Twisted Pro™ Ford C6 – Big Block

550–650 HP Performance Transmission

The Twisted Pro™ C6 is our upgraded big block Ford transmission engineered for 550–650 horsepower street and performance applications.

Built in-house and calibrated the Twisted Torque™ way, this transmission is designed for higher horsepower street builds, stroker big blocks, and aggressive camshaft engines that require stronger internal holding capacity than standard street builds.

This is not a generic rebuild — this is a performance-calibrated transmission designed for serious torque and high-power street use.

🔥 Power Rating

Rated for:

✔ 550–650 Horsepower

✔ High performance street builds

✔ Stroker big block engines

✔ Aggressive camshaft setups

✔ Street / strip capable vehicles

⚙️ Internal Build Specifications

Every Twisted Pro™ C6 Includes:

• Twisted Torque™ HD Performance Clutches

• Kolene steels

• Wide High-Performance Intermediate Band

• Upgraded Heavy-Duty Servo Assembly

• Upgraded One-Way Sprag Assembly

• Complete new bushing kit

• Complete new thrust washer kit

• New vacuum modulator

• Remanufactured pump assembly

• Increased Line Pressure Calibration

• Pump Modified & Updated the Twisted Torque™ Way

• Valve Body Modified & Updated the Twisted Torque™ Way

• New filter

• New seals and sealing rings

These upgrades increase clutch holding capacity, band apply force, and hydraulic pressure, allowing the transmission to handle substantially more torque than factory units.

⚙️ Included Torque Converter

✔ Includes Matched Performance Torque Converter

Typical stall range:

• 1800–2200 RPM

(final stall confirmed prior to shipment)

This stall range works well for larger camshaft engines and higher torque big block builds.

🧊 Cooling & Installation Requirements

Because the C6 is a non-overdrive, non-lockup transmission, proper cooling is mandatory.

• External stacked-plate cooler REQUIRED

• Radiator cooler alone is not sufficient

• Minimum 24,000 GVW rating recommended

• Cooler and lines must be flushed or replaced

Overheating is the #1 cause of transmission failure.

🔩 Fitment

Fits Ford Big Block engines:

• 390 FE

• 406 FE

• 427 FE

• 428 FE / Cobra Jet

• 429

• 460