Suncoast Allison triple disc billet torque converters also features a billet apply piston that ensure zero deflection.

Standard Features:

  • Custom pump and turbine modifications (in house)
  • Tig welding to reinforce furnace brazed fins
  • Proprietary converter clutches with trapezoid clutch teeth (no round tabs)
  • Forged billet cover strength (proprietary Raybestos converter)
  • 3 year unlimited mileage warranty

Includes

  • SunCoast custom clutch packs
  • SunCoast custom Steels
  • SunCoast custom billet plates
  • SunCoast custom overhaul kit
  • Valve body calibration kit
  • SunCoast gasket kit
  • Pan Filter
  • Spin on filter
  • Pan gasket
  • SunCoast Filter Loc
  • New internal wiring harness
  • SunCoast Triple Disc Billet Category 1 Converter

Warning

Proposition 65

This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov.

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