Product Description

Twisted Punisher™ Ford C6 – Big Block

650–850 HP Extreme Performance Transmission

The Twisted Punisher™ C6 is our extreme-duty big block Ford transmission engineered for 650–850 horsepower street and street/strip applications.

Built in-house and calibrated the Twisted Torque™ way, this transmission is designed for high horsepower big block engines, aggressive camshaft setups, stroker builds, and vehicles producing substantial torque.

This build incorporates additional internal upgrades that significantly increase clutch holding capacity, band apply force, and hydraulic control, making it suitable for demanding high-power applications.

This is not a standard rebuild — this is a serious performance transmission designed to handle extreme torque loads.

🔥 Power Rating

Rated for:

✔ 650–850 Horsepower

✔ High horsepower street builds

✔ Stroker big block engines

✔ Street / strip vehicles

✔ Heavy torque applications

⚙️ Internal Build Specifications

Every Twisted Punisher™ C6 Includes:

• Twisted Torque™ HD Performance Clutches

• Kolene steels

• Wide High-Performance Intermediate Band

• Billet Heavy-Duty Servo Assembly

• 34-Element Heavy-Duty Sprag Assembly

• Upgraded High-Capacity Clutch Pack Configuration

• Increased Line Pressure Performance Calibration

• Complete new bushing kit

• Upgraded Thrust Washer / Bearing System

• New vacuum modulator

• Remanufactured pump assembly

• Pump Modified & Updated the Twisted Torque™ Way

• Valve Body Modified & Updated the Twisted Torque™ Way

• New filter

• New seals and sealing rings

These upgrades dramatically increase clutch capacity, hydraulic holding force, and durability under extreme torque conditions.

⚙️ Included Torque Converter

✔ Includes Matched Performance Torque Converter

Typical stall range:

• 2300-2500 RPM

(final stall confirmed prior to shipment)

Higher stall performance converter upgrades are available for more aggressive engine combinations.

🧊 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 24,000–30,000 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