Find Parts For Your Truck
Shopping for
2005 Chevrolet 6.6L Duramax LLY
SKU #: SC-10R140-CAT2D MPN #: 10R140-CAT2D

SunCoast Category 2 10R140 Expanded Capacity Transmission 18-24 Ford 6.7L Powerstroke

$8,394.75
Get 8394 points in loyalty rewards

Please agree to the Terms and Conditions to Defer the Core Charge, or Accept the Core Charge.

Description
We demand a lot of performance out of our trucks these days. Hotter temperatures on highways and in cities, heavier workloads, longer haul times and stretched out maintenance schedules all contribute to the failure of components we've become used to trusting with our livelihood and lives. In a situation where the 10R140 fails in the 2018-2024 Ford Super Duty, trust that SunCoast has a cost-effective solution that was developed and upgraded to perform above and beyond the factory transmission. With upgraded filters, clutch materials and quantity, new hardware and programming, over 30 years of experience is evident in SunCoasts Category 2 offering. Newly Designed Thermal Flow Control FilterSunCoasts 10R140 Category 2 transmission filter has two types of re-designed media: fine and course (medium). The course media is common in most filters (orange filter paper), the fine media filtration (white paper) is the newer material. There is a thermal plate inside the filter that separates the course and fine media. When the transmission fluid is cold (creating higher viscosity) at startup, The fluid will flow through both the fine and course filter medias. As the fluid heats up (decreasing viscosity), the thermal plate will bend and restrict the coarse media section, directing most of the fluid through the fine media. More of the finer debris being caught once the fluid is heated gives the transmission a far superior filtration system. Keeping sediment and contaminates out of the working parts of the transmission.The Suncoast Category 2 10R140 transmission comes with a new factory filter to ensure zero flow issues. Raybestos Powertrain GPZ friction plates greatly increase transmission performance and durability. This state-of-the-art friction material far exceeds factory material to withstand high stress, high temperatures and repeated cycling. GPZ's outstanding performance benefits is perfect for heavy-duty vehicles and high-stress driving. Testing of GPZ's revolutionary friction material shows that it outperforms factory installed materials by as much as 20%. For a bonus fun fact, its performance improves as the power increases.Advantages: Withstands high horsepower Greater torque capacity Maintains piston travel Optimum performance Higher heat resistance Smooth engagements Enhanced shift feel Expanded Capacity Clutch ModulesThe 10R140 transmission, while a very capable unit, has its deficiencies just like anything else when it is asked to perform outside its original design intention. Since its debut, Suncoast has been actively involved in the research and development of upgrades of this newer platform. With SunCoasts active partnership with Raybestos powertrain, they deliver you the best product to date within the 10R140 platform. The Suncoast Category 2 10R140 transmission expanded capacity clutch modules that are included increase the longevity and performance of these 10 speed transmissions. Suncoast addressed the issue by improving the clutch friction properties with Raybestos GPZ material and increasing clutch capacity by an impressive 20%. This takes the clutch stack from a factory 5-clutch stack up to a 6-clutch stack-up. They simultaneously address heat issues with both improved friction coefficient, as well as increasing surface area. This Suncoast 10R140 transmission "High-Capacity E-Clutch" comes completely assembled and stacked up with a new (not used) OE machined drum, piston and backing plate.The "E" ClutchThe 10R140 transmission has a pair of troublemakers, the "E" clutch is certainly one of them. The other thorn in your side would be the "F" clutch. The "E" clutch in a 10R140 transmission, is engaged in 1,3,5,6,7,8, and 9th gears. The real issue becomes apparent rather quickly. This clutch is cycled on 3 times and off 2 times by the time you are in 5th gear. The clutch is on in 1st then cycled off in 2nd, cycled back on in 3rd, then back off in 4th...only to be cycled back on in 5th gear. In higher-horsepower or higher-demand towing and hauling situations, this constant cycling on and off can lead to premature failure. The "F" ClutchThis clutch is also prone to premature wear as has been observed in other Lepelletier Ravigneaux Gear sets. Oncoming clutches in higher gears seem to take the blunt of the beating. With the 0R140 transmission, the "F" clutch is no exception. The "F" clutch is engaged in R,4,5,6,7,8 and 9th gears. The quickest path to early or premature degradation to this clutch pack is wide open throttle or heavy-load-indexed 3rd to 4th shifts. This is especially prominent in applications where torque management has been deleted. Suncoast has corrected this issue by adding 25% more capacity to this clutch pack by adding another clutch to make 5 in this particular clutch pack.Main Pressure Regulator Valve KitWear in the main pressure regulator bore and on the outboard spool area of the valve is common in listed Ford 10-speed transmissions. This wear minimizes line pressure control resulting in delayed shift engagement, poor shift quality and burnt clutches. Wear at the inboard spool and bore can lead to converter application issues.By installing a drop-in Sonnax main pressure regulator valve kit, SunCoast eliminates the leakage of line pressure signal oil to exhaust with the incorporation of an extended front valve spool. This valve spool is 270% longer than the OE spool, so actuates in unworn areas of the bore. The O-ringed end plug provides a positive seal and prevents critical signal fluid from leaking to exhaust. Both Sonnax features ensure your units will have proper line pressure control through all drive ranges.Each Suncoast 10R140 transmission gets this modification to the factory 10R140 Valve Body: Extended outboard spool is 270% longer than OE and actuates in unworn areas of the bore O-Ringed end plug provides positive seal to prevent critical signal fluid from leaking to exhaust Hardcoat anodized aluminum valve combats premature wear Drop-in Zip Valve parts install quickly and easily Solenoid Stabilization RetainerHeavy linear force solenoids (LFS) in Ford 10-speed transmissions are held in place by small spring retainers that are prone to collapse. When the retainers collapse, the solenoid wobbles in the bore, causing damage to the casting at the clutch valve bore opening. These LFSs actuate by extending a small pintle about .090" to stroke the inboard clutch control valve. When the spring retainer collapses and the LFS is off-center, the pintle cannot stroke the clutch control valve appropriately, resulting in shift complaints and converter issues. Valve body damage can also occur if the LFSs remain loose, resulting in valve damage during rebuild.SunCoast uses Sonnax solenoid stabilization retainer 105740-19K to replace the factory clips providing 32% more surface area to create more support for the solenoid. Another SunCoast design upgrade is the top of the clip is rolled over to create a positive stop for the flexible side to land against, furthering the prevention of retainer collapse.Each Suncoast 10R140 transmission gets this modification to the factory 10R140 Valve Body: 32% More casting-to-solenoid surface area for better support and leverage Positive stop retainer feature to prevent collapse Drop-in Zip Valve parts install quickly and easily
We demand a lot of performance out of our trucks these days. Hotter temperatures on highways and in cities, heavier workloads, longer haul times and stretched out maintenance schedules all contribute to the failure of components we've become used to trusting with our livelihood and lives. In a situation where the 10R140 fails in the 2018-2024 Ford Super Duty, trust that SunCoast has a cost-effective solution that was developed and upgraded to perform above and beyond the factory transmission. With upgraded filters, clutch materials and quantity, new hardware and programming, over 30 years of experience is evident in SunCoasts Category 2 offering.

Newly Designed Thermal Flow Control Filter

SunCoasts 10R140 Category 2 transmission filter has two types of re-designed media: fine and course (medium). The course media is common in most filters (orange filter paper), the fine media filtration (white paper) is the newer material. There is a thermal plate inside the filter that separates the course and fine media. When the transmission fluid is cold (creating higher viscosity) at startup, The fluid will flow through both the fine and course filter medias. As the fluid heats up (decreasing viscosity), the thermal plate will bend and restrict the coarse media section, directing most of the fluid through the fine media. More of the finer debris being caught once the fluid is heated gives the transmission a far superior filtration system. Keeping sediment and contaminates out of the working parts of the transmission.

The Suncoast Category 2 10R140 transmission comes with a new factory filter to ensure zero flow issues. Raybestos Powertrain GPZ friction plates greatly increase transmission performance and durability. This state-of-the-art friction material far exceeds factory material to withstand high stress, high temperatures and repeated cycling. GPZ's outstanding performance benefits is perfect for heavy-duty vehicles and high-stress driving. Testing of GPZ's revolutionary friction material shows that it outperforms factory installed materials by as much as 20%. For a bonus fun fact, its performance improves as the power increases.

Advantages:
  • Withstands high horsepower
  • Greater torque capacity
  • Maintains piston travel
  • Optimum performance
  • Higher heat resistance
  • Smooth engagements
  • Enhanced shift feel
Expanded Capacity Clutch Modules

The 10R140 transmission, while a very capable unit, has its deficiencies just like anything else when it is asked to perform outside its original design intention. Since its debut, Suncoast has been actively involved in the research and development of upgrades of this newer platform. With SunCoasts active partnership with Raybestos powertrain, they deliver you the best product to date within the 10R140 platform. The Suncoast Category 2 10R140 transmission expanded capacity clutch modules that are included increase the longevity and performance of these 10 speed transmissions.

Suncoast addressed the issue by improving the clutch friction properties with Raybestos GPZ material and increasing clutch capacity by an impressive 20%. This takes the clutch stack from a factory 5-clutch stack up to a 6-clutch stack-up. They simultaneously address heat issues with both improved friction coefficient, as well as increasing surface area. This Suncoast 10R140 transmission "High-Capacity E-Clutch" comes completely assembled and stacked up with a new (not used) OE machined drum, piston and backing plate.

The "E" Clutch

The 10R140 transmission has a pair of troublemakers, the "E" clutch is certainly one of them. The other thorn in your side would be the "F" clutch. The "E" clutch in a 10R140 transmission, is engaged in 1,3,5,6,7,8, and 9th gears. The real issue becomes apparent rather quickly. This clutch is cycled on 3 times and off 2 times by the time you are in 5th gear. The clutch is on in 1st then cycled off in 2nd, cycled back on in 3rd, then back off in 4th...only to be cycled back on in 5th gear. In higher-horsepower or higher-demand towing and hauling situations, this constant cycling on and off can lead to premature failure.

The "F" Clutch

This clutch is also prone to premature wear as has been observed in other Lepelletier Ravigneaux Gear sets. Oncoming clutches in higher gears seem to take the blunt of the beating. With the 0R140 transmission, the "F" clutch is no exception. The "F" clutch is engaged in R,4,5,6,7,8 and 9th gears. The quickest path to early or premature degradation to this clutch pack is wide open throttle or heavy-load-indexed 3rd to 4th shifts. This is especially prominent in applications where torque management has been deleted. Suncoast has corrected this issue by adding 25% more capacity to this clutch pack by adding another clutch to make 5 in this particular clutch pack.

Main Pressure Regulator Valve Kit

Wear in the main pressure regulator bore and on the outboard spool area of the valve is common in listed Ford 10-speed transmissions. This wear minimizes line pressure control resulting in delayed shift engagement, poor shift quality and burnt clutches. Wear at the inboard spool and bore can lead to converter application issues.

By installing a drop-in Sonnax main pressure regulator valve kit, SunCoast eliminates the leakage of line pressure signal oil to exhaust with the incorporation of an extended front valve spool. This valve spool is 270% longer than the OE spool, so actuates in unworn areas of the bore. The O-ringed end plug provides a positive seal and prevents critical signal fluid from leaking to exhaust. Both Sonnax features ensure your units will have proper line pressure control through all drive ranges.

Each Suncoast 10R140 transmission gets this modification to the factory 10R140 Valve Body:
  • Extended outboard spool is 270% longer than OE and actuates in unworn areas of the bore
  • O-Ringed end plug provides positive seal to prevent critical signal fluid from leaking to exhaust
  • Hardcoat anodized aluminum valve combats premature wear
  • Drop-in Zip Valve parts install quickly and easily

Solenoid Stabilization Retainer

Heavy linear force solenoids (LFS) in Ford 10-speed transmissions are held in place by small spring retainers that are prone to collapse. When the retainers collapse, the solenoid wobbles in the bore, causing damage to the casting at the clutch valve bore opening. These LFSs actuate by extending a small pintle about .090" to stroke the inboard clutch control valve. When the spring retainer collapses and the LFS is off-center, the pintle cannot stroke the clutch control valve appropriately, resulting in shift complaints and converter issues. Valve body damage can also occur if the LFSs remain loose, resulting in valve damage during rebuild.

SunCoast uses Sonnax solenoid stabilization retainer 105740-19K to replace the factory clips providing 32% more surface area to create more support for the solenoid. Another SunCoast design upgrade is the top of the clip is rolled over to create a positive stop for the flexible side to land against, furthering the prevention of retainer collapse.

Each Suncoast 10R140 transmission gets this modification to the factory 10R140 Valve Body:
  • 32% More casting-to-solenoid surface area for better support and leverage
  • Positive stop retainer feature to prevent collapse
  • Drop-in Zip Valve parts install quickly and easily
No shipping to CA
About SunCoast Performance

Established in 1989 as a small-scale enterprise in picturesque Fort Walton Beach, FL, SunCoast Performance embarked on its journey with a mission to meet the rising demand for top-tier aftermarket torque converters, transmission assemblies, and components. Over the years, SunCoast has diligently identified, tested, and rectified numerous weak points within OEM transmissions and torque converters. Leveraging extensive real-world test data and cutting-edge design technology, SunCoast has emerged as a leader in quality craftsmanship, consistently surpassing competitors and exceeding customer expectations.

At the core of SunCoast's ethos lies an unwavering commitment to American-made excellence in design, manufacturing, technical support, and customer satisfaction. The company hosts bi-annual research laboratories, fostering knowledge exchange among customers and suppliers, and staying abreast of technological advancements shaping the automotive industry.

Today, SunCoast stands at the pinnacle of automotive performance, boasting a workforce of over 45 employees and occupying more than 75,000 square feet of climate-controlled facilities. In addition to manufacturing, SunCoast leases 20,000 square feet to their in-house metal supplier, National Aluminum & Alloy, ensuring complete control over the production process with access to a vast inventory of raw materials worth upwards of $2,000,000.

Video
Deferred Core Program Explanation

Ben explains the benefits of our deferred core program and how to return your core when necessary. Not sure what that is or need to send your core back? Give this video a watch for information and answers to many FAQ's.

If you’d like more information on our core return policy or need to start the core return process just give us a call at 1-888-993-4373.