4L80E 4L85E LS Night Stalker Series Stock Replacement No Stall Added Lock Up GM Torque Converter Part Number 49490

GM Chevy LS Torque Converter - NIGHT STALKER SERIES (4L80E/4L85E)

Enhance your drivetrain with our high-performance Night Stalker Series Torque Converter, engineered specifically for GM Chevy LS engines. This unit is matched to factory specifications while incorporating heavy-duty components for reliability and durability in demanding applications. Restore factory performance or upgrade with confidence knowing your conversion is built with quality materials and rigorous testing.

Key Product Specifications

• Transmission Compatibility: 4L80E / 4L85E
• Engine Application: GM LS Series Engines
• Series: Night Stalker Series
• Part Number: 49490
• Stall Range: Stock Stall (No added stall)
• Input Shaft: 35 Spline, bores matched for factory 2-step shaft
• Core Size: Factory 13 inch casing
• Bolt Circle Diameter: Factory 11.675 inches
• Impeller Hub: Hardened Chrome Molly, 2.5 inch Impeller Hub
• Torque Converter Style: Modified Extreme Duty Stator, Torrington Style Incased Bearings
• Construction Details: Oversized Extreme Duty Single Disk Lock Up, встречается 4 Corner tac Welded Fins or Furnace Brazed
• Drain Plug/Pilot Diameter: 1.703 inch Crank Pilot
• Bolt Size: 10mm X 1.5 Pitch (Class 10.9 or stronger)
• Anti-Balloon Plates: No

Quality Assurance

Each unit undergoes strict quality controls to ensure maximum performance and longevity, including:

• Leak & Pressure Tested
• Digitally Balanced
• Extreme Temperature Heavy Duty O-ring sealing

Installation and Application Guidance

Achieve optimal performance and protect your installation with these guidelines:

• Use Type F Transmission Fluid for best operational results.
• Always utilize a transmission cooler to manage heat buildup during operation.
• Apply Blue Loctite when securing components for maximum vibration resistance.

Important Considerations

• Advertised stall performance is highly dependent on the specific vehicle's overall setup and conditions.
• Higher gear ratios may be required, especially when fitted with taller tires.

Performance Upgrades:

• If you have upgraded intake, headers, exhaust, or cam, we recommend considering our "Street Bandit Series" torque converter for a perfect match.
• For applications involving power adders such as Nitrous Oxide (NOS), Turbochargers, or Superchargers, the "Out Law Series" is advised.

Building High Performance & Racing Converters Since 1970! Veteran & Family owned and Run company.

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