{"product_id":"4l80e-4l85e-ls-night-stalker-200-rpm-over-stock-lock-up-gm-towing-torque-converter-part-number-4948hd","title":"4L80E 4L85E LS Night Stalker 200 RPM Over Stock Lock Up GM Towing Torque Converter Part Number 4948HD","description":"\u003cp\u003e\u003c\/p\u003e\u003ch2\u003eNight Stalker Series Torque Converter - GM Chevy LS 4L80E\/4L85E\u003c\/h2\u003e \u003cp\u003eAchieve maximum performance and reliability with our Night Stalker Series torque converter, engineered specifically for GM Chevy LS applications. This heavy-duty unit is designed to handle high loads while maintaining a precise stall range, making it the perfect match for your upgraded drivetrain. Built in-house and rigorously tested, this converter ensures seamless power transfer from engine to transmission.\u003c\/p\u003e \u003cp\u003eOur commitment to quality is reflected in every component, from the hardened chrome impeller hub to the digitally balanced assembly. Don't settle for less—install a proven, high-performance torque converter built to withstand extreme conditions and deliver peak power delivery when you need it most.\u003c\/p\u003e \u003ch3\u003eProduct Specifications\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eSeries: Night Stalker Series\u003c\/li\u003e \u003cli\u003eApplication: GM Chevy LS Engines (For 2 step input shaft)\u003c\/li\u003e \u003cli\u003ePart Number: 4948HD (See images for visual confirmation)\u003c\/li\u003e \u003cli\u003eStall Range: 200 - 300 RPM (Over stock)\u003c\/li\u003e \u003cli\u003eImpeller Hub: Hardened Chrome Molly, 2 inch Diameter (See pictures)\u003c\/li\u003e \u003cli\u003eCore Size: Factory 13 inches\u003c\/li\u003e \u003cli\u003eBolt Circle Diameter: Factory 11.675 inches\u003c\/li\u003e \u003cli\u003eInput Shaft: 35 Spline Input Shaft for 2-step compatibility\u003c\/li\u003e \u003cli\u003eStator: Modified Extreme Duty Stator\u003c\/li\u003e \u003cli\u003eBearings: Torrington Style Incased Bearings\u003c\/li\u003e \u003cli\u003eLockup Clutch: Oversized Extreme Duty Single Disk Lock Up\u003c\/li\u003e \u003cli\u003eCrank Pilot Diameter: 1.703 inch\u003c\/li\u003e \u003cli\u003eBolt Size: 10mm X 1.5 Pitch (Class 10.9 or Stronger)\u003c\/li\u003e \u003cli\u003eConstruction: Anti-Balloon Plates, Digitally Balanced, 4 Corner Tac Welded\/Furnace Brazed Fins\u003c\/li\u003e \u003cli\u003eTesting: Leak \u0026amp; Pressure Tested, Extreme Temp Heavy Duty O-ring Seal\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eInstallation and Performance Guidance\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eUse Type F Transmission Fluid for optimal operational performance.\u003c\/li\u003e \u003cli\u003eAlways utilize a transmission cooler to maintain fluid integrity under extreme use.\u003c\/li\u003e \u003cli\u003eApply Blue Loctite during installation for maximum security.\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eImportant Considerations\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eAdvertised stall ranges are based on a specific vehicle setup; actual performance will vary depending on your vehicle's configuration.\u003c\/li\u003e \u003cli\u003eVehicles with taller tires or significant gear ratio changes may require additional gearing adjustment for ideal match.\u003c\/li\u003e \u003cli\u003eFor maximum performance potential, consider upgrading to a \"Street Bandit Series\" if you have also upgraded your intake, headers, exhaust, or gearing.\u003c\/li\u003e \u003cli\u003eIf utilizing power adders such as Nitrous Oxide (NOS), Turbocharger(s), or Supercharger, we recommend pairing this with an \"Out Law Series\" torque converter.\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003eOur company has been building high-performance and racing converters since 1970. We are a veteran and family-owned operation dedicated to quality assurance at every stage.\u003c\/p\u003e \u003cp class=\"legal-notice\"\u003eWARNING: Cancer and Reproductive Harm - www.P65warning.ca.gov\u003c\/p\u003e","brand":"Boss Hogg","offers":[{"title":"Default Title","offer_id":52064197476598,"sku":"4948HD","price":402.58,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0810\/7261\/9766\/files\/49481b-scaled-1_227aa63f-2583-4e3b-b284-d92dbf2a69cf.png?v=1793210143","url":"https:\/\/bosshogtorqueconverters.com\/products\/4l80e-4l85e-ls-night-stalker-200-rpm-over-stock-lock-up-gm-towing-torque-converter-part-number-4948hd","provider":"Boss Hog Torque Converters","version":"1.0","type":"link"}