DFC Diesel SS671116SOALB Street Series Speed Of Air Long Block | 2011-2016 Ford F250/F350 6.7L Powerstroke

Features:

• Built to factory specs with premium components
• Designed for 2011-2016 Ford F250 and F350
• Includes ARP or OptiTorque head studs
• Complete long block with cylinder heads included
• Total Seal gapless piston rings for better sealing
• All rockers preset to exact factory specifications
• Professionally machined and bored engine block
• Includes complete top-end gasket kit
• All new OEM pistons, rings, and gaskets used
• Remanufactured cylinder heads with new valves and guides
• Backed by a 5-year 160,000 km warranty
• Upgrades address common factory problem areas

Transform Your Powerstroke Into A Reliable Workhorse

When your Ford Super Duty is the backbone of everything you do, the right engine can make all the difference. The DFC Diesel 6.7 Powerstroke Street Series Auto Speed Of Air Long Block gives your 2011-2016 F250 or F350 the strength and dependability to handle long hauls, tough job sites, and daily driving with ease. Designed as DFC’s flagship build, it offers key upgrades that address common factory weaknesses while delivering consistent power. With premium components like ARP or OptiTorque head studs and Total Seal gapless piston rings, this long block provides the kind of durability that stands up to heavy workloads. The complete assembly includes everything you need to bring new life to your truck, from fully remanufactured cylinder heads to a comprehensive top-end gasket kit. Backed by a 5-year 160,000 km warranty, you can install with confidence knowing this engine was built to perform for the long haul. Whether you are restoring a daily driver or upgrading a work truck, this engine is built to keep your Powerstroke running strong for years to come.

Precision Built For Power And Long Term Durability

The DFC Diesel 6.7 Powerstroke Street Series Auto Speed Of Air Long Block is meticulously remanufactured using advanced machining processes to meet and exceed OEM standards. Each block is professionally machined and bored for oversized pistons to ensure perfect fitment and smooth operation. The inclusion of ARP or OptiTorque head studs adds superior clamping force to handle high cylinder pressures, while Total Seal gapless piston rings improve compression and reduce blow-by. Every engine uses all new OEM or equivalent pistons, rings, bearings, and gaskets to guarantee consistent quality and reliability. The remanufactured cylinder heads are fitted with new valves, guides, and stem seals, then resurfaced and magnafluxed for maximum durability. With rockers preset to exact factory specifications, installation is straightforward and minimizes downtime. The complete top-end gasket kit included with the long block makes the rebuild process more efficient, giving you everything needed in one package. This engine is designed for truck owners who want dependable power paired with precise engineering for lasting performance.

Fits: 2011, 2012, 2013, 2014, 2015, 2016 Ford F250/F350 6.7L Powerstroke

Notes:

• Engine is a remanufactured 6.7L Powerstroke long block
• Compatible with 2011-2016 Ford F250 and F350 models
• Street Series is DFC Diesel's flagship engine build
• Designed for work trucks, daily drivers, and enthusiasts
• Includes ARP or OptiTorque head studs depending on availability
• Built to address common factory problem areas in 6.7 engines
• Professionally machined block bored for oversized pistons
• Uses all new OEM or equivalent pistons, rings, and gaskets
• Remanufactured cylinder heads include new valves and guides
• Total Seal gapless piston rings included standard
• Comes with a 5-year 160,000 km warranty
• Includes complete top-end gasket kit for installation

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.