Fits: 2001 thru 2016 Chevy Silverado/GMC Sierra 2500HD/3500HD LB7/LLY/LBZ/LMM/LML/L5P Duramax Diesel

*60-90 day lead time*

Years of professional knowledge and testing led us to these "Built to Last" Performance Short Blocks. 

The DmaxStore Stage 2 Short Block is the perfect replacement for customers running Twin Turbos or Dual CP3's along with a Built Transmission. This build is very common for customers Drag Racing or Sled Pulling their trucks on the weekends running up to the 1000HP mark. We also run this same build in our workhorse Tow Rigs. Even if the power goals are much less, this assembly can offer peace of mind for those who abuse their engines while earning a living. This short block comes fully balanced with all Brand New Internal parts (Not refurbished) by our Machine/Build Shop which has been in business for over 20 years. The engine builder is a member of the Automotive Engine Rebuilders Association and has had the privilege of sitting on the AERA National Board of Directors. These Short Blocks come Digitally Balanced from the same machine that balances Ferrari and Porsche Motors to withstand 12,000RPM's.

Includes:

• Callies DuraStar Crankshaft (Part# D333M81-CS)
  • Rated up to ​1200HP 
  • Callies Durastar crankshafts are designed to be substantially stronger than OEM shafts currently found in GM’s popular Duramax diesel.  This improvement is the result of substantially stronger steel, considerably deeper nitride layer and unique machining features. 
• Callies Compstar Xtreme Connecting Rods (Part# CST6418MS0LCAX)
• • ​Conservatively rated at 1000HP
  • 4340 Forged H-Beam 
  • ARP L19 Fasteners
• Mahle Motorsports Performance Cast Piston Kit
  • ​Rated up to 1000HP
  • Designed for street/strip or pulling trucks making 400-1000HP that still get used as a daily driver or work truck. Machined from OE castings (retaining the cast iron ring insert) to give the same driveability and longevity of a replacement piston with additional strength necessary for modified engines. These Pistons are built for customers looking to get 100,000+ miles on a high horsepower application. Unlike some of the higher HP forged pistons which need to be replaced every 20,000 to 30,000 miles, these Mahle Pistons are built to last.
• 1x ATI Super Damper (Part# 917369) 
  • Free up some horsepower while prolonging your diesel’s crankshaft life.Keep damaging crank harmonics away. ATI Super Harmonic Dampers are proven to be 30 percent more effective than stock dampers. That means a smoother running engine with improved power output—up to 12 more horsepower. ATI Super Harmonic Dampers are also re-buildable and tunable by replacing, removing, and adjusting the elastomer strips. And, since the damper bolts right to the crank hub, the timing marks are always in the same spot. So, when the marks start to move, you know it’s time to replace the elastomer strips.
• 1x Billet Steel FlexPlate (Part# SD-BILLET-FLEX)
  • Billet 1 Piece Flexplates are lighter and stronger than stock
  • Meets the new SFI 29.3 specification for competition use
• 1x Billet Main Girdle
  • ​The Duramax engine suffers from main cap movement at high power levels. Even with ARP main studs and cross bolts, we have seen evidence in the bearing wear, of the cap flexing towards the front or the rear of the engine. This Billet Main Girdle is a solution that provides structure to the top of the main caps, linking all of the main caps together, as well as linking the main caps to the pan rail.  
  • The two factory bolts from Flywheel/Flexplate Cover to Upper Oil Pan will not be used after installing this Billet Main Girdle. This will not cause any leaks or strength concerns.
  • If you are using any aftermarket high capacity oil pan on your vehicle in conjunction with this girdle, it may cause interference with the factory crossmember.
• Mahle/Clevite Connecting Rod Bearing Set
• Tri-Metal Performance Main Bearing Set 
• Mahle/Clevite Thrust Washer Set
• Dmax Performance Oil Pump
• ARP Main Stud Set (Extended for the Billet Main Girdle)
• Lower Gasket Kit
• Covers and some small parts are not included and will need to be transferred from the stock short block

Optional:

• Fingers Oval Bowl Pistons, Please Call 877-469-3629
• Optional DmaxStore Performance Kits
• DmaxStore Performance Crankshaft Gear
• Carrillo Pro-H 9321 Connecting Rods (Part# GMB66DM0HS6418B7H)

Notes:

• 1 Year warranty against manufacturing defects from ship date
• Core Charge on shipping container and core block only, Please contact us once received to arrange return shipment of shipping container and block
• We recommend using a grade C series head gasket to run with this short block
  
• This is a custom order part, once it has been processed, it CANNOT be canceled, returned, or refunded
• NOT LEGAL FOR SALE OR USE IN CALIFORNIA. THE MANUFACTURE, SALE, OFFER FOR SALE, OR INSTALLATION OF THIS PRODUCT MAY ALSO BE ILLEGAL NATIONWIDE UNDER THE FEDERAL CLEAN AIR ACT (42 U.S.C. § 7522(A)(3)
• This product is ONLY designed for closed course racing where it is legal to do so. Any other use will be in violation of local, state, and federal laws. We are not responsible for unlawful use of this product