SunCoast 3200 Stall 1072 Converter, 2001-2016 LB7/LLY/LBZ/LMM/LML

Part# GM-1072-3D

$1,815.00 +$350.00 core charge (refundable)

WARNING: Cancer and Reproductive Harm - www.P65Warnings.Ca.Gov

Fits: 2001 thru 2016 Chevy Silverado/GMC Sierra 2500HD/3500HD LB7/LLY/LBZ/LMM/LML Duramax Diesel

The 70 Series of torque converters are some of the most prolific converters ever manufactured for the Allison transmission. These SunCoast converters drive and feel almost stock at part throttle, but once you start leaning on the throttle heavily, watch out! The 1072 is the most aggressive street/strip converter manufactured for the late-model Allisons, but can also be used on early models. This converter would be ideal for someone who is racing often as it couples violently once it flashes and offers the highest torque multiplication of the 70's series line. This converter is extremely streetable and could be used in a daily driven street killer that sees track time on the weekend. 


  • Higher than factory stall, approx. 3200RPM
  • Billet triple disc, billet stator
  • Perfect strip/race converter while still street-able
  • Works best with large single turbos or compound turbo setups


  • Towing is not recommended with this converter
  • Billet transmission internals recommended over 500+HP