The Boss Hog 48441 Night Stalker Series Torque Converter is built for GM 700R4 transmissions using a 298mm, 3-step input shaft (LT-based engine applications). With a stall range of 1600–2200 RPM and a factory-size 12" core, this converter is ideal for stock to mildly upgraded street builds. It offers excellent drivability while shedding unnecessary weight for improved efficiency.
Constructed using high-quality components like a hardened chromoly impeller hub and Torrington-style bearings, this lock-up converter is tested, balanced, and built to last. Made in the USA and built for consistent performance under daily driving conditions.
Upgrade Tip: Step up to the Street Bandit Series for builds with cam, exhaust, or intake upgrades. Choose the Outlaw Series for power adder setups like nitrous, turbos, or superchargers.
Key Features
-
1600–2200 RPM stall speed range
-
Lock-up compatible
-
Fits GM 700R4 (298mm, LT-type, 3-step input shaft)
-
12" factory-size core
-
30 spline input (count smaller splines)
-
1.703" crank pilot
-
10.75" bolt circle
-
Bolt size: 10mm x 1.5 pitch (Class 10)
-
Hardened chromoly impeller hub
-
Torrington-style encased bearings
-
Modified heavy-duty stator
-
Fins are 4-corner tack welded or furnace-brazed
-
No anti-balloon plate
-
Leak and pressure tested
-
Digitally balanced
-
Steel construction with black painted finish
-
Made in the USA
-
Sold individually
Vehicle Fitment
-
GM vehicles equipped with 700R4 automatic transmission
-
298mm LT-type builds with 3-step input shaft
-
Ideal for stock or mild camshaft, lightweight street applications
What's Included
-
1x Boss Hog 48441 Night Stalker Lock-Up Torque Converter
Installation Tips
-
Use Type F transmission fluid
-
Install an auxiliary transmission cooler
-
Use blue Loctite on all converter bolts