TH400 TH350 Mid Plate Pilot Out Law 28-3,200 RPM GM Racing Torque Converter Part Number 46723

GM Chevy TH400/TH350 PowerGlide - 30 Spline Mid Plate Torque Converter (P/N 46723)

Dominate the drag strip with this professional-grade, lightweight racing torque converter. Precision CNC machined and built for extreme duty applications, this unit is designed to handle high-performance choppers, turbo setups, and nitrous blasts while ensuring reliable power transfer. Ideal for pairing with a TH350 or TH400 PowerGlide transmission, this converter delivers aggressive engagement and sustained performance.

Key Features & Specifications

• Application: GM Chevy TH400/TH350 PowerGlide Transmission
• Part Number: 46723
• Series: Out Law Racing Series (SUPER LIGHTWEIGHT)
• Stall Range: 2,800 - 3,200 RPM
• Core Diameter: 9.6 inches
• Bolt Circle Diameter: 11.50 inches
• Turbine Hub: 30 Spline Turbine Hub (Fits PowerGlide with Turbo Shaft)
• Impeller Hub: Hardened Chrome Moley Impeller Hub (Precision CNC Machined)
• Pump Pilot: 1.703 inch Crank Pilot (Precision CNC Machined)
• Bolt Size: 3/8 X 16 TPI (Grade 8 hardware required)
• Build Quality: Torrington Style Incased Bearings, Anti-Balloon Plates Installed

Construction Quality

• Whole back cover is quenched and hardened for maximum durability.
• All pump and turbine fins are professionally welded or furnace-brazed.
• Each unit undergoes quality inspections at every stage and is leak & pressure tested.
• Digitally balanced for smooth, high-speed operation.

Installation Guidance

• Use Type F transmission fluid for optimal performance.
• Always utilize a transmission cooler for sustained high-power applications.
• Apply Blue Loctite during assembly to ensure maximum reliability.

Important Notes

• All advertised stall speeds are based on a specific vehicle's setup and may vary depending on your application. Please contact us for personalized advice regarding your build.
• We specialize in building high-performance and racing converters since 1970. Build yours or inquire about our "No Prep Racing Converters."