The Boss Hog 49454 is a Street Bandit series lock-up torque converter for the GM 4L60E, 4L65E, and 4L70E (300mm) automatic transmissions behind LS engines, on the 30-spline two-step input shaft used from 1998 up. It runs a 3,200 to 3,500 RPM stall and is a super lightweight lock-up converter, in some cases more than 22 lb lighter than stock, which suits choppy cams and lighter vehicles. It strengthens the factory weak points with a thicker, stronger lock-up liner, a modified heavy-duty stator, an extreme-temp heavy-duty O-ring, and new Torrington-style encased bearings. It uses a 9.6 in core, an 11.063 in bolt circle, and a 1.703 in crank pilot. Make sure your gear ratio and tire height support the higher stall. Every unit is leak and pressure tested, digitally balanced, and made in the USA.
- Series: Street Bandit
- Transmission: GM 4L60E, 4L65E, 4L70E (300mm, LS, lock-up)
- Application: LS engines, 1998-up 2-step input shaft
- Stall Speed: 3,200-3,500 RPM
- Core: 9.6 in (super lightweight)
- Bolt Circle: 11.063 in
- Input Spline: 30
- Lock-Up: Yes (extreme-duty); extreme-temp heavy-duty O-ring
- Impeller Hub: Hardened chrome moly
- Bearings: Torrington-style encased
- Crank Pilot: 1.703 in
- Bolt Size: 3/8 x 16 TPI (Grade 8)
- Anti-Balloon Plates: No
- Balance: Digitally balanced
- Build: Leak & pressure tested; made in USA
- Part Number: 49454
WARNING: This product can expose you to chemicals including lead and lead compounds, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
FAQ
What transmission does the Boss Hog 49454 fit?
It fits the GM 4L60E, 4L65E, and 4L70E (300mm) lock-up transmissions behind LS engines, on the 30-spline two-step input shaft used from 1998 up.
What is the stall speed?
The 49454 has a 3,200 to 3,500 RPM stall. Make sure your gear ratio and tire height support the higher stall. Advertised stall varies with your vehicle setup.
Is this a lock-up converter?
Yes. It uses an extreme-duty lock-up with a thicker, stronger liner than the factory converter.
What are the key fitment specs?
It is a 30-spline input with an 11.063 in bolt circle, a 9.6 in lightweight core, and a 1.703 in crank pilot.
Which Boss Hog series should I choose?
Boss Hog groups these converters by build level. Night Stalker suits stock to mild combinations, Street Bandit is the step up once you have upgraded two or more items such as intake, heads, headers, exhaust, cam, or gearing, and the Out Law racing series is for power adders like nitrous, a supercharger, a turbocharger, or a trans brake.