Twisted Pro™ E4OD Diesel Transmission
Fits 1990–1997 Ford F-250 / F-350 – 7.3L IDI & 7.3L Power Stroke
The Twisted Pro™ E4OD Diesel Transmission is designed for diesel trucks that demand more than a basic rebuild.
Built for tuned Powerstroke trucks, heavy towing, and work applications, this build adds durability upgrades to
handle increased diesel torque and sustained load conditions.
Each transmission is completely disassembled, inspected, and rebuilt with upgraded components that improve
clutch holding capacity, geartrain strength, and cooling performance.
This build focuses on strength, durability, and consistent performance under heavy diesel workloads.
Designed for Diesel Torque and Heavy Workloads
Ideal for:
- Tuned 7.3 Powerstroke trucks
- Heavy towing and hauling
- Fleet and commercial vehicles
- Work trucks under sustained load
- Daily-driven diesel pickups with upgrades
Diesel Performance Overhaul Package
High Energy Performance Clutch System
- High-energy friction clutch packs
- Improved holding capacity under diesel torque
- Increased resistance to heat and glazing
Carbon Fiber Intermediate Band
- Superior holding power during downshifts
- Improved durability under towing loads
- Increased resistance to heat and wear
Heavy-Duty Master Overhaul Kit
Includes:
- Premium seals and gaskets
- Bonded pistons
- Updated sealing rings
- Complete gasket set
- High-quality friction materials
- Steel clutch plates
Restores proper hydraulic sealing and clutch performance throughout the transmission.
6-Pinion Front Planetary
- Increased load distribution
- Improved durability under diesel torque
- Stronger than early factory planetary assemblies
45-Element Intermediate Sprag
- Dramatically stronger than OE units
- Helps prevent common sprag failures
- Improves reliability during hard shifts and towing
Updated Center Support
- Strengthens a known E4OD wear point
- Improves geartrain stability under load
Overdrive Spiral Snap Ring
- Improves overdrive clutch retention
- Helps prevent overdrive clutch failure
- Important upgrade for towing reliability
Stay-Put Filter Clip
- Prevents filter drop
- Maintains proper fluid pickup
Rear Case Bushing Replacement
- Restores proper output shaft support
- Improves geartrain alignment
- Enhances long-term durability
EPC Pressure Control Update
- Improves line pressure stability
- Supports consistent shift performance
- Helps prevent clutch slip under load
New Bushings and Bearings
- Worn bushings replaced
- Bearings inspected and replaced where required
Ensures proper geartrain alignment and oil flow.
New Transmission Filter
- Ensures proper fluid filtration
- Helps extend transmission life
Updated Valve Body Calibration
Performance Diesel Valve Body Calibration
- Improved line pressure stability
- Optimized shift timing for diesel torque curves
- Improved clutch apply under load
- Reduced clutch slip and heat during towing
Performance Shift Kit Installed
- Improves hydraulic control and shift consistency
- Reduces clutch slip during heavy load conditions
- Enhances durability for towing and diesel torque
Updated Pump Assembly
- Pump inspection and recalibration
- Updated pressure regulation
- Restored hydraulic stability
Proper pump pressure is critical for clutch holding power and transmission longevity.
New Internal Electronics Package
- New EPC solenoid
- New shift solenoids
- New internal wiring harness
Replacing these components eliminates common electrical failures found in aging E4OD transmissions.
Diesel Lock-Up Torque Converter Included
Calibrated specifically for diesel torque characteristics.
Recommended Stall Speed: 1650 RPM
- Towing
- Hauling
- Diesel torque delivery
Cooling Upgrade Included
Derale Extra Capacity Black Steel Transmission Pan
- Increased transmission fluid capacity
- Improved cooling performance
- Helps reduce transmission temperatures under load
- Durable black powder-coated steel construction
Power Capacity
Rated for applications up to 550 horsepower
- Tuned diesel trucks
- Heavy towing applications
- Work trucks under increased load
- Daily-driven diesel vehicles with upgrades
Warranty
- 12 Month Unlimited Mileage Warranty
- Manufacturer defect coverage
Core Charge
$500 Refundable Core Charge
Refund issued once a rebuildable transmission core is returned.
Shipping
Freight shipping available nationwide and worldwide.
Commercial dock delivery recommended. Residential delivery available with surcharge.
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