💥 Twisted Pro HD™ Ford C4 4x4 Transmission

Up to 650 HP • Heavy-Duty 4x4 Performance

Off-Road • Trail • Utility • Heavy Vehicles • Custom Builds

The Twisted Pro HD™ Ford C4 4x4 is a heavy-duty performance automatic built for real load, real terrain, and sustained use — not race-only applications.

Designed for off-road rigs, trail vehicles, and heavy 4x4 builds that demand more strength and durability than a standard street transmission can provide.

🚫 Not a Stock Rebuild

🚫 Not a Race-Only Transmission

This build is engineered for controlled power delivery, reliability under load, and long-term durability in demanding 4x4 environments.

🔧 BUILD FEATURES

⚙️ Clutch & Friction System

• Twisted Torque™ HD Clutches & Steels
• 🔥 Increased Clutch Capacity (Additional Frictions & Steels vs Street)
• 🔥 Carbon / High-Energy Friction Materials
• Designed for sustained heat, load, and off-road use

🔩 Hard Parts & Internal Strength

• 🔥 Heat-Treated 4340 Input Shaft
• 🔥 Heavy-Duty Sprag Assembly Upgrade
• 🔥 Reinforced Output Support System
• 🔥 Rear Support Bearing Upgrade

Built to handle torque load, vehicle weight, and off-road shock.

🔧 Bands, Bushings & Sealing

• Wide Heavy-Duty Intermediate Band
• Complete Bushing & Thrust System Replacement
• New Sealing System (Seals, O-Rings, Gaskets)

Improves durability under crawling, towing, and uneven load conditions.

🔧 Pump System

• Pump Modified & Updated the Twisted Torque™ Way
• 🔥 Increased Line Pressure Calibration

Ensures consistent pressure and clutch holding under load.

🔥 SHIFT & HYDRAULICS

• Firm, controlled shift feel
• Load-focused shift timing
• Smooth engagement under throttle
• Calibrated for incline, crawling, and off-road conditions

👉 Built for control and durability — not harsh race shifts

⚙️ VALVE BODY

• Modified & Updated the Twisted Torque™ Way
• Heavy-Duty Forward-Pattern Automatic Operation
• 🔥 Performance-Calibrated for Load & Terrain
• Improved shift timing and pressure under stress
• Optional performance / manual valve body upgrades available

🛻 4x4-SPECIFIC CONFIGURATION

• Correct C4 4x4 output shaft installed
• 4WD-ready case configuration
• Designed to work with factory or aftermarket adapter setups
• Compatible with customer-supplied transfer case systems

👉 Built specifically for 4x4 applications — not a converted 2WD unit

🚗 APPLICATION

• Early Ford Bronco (1966–1977)
• Ford F-100 / F-150 4x4 (1969–1977)
• Custom off-road and trail builds
• Heavy-duty 4x4 and utility vehicles

✅ BEST FOR

• Modified engines
• Heavy vehicles and large tire setups
• Off-road and trail use
• Towing and load-focused applications
• Custom and high-demand 4x4 builds

⭐ POWER RATING

Rated up to 650 HP

Designed for high-torque, heavy-use applications when properly matched with your vehicle and supporting components.

⚠️ IMPORTANT – TRANSFER CASE NOT INCLUDED

This listing includes the transmission only.

❌ Transfer case not included

❌ Adapter housings, shifters, and related components not included

✔ Built to interface with your existing transfer case or adapter system

👉 Please confirm transfer case type and adapter setup prior to ordering