TH350 TH400 Dirt Track 20-2,200 RPM GM Racing Torque Converter Part Number 47112

TH350/TH400 PowerGlide Dirt Track Racing Torque Converter - 30 Spline (Part #47112)

Elevate your hot rod or race machine with our high-performance Dirt Track Racing Series Torque Converter. Precision engineered for demanding applications, this lightweight converter is built to handle the extreme stresses of drag racing and chopped cam setups, providing optimal power transfer when you need it most.

This robust unit features a 30-spline turbine hub and is designed for those seeking maximum reliability and performance under aggressive driving conditions. It fits both TH350 and TH400 applications when fitted with the appropriate flex plate.

Key Specifications

• Transmission Compatibility: TH350 / TH400 PowerGlide
• Series Designation: Dirt Track Racing Series
• Part Number: 47112
• Stall Range: 2,000 – 2,400 RPM
• Turbine Hub: 30 Spline Precision Machined
• Impeller Hub: Hardened Chrome Moley, Precision CNC Machined
• Core Diameter: 12 inch
• Bolt Circle Diameter: 10.750 inches
• Crank Pilot Size: 1.703 inch
• Bolt Size: 3/8 X 16 TPI (Grade 8 Hardware Required)
• Construction Detail: Pump & Turbine Fins are Welded or Furnace-Brazed for Maximum Strength
• Bearings: Torrington Style Incased Bearings

Performance & Build Details

Engineered for endurance, this torque converter undergoes rigorous quality control throughout every manufacturing stage. It is leak and pressure tested, digitally balanced, and includes Modified Extreme Duty Stator plates, ensuring smooth operation even with chopped camshafts or in lightweight vehicles.

• Designed for Choppy Cams and Lightweight Drag Applications
• High-Quality Manufacturing: Made in the USA

Installation & Application Guidance

• Use Type F transmission fluid for best operating performance.
• Always install a transmission cooler to maintain optimal temperature and longevity.
• Apply Blue Loctite to critical hardware components.

Important Notes

• Advertised stall ranges are dependent on a specific vehicle setup and may vary based on your application. Please contact us for expert fitting advice.

Building high performance and racing converters since 1970! Veteran owned and family run. Contact us today to discuss your specific high-performance build needs.