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TH+660104LB7CMP DFC Complete Long Block Engine - Tow/Haul Plus Series - GM 6.6L Duramax 2001-2004 (LB7 Engine Code)

Mftr. Part#: TH+660104LB7CMP
Manufacturer: DFC Diesel
2001-2004 GM Duramax 6.6L LB7 - DFC's Tow Haul Series + Complete Long Block engines come standard with all the upgrades found in the Street Series model as well as several enhancements to make this engine perfect for towing, hauling and performance applications up to 500HP. Comes with important upgrades to key common problem areas, an Aurora 4000 Turbocharger, and a 5-year/160,000km warranty throughout North America.

PRODUCT DETAILS (click to expand)

Mftr. Part#TH+660104LB7CMP

PRODUCT SPECS (click to expand)

Attribute nameAttribute value
Engine SeriesTow/Haul +
Engine TypeComplete Long Block
Includes ARP Head StudsYes
HP Rating500HP



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Accept Cores Charge $3000 Engine + $500 Crate - View Shipping & Return Policies



  • Standard and Automatic Transmission
  • Most comprehensive 5-year/160,000km (100,000 mile) warranty in North America.
  • DFC exclusive - custom EDM doweled oil pump gear.
  • Machined with some of the most advanced ROTTLER machining equipment in North America.
  • Stage 2 performance camshaft.
  • Improved gasket sealing methods in common leakage areas.
  • Mahle Motorsports heavy duty pistons.
  • New rings, bearings, gaskets, seals, stem seals and cast guides.
  • Hamilton heavy duty valve springs.
  • DFC heavy duty push rods
  • ARP 2000 series cylinder heads studs.
  • Added dowels to crankshaft for harmonic balancer and trigger gear assembly.
  • Cylinder blocks are blueprinted to tighter tolerances than OEM specifications using their Rottler F69 ATC


  • DFC Long Block Engine
  • Fuel Injectors
  • Aurora 4000 Turbo Charger
  • Oil Cooler