2020-2025 Silverado & Sierra Duramax L5P SunCoast Category 1 10L1000 Transmission Features:
- Raybestos Powertrain GPZ Frictions
- Raybestos Powertrain Steels
- 10L1000 Transmission Overhaul Kit
- Pan Filter
- 10L1000 Deep Cast Aluminum Pan (4 quarts over stock)
- New OEM CDF drum assembly
- Testing and recalibration of valve body assembly
- Torque converter not included, but is highly recommended
The 10L1000 Category 1 Transmission
Enter the awe-inspiring Allison 10L1000, a marvel of engineering born from a groundbreaking collaboration between Allison and Ford. This transmission redefines the very essence of its predecessor, the Allison 1000, boasting a design so revolutionary that it transcends its lineage. It's not just a transmission; it's a symphony of power and precision.
Introducing the SunCoast 10L1000 Category 1 Transmission, engineered to be a reliable upgrade over factory options, especially for heavy-duty work environments. We've focused on addressing common issues encountered in demanding scenarios to ensure durability and performance when it matters most.
With the SunCoast 10L1000 upgraded transmission assembly, you can expect improvements in areas like durability, torque handling, and overall reliability. Whether you're hauling heavy loads, towing, or navigating rough terrain, this transmission is built to handle the rigors of tough jobs without skipping a beat.
Our design enhancements mean fewer breakdowns and less downtime, translating to increased productivity and lower maintenance costs for your vehicle. Plus, the SunCoast 10L1000 is designed for easy installation, minimizing hassle, and maximizing uptime.
Upgrade to the SunCoast 10L1000 transmission and experience peace of mind knowing your vehicle is equipped to handle the toughest challenges your work environment throws its way. It's a practical solution that delivers real-world benefits for your business or personal use.
The Rebuilding Process
Experience the SunCoast 10L1000 transmission rebuild process—a blend of precision and practicality that elevates reliability to new heights. We start by disassembling the transmission and removing all worn "soft parts" to make room for a fresh start.
Our specialized hot solvent wash tank, heated to a robust 198 degrees, becomes the gateway to cleanliness as casing and housings undergo thorough cleansing. This step ensures a pristine foundation for the transmission's revival.
As the components emerge, they face scrutiny from our skilled technicians. Hard parts undergo meticulous inspection, with any signs of wear or damage identified and addressed. Only those fit for duty proceed to the next phase.
The casing receives special attention, with every nook and cranny inspected for flaws or fractures. This critical step ensures structural integrity, safeguarding against future issues.
What emerges from this process is not just a transmission, but a testament to reliability and performance. With the SunCoast 10L1000, you're not just getting a product—you're investing in peace of mind and dependability for the road ahead.
Raybestos Frictions & Steels
Raybestos Powertrain GPZ friction clutch plates greatly increase transmission performance and durability. This state-of-the-art friction material far exceeds OE material to withstand high stress, high temperatures, and repeated cycling. GPZ's outstanding performance benefits are perfect for heavy-duty vehicles and high-stress driving. Testing of GPZ revolutionary friction material shows that it outperforms OE materials by as much as 20%.
Raybestos Powertrain steel clutch plates are high-quality, application-engineered products at a price you can afford. Manufactured with attention to critical tolerances and quality control, our steel plates meet or exceed OE specifications and have a superior surface finish that supplies a greater apply area and friction clutch life. Raybestos steel plates give better shift performance and clutch durability, lowering noise and shudder, and extending the life of your transmission.
Features & Benefits
- Better shift performance and clutch durability
- Enhanced shift feel
- Withstands high horsepower
- Greater torque capacity
- Maintains piston travel
- Optimum performance
- Higher heat resistance
- Made In USA
- OE thickness for maximum heat sink
- Superior surface finish for greater apply area and friction clutch life
- Meets or exceeds OE specifications for flatness and parallelism
- Flawless fit without binding
The Deep Pan
Number of Bolts: 16 bolts (18 holes, 16 bolt holes, and 2 holes to locate gasket)
Volume: 4 quarts over stock
Dimensions: At deepest area, PML pan is 7 inches; stock pan is 4.3 inches
This new deep pan is a designed and manufactured 10L1000 Allison transmission pan for 2020 and newer Duramax trucks. The design focuses on maintaining the general shape of the OEM pan while adding extra capacity and a finned bottom for heat dissipation.
Benefits of Deep Pan Design
- Extra capacity
- Finned to increase surface area for heat dissipation
- Drain and magnetic drain plug
- Thick walls and gasket flange
- Heavy duty construction
- Shape similar to OEM pan to replicate fluid flow and dynamics of OEM pan
- Deep sump middle design avoids clearance issues with any cross-frame members or exhaust packages
Fitment:
- 2020-2025 Silverado 2500 6.6L Duramax with 10L100 transmission
- 2020-2025 Sierra 2500 6.6L Duramax with 10L100 transmission
- 2020-2025 Silverado 3500 6.6L Duramax with 10L100 transmission
- 2020-2025 Sierra 3500 6.6L Duramax with 10L100 transmission
For 4WD trucks only: this transmission will only fit trucks with 4-wheel drive (4WD). A version meant for 2-wheel drive (2WD) models is also available.
Rated for up to 550 horsepower: this transmission is rated for up to 550 crankshaft horsepower and is meant for trucks with mild modifications and tuning or trucks that are towing heavy near stock power levels. If your truck is near or at the 550 horsepower mark and towing heavy, we strongly recommend jumping up to the SunCoast Category 2 transmission.
Torque Converter not included: this transmission does not come with a torque converter. A performance torque converter is strongly recommended. Check out our
Duramax 10L1000 torque converters.
For 2020-2025 Silverado & Sierra 2500 & 3500 Only: this transmission will only fit 2020-2025 Silverado and Sierra 2500 and 3500 trucks that came from the factory with 10L1000 automatic transmissions.
Recommended gearing: the following gearing is recommended for the following tire sizes:
- 35" Tire: 3.73 gears or higher
- 37" Tire: 4.10 gears or higher
- +38" Tire: 4.56 gears or higher
Core charge: this transmission includes a $3500.00 core charge that will be refunded once SunCoast receives your stock transmission, inspects it, and finds it acceptable condition.
Freight Shipping: this transmissions ships via freight. Please carefully inspect your transmission before signing your Bill of Lading. If your transmission arrives damaged, please call us directly at 602-399-5484.
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