DFC Diesel SS660607LBZSOALB Street Series Speed Of Air Long Block (Standard/Auto) | 2006-2007 GM/Chevrolet 2500HD/3500HD 6.6L Duramax LBZ

Features:

• 5-year/160,000 km warranty coverage
• Total Seal gapless piston rings included
• ARP or OptiTorque head studs installed
• EDM doweled oil pump gear for durability
• Woodruff keyed camshaft for secure fitment
• Precision machining with advanced Rottler equipment
• Upgraded gasket sealing in leak-prone areas
• All new pistons, rings, and bearings
• New gaskets, seals, and valve components
• Cylinder heads resurfaced and magnafluxed
• Preset rockers and pushrods to factory specs
• Complete top-end gasket kit included

Power And Reliability Built For Real Work

When you drop a DFC Diesel SS660607LBZSOALB Street Series Long Block into your 2006-2007 GM or Chevrolet 2500HD or 3500HD with a 6.6L Duramax LBZ, you are setting yourself up for years of dependable performance. This engine is built for truck owners who expect their rig to work hard every day, whether it’s hauling a heavy trailer across the country or tackling a long commute in all weather conditions. The Street Series is more than a simple replacement, it’s a serious upgrade over stock, with key improvements in common problem areas that give you peace of mind and better longevity. Every unit comes with premium components like Total Seal gapless piston rings, ARP or OptiTorque head studs, and a precision-machined oil pump gear for extra durability. It is backed by one of the most comprehensive warranties you will find anywhere, covering you for 5 years or 160,000 km. This is the kind of long block that takes punishment without flinching, making it a perfect match for diesel enthusiasts, work trucks, and daily drivers alike. Once it’s in your truck, you can count on it to keep pulling, towing, and driving strong.

Engineered With Precision And Built To Last

The DFC Diesel SS660607LBZSOALB Street Series Long Block starts with a fully re-manufactured block that has been professionally machined and bored for use with next over-sized pistons. Inside, you will find all new OEM or equivalent pistons, rings, bearings, and gaskets to meet or exceed original specifications. The cylinder heads are completely re-manufactured with new seats, guides, valves, and stem seals, and are both resurfaced and magnafluxed to ensure flawless sealing and strength. Rockers and pushrods are preset to exact factory tolerances, and every engine comes with a complete top-end gasket kit to make installation straightforward. Advanced Rottler machining equipment is used to maintain consistent, precise tolerances across every build. DFC also incorporates improved gasket sealing methods in known leak-prone areas to reduce maintenance issues down the road. From top to bottom, this long block is built with premium components and careful craftsmanship to deliver reliable power you can trust for the long haul.

Fits: 2006, 2007 GM/Chevrolet 2500HD/3500HD 6.6L Duramax LBZ

Notes:

• Designed for 2006-2007 GM/Chevrolet 2500HD and 3500HD with 6.6L Duramax LBZ
• Street Series is ideal for work trucks, daily drivers, and diesel enthusiasts
• Remanufactured to factory specifications using all new premium components
• Block is professionally machined and bored for next over-sized pistons
• Includes ARP or OptiTorque head studs depending on availability
• Comes with a complete top-end gasket kit for installation
• Cylinder heads are fully re-manufactured, resurfaced, and magnafluxed
• Rockers and pushrods are preset to exact factory specifications
• 5-year / 160,000 km (100,000 mi) manufacturer warranty coverage
• Built with upgrades to address common factory problem areas

Street Series vs Tow/Haul vs Tow/Haul HD

• Street Series: Ideal for daily driving, light work, and diesel enthusiasts. Focuses on reliability upgrades over stock, with head stud and sealing improvements.

• Tow/Haul Series: All Street upgrades plus added performance parts for higher load and towing power. Supports builds up to ~700 HP.

• Tow/Haul HD Series: The most robust option. Adds heavy-duty internals like Wagler rods and a balanced rotating assembly for 800+ HP capability.

Standard/Auto vs Standard vs Auto

• Standard/Auto: Compatible with both manual and automatic transmissions. Offers the most flexibility.

• Standard: Built specifically for manual transmission configurations.

• Auto: Built specifically for automatic transmission setups.