C4 24 Spline Out Law 32-3,500 RPM Ford Racing Torque Converter Part Number 25643

Ford C4 25643 Outer Law Racing Series Super Lightweight Torque Converter

Engineered for ultimate high-performance applications, this Outer Law Racing Series Torque Converter is built to handle extreme duty cycles, making it the perfect match for chopped cams and lightweight race builds. Featuring precision CNC machining and a robust 9.6-inch core, this converter delivers unparalleled performance when paired with forced induction or racing setups.

If your build demands reliability under pressure and flawless performance during launches, our premium quality construction ensures dependable operation in demanding racing environments.

Torque Converter Specifications & Construction

• Part Number: 25643
• Application Series: Outer Law Racing Series, Super Lightweight
• Stall Range: 3,200 - 3,500 RPM
• Core Diameter: 9.6 inches
• Bolt Circle: 11 7/16 inches
• Turbine Hub: 24 Spline, Precision CNC Machined
• Stator/Impeller: Modified Extreme Duty Stator with Hardened Chrome Moley Impeller Hub
• Crank Pilot: 1.375 inch Crank Pilot, Precision CNC Machined
• Hold Down Bolts: 3/8 X 16 TPI (Grade 8 recommended)
• Construction Quality: Whole Back Cover Quenched and Hardened; All pump & turbine fins are furnace-brazed or welded.
• Bearings: Torrington Style Incased Bearings for maximum durability and smooth operation.
• Safety Features: Precision CNC Machined Anti-Balloon Plates included for protection.
• Testing: Each unit undergoes rigorous quality inspections, leak testing, pressure testing, and is digitally balanced before shipping.

Application Compatibility

• Ideal for installation with a Big Bellhousing and 164 Tooth Flywheel.
• Perfectly suited for use with nitrous oxide, turbochargers, superchargers, and transmission breaks.
• Manufactured in the USA by a veteran-owned, family-run company since 1970.

Tips for Optimal Performance

• Use Old School Type F transmission fluid for the best possible results.
• Always use an additional transmission cooler to manage extreme heat generated during high-performance driving.
• Apply Blue Loctite to all drain and fill plugs for a secure, leak-proof installation.

Important Notes

• All advertised stall ranges are dependent upon the specific vehicle setup and intended application. Actual performance may vary based on your build configuration. Please contact us for detailed installation assistance or to discuss our "No Prep Racing Converters."
• For advanced questions regarding setup or installation, please call us at (888) 267-7464.

Building high performance and racing converters since 1970.