4L80E 4L85E LS Night Stalker Series 16-2,200 RPM Lock Up GM Torque Converter Part Number 49481

Night Stalker Series Torque Converter - GM LS 4L80E / 4L85E

Engineered for demanding LS applications, this Night Stalker Series torque converter is designed to provide reliable, powerful engagement and durability under extreme conditions. Built with high-quality materials and meticulously tested, this torque converter is the perfect match for enthusiasts seeking optimal performance from their GM Chevy LS setup.

This unit is manufactured with superior components, ensuring a robust match to your drivetrain and providing the necessary durability for performance builds.

Product Specifications

• Transmission Application: GM Chevy LS 4L80E / 4L85E
• Series: Night Stalker Series
• Part Number: 49481
• Stall Range: 1,600 - 2,200 RPM
• Impeller Hub: Hardened Chrome Molly, 2 inch diameter
• Input Shaft: 35 Spline (for 2 step input shaft)
• Core Size: Factory 13 inch
• Bolt Circle Diameter (BCD): Factory 11.675 inch
• Key Features: Modified Extreme Duty Stator, Torrington Style Incased Bearings, Oversized Extreme Duty Single Disk Lock Up
• Construction: Digitally Balanced, 4 Corner Tac Welded Fins or Furnace Brazed
• Pilot Diameter: 1.703 inch Crank Pilot
• Bolt Size: 10mm X 1.5 Pitch (Class 10.9 or Stronger)
• Quality Assurance: Leak & Pressure Tested, Extreme Temp Heavy Duty O-ring

Application Details

• Ideal for: LS Engines
• Hub Compatibility: Fits with 2 inch Impeller Hub (refer to accompanying picture)
• Bolt Circle: Factory 11.675 inch Bolt Circle matches most factory setups

Installation & Performance Considerations

• Use Type F transmission fluid for optimal performance.
• Always use an additional Transmission Cooler when installing this torque converter.
• Apply Blue Loctite during installation for secure assembly.

Important Notes

• Stated stall ranges are based on a specific vehicle setup; actual performance will vary depending on your installation.
• For high-performance builds involving intake upgrades, headers, exhaust, cam, or gearing, we recommend upgrading to a "Street Bandit Series" torque converter.
• For setups including power adders (Nitrous, Turbocharger(s), Supercharger, or Trans Brake), we recommend upgrading to an "Out Law Series" torque converter.
• For detailed installation questions or advice, please contact us at 888-267-7464.

Veteran & Family owned company building high performance converters since 1970. Made in the USA.