The Boss Hog 47011 Night Stalker Series Torque Converter is built for GM TH350 and TH400 automatic transmissions and offers a stall speed range of 1600–2200 RPM. It features a factory 12" core and a 10.75" bolt circle, making it an excellent choice for near-stock or lightly modified street applications.
This converter is engineered with high-quality internals, including a hardened chromoly impeller hub, Torrington-style incased bearings, and a modified heavy-duty stator. It's digitally balanced, leak-tested, and made in the USA — built for reliability with no shortcuts.
Fitment Note: Will not interchange with TH350C. Compatible with TH400 when used with the correct flexplate.
Upgrade Tip: Choose the Street Bandit Series if you've upgraded two or more components like intake, cam, or exhaust. Use the Outlaw Racing Series for nitrous, turbo, or supercharger setups.
Key Features
- 1600–2200 RPM stall speed range
- Fits GM TH350 and TH400 (with correct flexplate)
- Will not fit TH350C
- 12" factory-style converter core
- 10.75" bolt circle
- 30 spline turbine hub (CNC machined)
- 1.703" crank pilot
- Bolt size: 10mm x 1.5 pitch (Class 10 or stronger)
- Hardened chromoly impeller hub
- Torrington-style incased bearings
- Modified extreme-duty stator
- No anti-balloon plate
- Fins are four-corner tack welded or furnace-brazed
- Leak and pressure tested
- Digitally balanced
- Steel construction, black painted finish
- Made in the USA
- Sold individually
Vehicle Fitment
- GM vehicles with TH350 transmission
- Also fits TH400 with correct flexplate
- Not compatible with TH350C
- Ideal for stock or lightly upgraded street builds
What’s Included
- 1x Boss Hog 47011 Night Stalker Torque Converter
Installation Tips
- Use Type F transmission fluid
- Install an auxiliary transmission cooler
- Apply blue Loctite on all torque converter bolts