5R110W 2008 Ford F-Series Super Duty 6.4L RWD – Remanufactured 5-Speed Automatic Trans

Description

Engineered for highway transport fleets, this Ford F-350 Super Duty 2008 Remanufactured Transmission channels 6.4L twin-turbo diesel power straight to the rear axle. The 5-Speed RWD platform supports 350 horsepower and 650 lb-ft of torque beneath a 3,800 RPM ceiling. Working hydraulic line pressure peaks at 250 PSI to prevent friction clutch pack slippage across heavy equipment transport runs.

An A380 die-cast aluminum casing encases case-hardened 8620 steel planetary gears and ground helical gear sets. Sintered bronze friction discs work with laser-flattened steel reaction plates to avoid slippage. The rebuilt hydraulic valve body incorporates hard-anodized aluminum bore sleeves, reducing pressure drop-off during warm fluid conditions. Transmission dry weight registers at 262 lbs, featuring an 18.0-quart oil capacity and standard 1/2-inch inverted flare cooler connections.

Key Features of Ford F-350

Heavy transport operators buy Ford F-350 Super Duty 2008 remanufactured transmission units to cure torque converter clutch shudder and gear slipping in 1-ton diesel work trucks. Each rebuilt unit contains upgraded heavy-duty clutch packs engineered to cope with severe commercial towing demands.

• 31-spline input shaft delivers positive engagement into the furnace-brazed torque converter turbine.
• F-350 2008 replacement valve body corrects slow pressure build in forward clutch circuits.
• 5-Speed gear set provides strong off-the-line torque multiplication alongside peaceful highway travel.
• Micro-finished steel clutch drums eliminate high-rpm band drag during ratio transitions.
• 2008 F-350 gear train module uses hardened planet pins to withstand high torque spikes.
• Heavy-duty spring packs deliver rapid clutch release to eliminate friction drag between gears.
• High-flow hydraulic fluid galleries speed up line pressure rise times upon shift demand.

High Output Diesel Fluid Pressure

Operational hydraulic line pressures modulate between 195 and 250 PSI according to throttle position sensors. Fluid pan temperatures stay locked between 165°F and 192°F under loaded vehicle operation. The mechanical gear spread transitions from a 3.11:1 1st gear to a 0.71:1 5th gear overdrive, cutting engine RPM during high-speed travel. Continuous fluid circulation through external oil cooling passages prevents clutch glazing and varnishing.

Two Wheel Output Spline Alignment

A ground 34-spline rear output shaft joins the driveline slip yoke with strict precision. Output shaft radial runout measures under 0.0016 inches on precision dial indicators to protect rear tail housing bearings. Transmission mount bracket threaded holes sit 29.8 inches from the engine block face. The output centering pilot ensures centered shaft positioning and eliminates high-speed driveline vibration.

Automated Heavy Torque Screening

Our dynamometer testing protocol runs each unit through cold and hot cycle profiles to verify shift solenoid resistance and clutch clamp force. This transmission is not engineered for truck pull competitions, uncalibrated high-boost diesel tuning, or installations with contaminated oil cooler cores.

• Check transmission pan fluid clarity through dipstick tube every 30 operating days.
• Install fresh external spin-on filter and synthetic fluid every 30,000 miles.
• Inspect driveshaft center support bearing mount every 12 months.

Commercial Diesel Warranty Manifest

Every commercial transmission comes backed by a 3-Year unlimited mileage warranty. The heavy wooden transport container holds the remanufactured automatic transmission, balanced torque converter, replacement cooler union adaptors, and technical transmission fluid fill sheets.