TH350C Night Stalker 200 RPM Over Stock Lock Up GM Torque Converter Part Number 4740HD

NIGHT STALKER Series Torque Converter - GM Chevy TH350C, 298mm Lock Up (Part #4740HD)

Engineered for high-performance applications, this precision-machined torque converter is specifically designed to provide extreme duty locking action and robust operation in your heavy-duty drivetrain. The Night Stalker Series offers exceptional quality assurance, ensuring reliable performance for demanding driving conditions. Invest in unmatched durability and control for your build.

Product Specifications & Build Quality

• Part Number: 4740HD
• Series: Night Stalker Series
• Transmission Fitment: TH350C
• Stall Range (Advertised): 200 - 300 RPM (Dependent on specific vehicle setup)
• Core Size: Factory 12-inch Core
• Impeller Hub Material: Precision CNC Machined Hardened Chrome Moly
• Turbine Hub: 30 Spline
• Lock Up System: Extreme Duty, High-Speed Lock Up
• Crank Pilot Diameter: 1.703 inch
• Bolt Circle Diameter: 10.75 inches
• Bolt Size: 10mm X 1.5 Pitch Threads
• Construction Details: Torrington Style Incased Bearings, Modified Heavy Duty Stator, No Anti-Balloon Plate
• Assembly: Four Corner Tac Welded/Furnace-Brazed, Digitally Balanced
• Testing: Leak & Pressure Tested with Quality Inspections at Every Step

Installation and Maintenance Guidance

• Use Type F Transmission Fluid for optimal operational performance.
• Always install an additional transmission cooler to manage heat during use.
• Apply Blue Loctite to ensure secure and lasting installation.

Important Disclaimers & Performance Notes

• All advertised stall ranges are based on a specific vehicle setup and may vary depending on your application.
• For accurate performance guidance or installation advice, please contact our technical support team at (888) 267-7464.
• If your vehicle setup has been significantly modified (e.g., Intake, Heads, Exhaust, Cam, or Gearing), we recommend upgrading to our Street Bandit Series. For applications utilizing power adders (NOS, Turbochargers, Supercharger), the Out Law Racing Series is advised.

Building High Performance & Racing Converters Since 1970. Made in the USA.