ACC Performance 49482 Night Stalker Lock-Up Torque Converter

ACC Performance 49482 Night Stalker Lock-Up Torque Converter – GM 4L80E | 2,200–2,800 RPM Stall | 35-Spline | 11.675" Bolt Circle

Upgrade your GM 4L80E (or 4L85E) with the ACC Performance 49482 Night Stalker lock-up torque converter. Built for stock to mildly modified street applications and heavy vehicles or trucks, this converter delivers a 2,200–2,800 RPM stall range for improved low-end torque and launch while maintaining efficient lock-up for highway cruising and reduced heat.

The Night Stalker series is engineered to handle up to approximately 500 horsepower. It features a thicker lock-up liner, modified stator, hardened chrome-moly impeller hub, oversized extreme-duty lock-up clutch, and Torrington-style encased bearings for greater durability than typical OEM or entry-level units. Fins are four-corner tack-welded (not just furnace-brazed) for long-term strength.

• Fits GM 4L80E / 4L85E transmissions with 2" impeller hub (2-step input shaft)
• Stall range: 2,200–2,800 RPM (application dependent)
• Lock-up design
• 35-spline input shaft
• 11.675" bolt circle
• 1.703" crank pilot
• ~12" diameter (factory core size)
• Digitally balanced and pressure/leak tested
• Hand-built in the USA (Muscle Shoals, AL)
• Ideal for mild performance street use, towing, and heavy vehicles

Notes: Actual stall speed varies with engine combination, vehicle weight, gearing, and tire size. A transmission cooler is strongly recommended. Use Type F transmission fluid for best results. For more heavily modified engines (upgraded intake, headers, cam, etc.), consider stepping up to a Street Bandit series converter.

Verify fitment for your specific application before ordering.The 49482 provides reliable performance, better torque multiplication, and improved durability for your 4L80E-powered truck or performance vehicle.

• Brand: ACC Performance
• Part Number: 49482
• Torque Converter, Night Stalker, 2200-2800 RPM Stall, 4L80E