SunCoast 2000 Stall 1056 Converter, 2001-2016 LB7/LLY/LBZ/LMM/LML

Part# GM-1056-3D

$1,500.00 +$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

This SunCoast converter has been a workhorse with the Allison platform since its inception. Perfect for customers who enjoy the driving characteristics of a stock torque converter. You will not be able to tell any differences in driving with this converter versus stock other than a more precise lock up. 


  • Factory stall speed, approx. 2000RPM
  • Billet triple disc with cast stator
  • Stock-like driving characteristics, better & precise lock-up
  • Perfect for stock, daily driver applications


  • Not recommend for over 500HP or race use