Blessed Performance has the SunCoast Guardian 4R100 Transmission w/ Torque Converter for 1998-2003 Ford Super Duty trucks.
- Alto High Performance Clutch Kit
- Alto High Performance Steel Module
- Overhaul Kit
- New Filter
- New Bushing Kit
- New Front Pump Bushing
- Transgo Tugger Kit
- New Solenoid Pack
- New Heavy Duty 45 Element Sprag
- SunCoast Guardian Torque Converter
The 4R Platform
The 4R100 transmission replaced the E40D transmission for the 1999 year model and was mated to the 7.3L Power Stroke diesel through the 2003 model year Ford trucks. The 4R100 proved to be a fairly reliable transmission in stock performance levels, however once power adders are introduced the transmission, becomes the weak link in the drivetrain.
This electronically controlled overdriven unit boast a first gear ratio of 2.71:1 and a second of 1.54:1, which makes it great for towing and hauling with an .71, overdrive fuel economy is also improved.
The Clutches Involved
This new 4R100 transmission includes Alto Red Eagle clutches along with Kolene steels.
Red Eagle Friction is the go-to material for most performance applications. The lining has a unique dual-saturation, which imparts high friction coefficients and high heat resistance. Red Eagle clutches are designed to limit the amount of "slip" by providing a shorter lock-up time, generating less heat.
The proprietary process starts with the friction paper saturated in a phenolic resin, cured, and then saturated a second time in a silicate. The silicate imparts high heat resistance.
Red Eagle clutches:
- Are designed with a softer, more resilient base paper.
- Assure less wear against opposing steel plates.
- Reduce the incidence of steel plates burning and warping.
The Intermediate Sprag
The factory sprag in the 4R100 transmission unit is notorious for failing when exposed to high levels of fatigue. This could include vehicles exposed to heavy towing or hauling or just higher-than-normal torsional fatigue. These factory sprags are typically 24- or 34-element sprags. In all SunCoast builds, these are replaced with heavy duty 45 element sprags. This is an increase of up to 53% over the factory, offering unmatched performance and ensuring that premature failure does not occur.