The Boss Hog 47402 Night Stalker Series Torque Converter is purpose-built for GM TH350C transmissions only. Featuring a stall speed range of 2200–2800 RPM and a 12" factory-style core, this lock-up converter is ideal for mild performance upgrades and reliable street driving.
Engineered for durability, it includes a CNC-machined 30 spline turbine hub, hardened chromoly impeller hub, Torrington-style bearings, and a heavy-duty stator. Each unit is leak-tested, digitally balanced, and made in the USA.
Fitment Note: This converter will not fit standard TH350 or TH400 transmissions. It is exclusively for TH350C applications.
Key Features
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2200–2800 RPM stall speed range
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Lock-up compatible
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Designed exclusively for GM TH350C transmissions
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12" factory-style core
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10.75" bolt circle
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30 spline turbine hub (CNC machined)
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1.703" crank pilot
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Bolt size: 10mm x 1.5 pitch threads
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Hardened chromoly impeller hub
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Torrington-style incased bearings
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Modified heavy-duty stator
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Extreme-duty lock-up
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No anti-balloon plate
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Fins are 4-corner tack welded or furnace-brazed
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Leak and pressure tested
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Digitally balanced
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Steel construction, black painted finish
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Made in the USA
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Sold individually
Vehicle Fitment
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GM vehicles equipped with the TH350C automatic transmission
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Will not fit TH350 or TH400 transmissions
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Ideal for street use and lightly modified builds
What’s Included
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1x Boss Hog 47402 Night Stalker Lock-Up Torque Converter
Installation Tips
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Use Type F transmission fluid
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Apply blue Loctite to all converter bolts