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HomeShop by DepartmentPerformanceTransmissionsTransmissionSuncoast 5R110 Cat 3 600 HP Transmission 2003-2004 4WD (WITHOUT CONVERTER)

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Suncoast 5R110 Cat 3 600 HP Transmission 2003-2004 4WD (WITHOUT CONVERTER)

Thoroughbred Sku #: SUNSC-5R110CAT3-0304-4WD-LC-CRE

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PAYMENT NOTE: If you choose Pay Core Later, from the Core option below, you will not be able to pay for this order using Affirm or PayPal

$8,700.00 On Sale! $7,830.00

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Terms & Conditions for Cores

Many stock replacement parts such as turbos, injectors, injection pumps, and high pressure oil pumps have a core charge that is associated with the new replacement part. You must return the old part to receive a refund on the core charge.

In some cases, the core is not reusable, such as in the event of a cracked case, at which point the core deposit would not be credited as the core component is not reusable.
Cores that have been disassembled and/or have missing and/or damaged major components will not receive full core credit.
Returned cores must be on a "like-for-like" basis, meaning that the returned core has the exact same fitment as the remanufactured component that was purchased. If the core is not "like-for-like," your core may not be eligible for return/credit.
You are responsible for core return shipping cost.

If you plan on returning your core you have two options.

Thoroughbred Diesel offers defer the upfront core charge when purchasing via credit card payment.

OPTION 1: You can accept the core charge, which means you will be charged for the part AND the core at time of purchase. You still have the option to send it back, and if you do, the core will be refunded back on the card used, presuming the core meets core criteria and the core is returned within 30 days from the time your order is received. If you return your core after 30 days you may refer to the Core Charge Timeline below as to how you will be refunded.

Core Charge Timeline

If the core is returned after 30 days, 90% of the core will be refunded.
If the core is returned after 60 days, 70% of the core will be refunded.
If the core is returned after 90 days, 50% of the core will be refunded.
After 6 months cores will be accepted at Thoroughbred’s discretion.

OPTION 2: You can defer the core charge. If you defer, you will not be charged for the core at the time of purchase. You will have 21 days from the time your order is received to send the core back. If the core is not received within the 21 days, your credit card will be charged for the core amount on your order. If you return your core after 21 days, you may refer to the Core Charge Timeline below as to how you will be refunded. When Core deferral (Pay Core Charge Later) is limited to payment by credit card only. ***When using PayPal or Affirm as your method of payment “Core Deferral (Pay Core Charge Later)” is not available. The core must be paid at time of purchase. ***

Core Charge Timeline

If the core is returned after 21 days, 90% of the core will be refunded.
If the core is returned after 60 days, 70% of the core will be refunded.
If the core is returned after 90 days, 50% of the core will be refunded.
After 6 months cores will be accepted at Thoroughbred’s discretion.

Core Return Procedure

Please keep all original packaging of your new item to be used for the core return.
Drain all fluids: oil, fuel, etc. out of the core before it is returned.
Place any plastic plugs or caps received on the new item back onto the core.
To insure UPS, Fed Ex, or USPS will not reject the package due to fuel or oil leakage, please wrap the core in a plastic garbage bag.
Place core inside the box.
If core return paperwork was inside the box, please complete the form and send back with the core.
Please provide a tracking number to [email protected]. Without a confirmed tracking number we cannot guarantee your core refund
If you have questions please call our core department 859-737-4966 ext. 5

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Product Details

Product Name: Suncoast 5R110 CAT 3 600 HP TRANSMISSION 2003-2004 4WD (WITHOUT CONVERTER)
Manufacturer: Suncoast
Manufacturer Part #: SC-5R110CAT3-0304-4WD-LC
Thoroughbred Diesel Part #: SUNSC-5R110CAT3-0304-4WD-LC
Fitment Notes: 2003-2004 Ford Powerstroke

The SunCoast Category 3 5R110 transmission takes another step forward in power handling with the addition of the billet rear overdrive planet in conjunction with the billet input shaft and billet ring gear hub. The SunCoast Category 3 5R110 upgraded transmission also gets our proprietary pump and valve body modifications ensuring clean, crisp, and accurate shifts. At this power level a billet flexplate is recommended to ensure reliability.

Tales from the 5R110

The TorqShift 5-speed 5R110 transmission replaces the old faithful 4-speed 4R100 in the 2003 model year with the introduction of the new 6.0L diesel engine. The TorqShift design, in fact, has a total of six forward gears ratios; however, only five are advertised, with the hidden gear only being used in very cold weather. The five forward ratios are: 3.11, 2.22, 1.55, 1.00, andfinallyoverdrive is 0.71. The TorqShift also utilizes an optional 4th gear at 1.10, which is used in cold start conditions to aid in engine and transmission warm up.

With the TorqShift, once the Tow/Haul mode is activated, it can help increase driver control when towing large loads up and down steep grades. It will also minimize shifts and maximize the available torque. Upon descent, the tow/haul feature utilizes engine braking to help extend the life of the transmission and improves driver control.

The TorqShift was also Fords first attempt at adaptive control. The adaptive control shift function monitors the performance over its lifetime and adjusts shift times in real time to ensure consistency and compensate for wear. The TorqShift was also used with the 6.4L. This particular transmission was later replaced with the much larger and more robust 6R140 when the 6.7L PowerStroke was released by Ford.

Walking Away from the Center Support

The center support on a transmission is a critical component that could make the difference between success or failure. The center support acts as a stabilizer, just as our lower back and abdominal muscles support us. With the TorqShift being such a long unit, over time, the torsional flexing distorts the case, and the center support can sag and become displaced. The TorqShift relies on the center support to also apply fluid feed to the direct and forward clutches. When this distortion occurs, the fluid feed holes for direct and forward can become misaligned. This is especially true when towing heavy loads or under moderate-to-hard acceleration. This will also lead to premature failure and burnt clutches.

SunCoast has developed a new No Walk Center Support to correct this issue, which we include in this kit. We also go a step further with this and make a new Mag-Hytec pan standard to increase the rigidity of the case and reduce torsional flexing.

With this now being corrected, the need for the direct solid modification is no longer needed. We originally created this modification before learning about the torsional effect.

The 'Wide Load" Direct Clutch

The direct clutch pack has been a problem child for some time now. With the center support now being corrected, we move your attention to the most problematic area of the 5R110: the direct clutch. In the 5R110, the direct clutch pack has been the topic of so many discussions. In the beginning, we modified the direct clutch solenoid as a result of the fluid flow issues we were seeing and trying to compensate for what we would later find out was the center support walking. Today, many companies still sell these altered solenoids to try to correct a direct clutch issue. We have alleviated this with our new no walk center support.

The direct clutch pack is still one of the most abused clutch packs within the transmission. The direct clutch pack is constantly subjected to conditions that can prematurely wear. To alleviate this, SunCoast has developed our new wide load direct clutch pack. These new clutches are not only made from our SunCoast SCZ carbon graphitic material, but also a larger, wider clutch.

Making the clutch wider effectively increases the mean radius of a clutch, which in turn increases the torque capacity of said clutch. What this means is the larger the mean effective radius, the more torque load capacity the friction plate can handle.

This new wider clutch is also combined with the new wider steel and new wider apply plate. This combination, along with the new and improved No Walk center support, makes this the most loudly engineered kit on the market today.

The Billet Ring Gear Hub

The Ford factory ring gear hub has many issues, even in stock form. When we start increasing load on the driveline via additional torque, larger wheels and tires, towing heavy loads or aftermarket tuning, this piece becomes very susceptible to catastrophic failure.

This unit comes with a new billet one-piece ring gear hub. This new billet hub is precision machined out of 4140 HTSR steel. This not only withstands the additional torque, but is also perfect for heavy duty towing applications.

The Input Shaft

The factory Ford input shaft is one of the smallest input shafts on the market today. Its lack of size makes for a sore subject with many of our customers after a simple programmer has proven to be too much. With factory wheels and tires, this is a standard replacement for all of our builds. With larger wheels and tire combinations, this becomes essential at stock horsepower/torque.

Tire size, gear ratio, and reciprocating mass can all play a role in the amount of torsional fatigue that can occur. Torsional fatigue is one of the largest contributors to premature failure. Fatigue is something that occurs over time after repeated stress. So torsional fatigue is something that occurs over time after repeated stress. It is not so much the overall torque but the accumulation or sum of all the torque that the object has seen over time. SunCoast uses a new billet input shaft that is heat treated and precision ground from 300 maraging steel for maximum held strength. This shaft is a 100% drop-in assembly.

Billet Planet

The overdrive planet on the 5R110W is a definite weak link in the higher horsepower applications. This is especially true when you factor in larger wheels and tires.

The billet overdrive planet housing is used in all of our competition 5R110W transmissions. This overdrive planet is precision machined out of 4140 HTSR billet steel. This eliminates both the spline failures, as well as the housing shattering under heavy loads.

Mean effective radius is the distance from the theoretical center of the friction plate to the center of the friction material. What this means is the larger the mean effective radius, the more torque load capacity the friction plate can handle.

Information such as tire size, gear ratio, and reciprocating mass can all play a role in the torsional fatigue that occurs on these shafts. Torsional fatigue is one of the largest contributors to premature failure that we see. Fatigue is something that occurs over time after repeated stress. It is not so much the overall torque but the "accumulation" or "sum" of all the torque that the object has been exposed to over time. When you examine the different materials for making these shafts, you will see they come in a variety of grades with a variety of prices. While the more expensive grades such a Maraging, Vascomax, or even the much coveted Aeromet, have a stronger yield rate, they are much more resistant to fatigue.

Suncoast Transmission Features:

SunCoast Low/Reverse Clutch Pack with 6 Clutches & 6 Kolene Steels
SunCoast Overdrive Clutch Pack with 5 Clutches & 4 Kolene Steels
SunCoast Overdrive Piston
SunCoast Overdrive Pressure Plate
SunCoast Intermediate Clutch Pack with 5 Clutches & 5 Kolene Steels
SunCoast Intermediate Pressure Plate
SunCoast Forward Clutch Pack with 5 Frictions & 5 Steels
SunCoast Forward Pressure Plate
SunCoast Wide Load Direct Clutch Pack with 5 Frictions & 5 Steels
SunCoast Direct Pressure Plate
SunCoast Direct Piston
SunCoast Direct Snap Ring
SunCoast No Walk Center Support
SunCoast Overhaul Kit
SunCoast Valve Body Calibration Kit
Billet Vascomax Input Shaft
Billet Rear Ring Gear Hub
Mag-Hytec Deep Pan
Billet Overdrive Planet
For more information on Suncoast call us at 1-859-737-4966.

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