DFC Diesel TH671719SOALBHD Tow/Haul HD Series Speed Of Air Long Block | 2017-2019 Ford F250/F350 6.7L Powerstroke

Features:

• 5-year, 160,000 km limited warranty
• Built to handle up to 900 HP
• Ideal for towing between 500 and 700 HP
• Complete long block with cylinder heads
• Includes full top end gasket kit
• Wagler or Carrillo connecting rods installed
• Upgraded crankshaft gear retention system
• Fluidamper for improved vibration control
• HD flexplate for added durability
• Balanced rotating assembly for smooth performance
• All new pistons, rings, bearings, and gaskets
• Professionally machined block for oversized pistons

Push Your Powerstroke Beyond The Limits Of Heavy Hauling

If you are looking for a serious upgrade for your 2017-2019 Ford F250 or F350 6.7L Powerstroke, the DFC Diesel TH671719SOALBHD Tow/Haul HD Series Speed Of Air Long Block is built to take your truck to the next level. Designed for those who regularly tow heavy loads and want the potential to reach up to 900 HP, this engine is built for strength and longevity. It is perfect for trucks that spend their lives under a trailer, hauling equipment, or handling demanding work in the real world. Upgrades like Wagler or Carrillo connecting rods and a balanced rotating assembly give this engine the internal fortitude to handle extreme power while maintaining smooth, reliable operation. The Fluidamper and HD flexplate add another layer of durability, keeping vibration under control and ensuring consistent performance when the engine is under heavy stress. With all the enhancements of the Street and Tow/Haul Series combined with the added reinforcements of the HD build, this long block is as close to bulletproof as it gets for the 6.7 Powerstroke platform. Backed by a 5-year, 160,000 km warranty, it offers the kind of confidence you need when building a truck to handle serious work and power.

Precision Engineering Built For Extreme Power And Durability

The DFC Diesel TH671719SOALBHD Tow/Haul HD Series Speed Of Air Long Block is a re-manufactured 6.7L Powerstroke engine built with premium components and meticulous machining to meet the needs of high-performance towing applications. Designed to handle up to 900 HP at the flywheel, this long block uses a balanced rotating assembly to ensure smooth operation even at extreme power levels. The upgraded crankshaft gear retention system prevents gear slippage, an essential feature for engines subjected to high torque and load cycles. Wagler or Carrillo connecting rods provide exceptional strength to withstand the added stress of towing between 500 and 700 HP on a regular basis. A Fluidamper is included to control harmonics and reduce engine vibration, working in tandem with the HD flexplate for added reliability under heavy loads. Like all DFC engines, it is professionally machined and assembled with all new pistons, rings, bearings, and gaskets to exceed OEM standards. The result is a long block designed for truck owners who demand both raw power and long-term dependability from their 2017-2019 Ford F250 or F350.

Fits: 2017, 2018, 2019 Ford F250/F350 6.7L Powerstroke

Notes:

• Engine is a long block, not a complete drop-in
• Designed for 2017-2019 Ford F250 and F350 6.7L Powerstroke
• Built to handle up to 900 HP at the flywheel
• Ideal for towing between 500 and 700 HP regularly
• Includes all upgrades from Street and Tow/Haul Series engines
• Comes with Wagler or Carrillo connecting rods depending on availability
• Features upgraded crankshaft gear retention for added reliability
• Balanced rotating assembly for smooth high-power operation
• Includes Fluidamper and HD flexplate for improved durability
• Requires reuse or replacement of external components like turbo and fuel system
• Backed by a 5-year, 160,000 km (100,000 mi) limited warranty
• Professional installation is recommended to ensure proper performance and warranty coverage

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.