{"product_id":"dfc-diesel-th6003stsoalbhd-tow-haul-hd-series-standard-speed-of-air-long-block-2003-ford-f250-f350-6-0l-powerstroke","title":"DFC Diesel TH6003STSOALBHD Tow\/Haul HD Series Standard Speed Of Air Long Block | 2003 Ford F250\/F350 6.0L Powerstroke","description":"\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSupports up to 900 flywheel horsepower\u003c\/li\u003e\n\u003cli\u003eHandles 500–750 HP towing demands\u003c\/li\u003e\n\u003cli\u003eIncludes Wagler or Carrillo connecting rods\u003c\/li\u003e\n\u003cli\u003eHeavy-duty flexplate for added durability\u003c\/li\u003e\n\u003cli\u003eBalanced rotating assembly for smooth power\u003c\/li\u003e\n\u003cli\u003eNew OEM balancer enhances engine stability\u003c\/li\u003e\n\u003cli\u003eARP or OptiTorque head studs included\u003c\/li\u003e\n\u003cli\u003eProfessionally machined and bored engine block\u003c\/li\u003e\n\u003cli\u003eAll new OEM or equivalent internals\u003c\/li\u003e\n\u003cli\u003eRemanufactured heads with new components\u003c\/li\u003e\n\u003cli\u003eComplete top-end gasket kit included\u003c\/li\u003e\n\u003cli\u003eBacked by 5-year, 160,000km warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eWhen Your Truck Needs Power That Lasts All Day\u003c\/h4\u003e\n\u003cp\u003eIf you’re hauling serious weight or just want a 6.0L Powerstroke that won’t fold under pressure, the DFC Tow\/Haul HD Series Standard Speed Long Block is built to take it. Designed for hard-working 2003 F250 and F350 trucks, this engine balances street reliability with the kind of towing strength that gives you confidence on steep grades or long hauls. It’s rated to handle up to 900 horsepower at the flywheel, so you’ve got plenty of room to upgrade as your build evolves. At the same time, it’s tuned to operate best in that 500 to 750 horsepower sweet spot where towing performance really shines. Whether you're pulling a fully loaded trailer or just want peace of mind every time you fire it up, this setup gives you a rock-solid foundation. With a new OEM balancer, heavy-duty flexplate, and balanced rotating assembly, it stays smooth even when the work gets rough. This engine isn't just about brute strength, it’s about delivering reliable, usable power where and when it matters most.\u003c\/p\u003e\n\u003ch4\u003eEvery Critical Component Built With Precision In Mind\u003c\/h4\u003e\n\u003cp\u003eThe DFC Diesel TH6003STSOALBHD Long Block is a fully remanufactured powerplant crafted with industry-leading quality and attention to detail. Each engine block is professionally machined and bored to accept oversized pistons, improving sealing and compression for a tighter, more consistent build. Internally, the setup includes all new OEM or equivalent pistons, rings, and gaskets, along with ARP 2000 or OptiTorque head studs and ARP rod bolts to ensure dependable strength where it matters. The cylinder heads are fully remanufactured with new seats, guides, valves, and seals, and are resurfaced and magnafluxed for total reliability. This long block includes a full top-end gasket kit and comes pre-assembled with rockers and pushrods already installed, making installation cleaner and faster. Unique to the HD Series, this build adds either Wagler or Carrillo forged rods depending on availability, giving you the internal strength to support higher horsepower goals without sacrificing longevity. When paired with the HD flexplate and balanced rotating assembly, this engine delivers the durability and refinement needed for daily use, heavy towing, or performance-driven builds.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e Fits: \u003c\/strong\u003e 2003 Ford F250\/F350 6.0L Powerstroke\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned for 2003 Ford F250 and F350 6.0L Powerstroke\u003c\/li\u003e\n\u003cli\u003eBest suited for towing applications between 500 and 750 HP\u003c\/li\u003e\n\u003cli\u003eCapable of supporting builds up to 900 HP at the flywheel\u003c\/li\u003e\n\u003cli\u003eIncludes all upgrades from Street and Tow\/Haul Series\u003c\/li\u003e\n\u003cli\u003eComes with either Wagler or Carrillo rods based on availability\u003c\/li\u003e\n\u003cli\u003eEngine includes ARP or OptiTorque head studs depending on supply\u003c\/li\u003e\n\u003cli\u003eRemanufactured using all new OEM or equivalent internal components\u003c\/li\u003e\n\u003cli\u003eIncludes complete top-end gasket kit for installation\u003c\/li\u003e\n\u003cli\u003eBlock is bored for oversized pistons to enhance performance\u003c\/li\u003e\n\u003cli\u003eRotating assembly is professionally balanced for smooth operation\u003c\/li\u003e\n\u003cli\u003eCovered by a 5-year or 160,000 kilometer manufacturer warranty\u003c\/li\u003e\n\u003cli\u003eLong block ships with rockers and pushrods pre-installed\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3 data-start=\"884\" data-end=\"931\"\u003eStreet Series vs Tow\/Haul vs Tow\/Haul HD\u003c\/h3\u003e\n\u003cul data-start=\"933\" data-end=\"1398\"\u003e\n\u003cli data-start=\"933\" data-end=\"1099\"\u003e\n\u003cp data-start=\"935\" data-end=\"1099\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003eStreet Series:\u003c\/span\u003e Ideal for daily driving, light work, and diesel enthusiasts. Focuses on reliability upgrades over stock, with head stud and sealing improvements.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1100\" data-end=\"1240\"\u003e\n\u003cp data-start=\"1102\" data-end=\"1240\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003eTow\/Haul Series:\u003c\/span\u003e All Street upgrades plus added performance parts for higher load and towing power. Supports builds up to ~700 HP.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1241\" data-end=\"1398\"\u003e\n\u003cp data-start=\"1243\" data-end=\"1398\"\u003e\u003cstrong\u003e\u003cspan style=\"text-decoration: underline;\"\u003eTow\/Haul HD Series:\u003c\/span\u003e The most robust option. Adds heavy-duty internals like Wagler rods and a balanced rotating assembly for 800+ HP capability.\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"1405\" data-end=\"1445\"\u003eStandard\/Auto vs Standard vs Auto\u003c\/h3\u003e\n\u003cul data-start=\"1447\" data-end=\"1706\"\u003e\n\u003cli data-start=\"1447\" data-end=\"1557\"\u003e\n\u003cp data-start=\"1449\" data-end=\"1557\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003eStandard\/Auto:\u003c\/span\u003e Compatible with both manual and automatic transmissions. Offers the most flexibility.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1558\" data-end=\"1636\"\u003e\n\u003cp data-start=\"1560\" data-end=\"1636\"\u003e\u003cstrong\u003e\u003cspan style=\"text-decoration: underline;\"\u003eStandard:\u003c\/span\u003e Built specifically for manual transmission configurations.\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1637\" data-end=\"1706\"\u003e\n\u003cp data-start=\"1639\" data-end=\"1706\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003eAuto\u003c\/span\u003e: Built specifically for automatic transmission setups.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DFC Diesel","offers":[{"title":"Default Title","offer_id":68060706636049,"sku":"DDU-TH6003STSOALBHD","price":20890.48,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0692\/0477\/1089\/files\/dfc-diesel-soa-street-series-long-block-crate-engine-2003-ford-6.0l-power-stroke-auto-transmission-ss6003ausoalb__20028_65c20b6a-cf36-4da3-9f6e-8d7fc046b50e.jpg?v=1794721842","url":"https:\/\/gautoparts.com\/products\/dfc-diesel-th6003stsoalbhd-tow-haul-hd-series-standard-speed-of-air-long-block-2003-ford-f250-f350-6-0l-powerstroke","provider":"Guaranteed Auto Parts","version":"1.0","type":"link"}