{"product_id":"dfc-diesel-th660607lbzsoalbhd-tow-haul-hd-series-speed-of-air-long-block-standard-auto-2006-2007-gm-chevrolet-2500hd-3500hd-6-6l-duramax-lbz","title":"DFC Diesel TH660607LBZSOALBHD Tow\/Haul HD Series Speed Of Air Long Block (Standard\/Auto) | 2006-2007 GM\/Chevrolet 2500HD\/3500HD 6.6L Duramax LBZ","description":"\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e5-year \/ 160,000 km warranty coverage\u003c\/li\u003e\n\u003cli\u003eBuilt to handle up to 900HP\u003c\/li\u003e\n\u003cli\u003eIdeal for towing 500-750HP regularly\u003c\/li\u003e\n\u003cli\u003eWagler forged connecting rods installed\u003c\/li\u003e\n\u003cli\u003eWager Stage 1 alternate firing camshaft\u003c\/li\u003e\n\u003cli\u003eBalanced rotating assembly for smooth operation\u003c\/li\u003e\n\u003cli\u003eCallies Compstar forged steel crankshaft\u003c\/li\u003e\n\u003cli\u003eATI dampener for improved vibration control\u003c\/li\u003e\n\u003cli\u003eHeavy-duty flexplate for strength and durability\u003c\/li\u003e\n\u003cli\u003eARP or OptiTorque head studs included\u003c\/li\u003e\n\u003cli\u003eCylinder heads resurfaced and magnafluxed\u003c\/li\u003e\n\u003cli\u003eComplete top-end gasket kit included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eUnmatched Power For Heavy Towing And Street Use\u003c\/h4\u003e\n\u003cp\u003eIf you want an engine that can handle serious towing power while still being street-friendly, the DFC Diesel Tow\/Haul HD Series Long Block is built to deliver. Designed for 2006-2007 GM and Chevrolet 2500HD and 3500HD trucks with the 6.6L Duramax LBZ, this build is capable of supporting up to 900HP at the flywheel. It is ideal for truck owners who regularly tow between 500 and 750HP but still want reliability for everyday driving. This engine includes all the proven upgrades from the Street Series and Tow\/Haul Series, plus heavy-duty enhancements like Wagler forged connecting rods, a Wager Stage 1 alternate firing camshaft, and a balanced rotating assembly. The ATI dampener and HD flexplate improve stability and reduce vibration, while the Callies Compstar crankshaft adds unmatched bottom-end strength. With this combination of durability and performance, you can confidently take on steep grades, heavy trailers, and long hauls. Backed by a 5-year or 160,000 km warranty, this is an investment that pays off every time you turn the key.\u003c\/p\u003e\n\u003ch4\u003ePrecision Built For Maximum Strength And Longevity\u003c\/h4\u003e\n\u003cp\u003eThe DFC Diesel TH660607LBZSOALBHD Tow\/Haul HD Series Long Block is engineered from the block up to meet the demands of high-horsepower towing and performance use. It begins with a professionally remanufactured block, machined and bored for next over-sized pistons to ensure a perfect fit. Wagler forged connecting rods provide exceptional strength under high load, while the Wager Stage 1 alternate firing camshaft helps balance cylinder pressure and improve torque delivery. A balanced rotating assembly, paired with a Callies Compstar crankshaft, ensures smooth, consistent operation at all power levels. The ATI dampener and HD flexplate add further stability to handle the increased stress of heavy-duty use. Cylinder heads are fully reconditioned with new seats, guides, valves, and stem seals, then resurfaced and magnafluxed for maximum sealing and reliability. Each build is finished with ARP or OptiTorque head studs and a complete top-end gasket kit, giving you everything needed for a clean, strong installation that will stand up to years of hard work.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e Fits: \u003c\/strong\u003e 2006, 2007 GM\/Chevrolet 2500HD\/3500HD 6.6L Duramax LBZ\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned for 2006-2007 GM\/Chevrolet 2500HD and 3500HD with 6.6L Duramax LBZ\u003c\/li\u003e\n\u003cli\u003eTow\/Haul HD Series is built for up to 900HP capability\u003c\/li\u003e\n\u003cli\u003eRecommended for towing between 500-750HP regularly\u003c\/li\u003e\n\u003cli\u003eIncludes all upgrades from Street and Tow\/Haul Series builds\u003c\/li\u003e\n\u003cli\u003eEngine is a remanufactured long block, not a complete drop-in\u003c\/li\u003e\n\u003cli\u003eEquipped with Wagler forged connecting rods for extreme strength\u003c\/li\u003e\n\u003cli\u003eWager Stage 1 alternate firing camshaft improves balance and torque\u003c\/li\u003e\n\u003cli\u003eBalanced rotating assembly for smoother, more consistent operation\u003c\/li\u003e\n\u003cli\u003eIncludes ATI dampener and heavy-duty flexplate for added stability\u003c\/li\u003e\n\u003cli\u003eCallies Compstar crankshaft provides exceptional bottom-end durability\u003c\/li\u003e\n\u003cli\u003eCylinder heads are resurfaced, magnafluxed, and fully reconditioned\u003c\/li\u003e\n\u003cli\u003eBacked by a 5-year \/ 160,000 km manufacturer warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-end=\"931\" data-start=\"884\"\u003eStreet Series vs Tow\/Haul vs Tow\/Haul HD\u003c\/h3\u003e\n\u003cul data-end=\"1398\" data-start=\"933\"\u003e\n\u003cli data-end=\"1099\" data-start=\"933\"\u003e\n\u003cp data-end=\"1099\" data-start=\"935\"\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-end=\"1240\" data-start=\"1100\"\u003e\n\u003cp data-end=\"1240\" data-start=\"1102\"\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-end=\"1398\" data-start=\"1241\"\u003e\n\u003cp data-end=\"1398\" data-start=\"1243\"\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-end=\"1445\" data-start=\"1405\"\u003eStandard\/Auto vs Standard vs Auto\u003c\/h3\u003e\n\u003cul data-end=\"1706\" data-start=\"1447\"\u003e\n\u003cli data-end=\"1557\" data-start=\"1447\"\u003e\n\u003cp data-end=\"1557\" data-start=\"1449\"\u003e\u003cstrong\u003e\u003cspan style=\"text-decoration: underline;\"\u003eStandard\/Auto:\u003c\/span\u003e Compatible with both manual and automatic transmissions. Offers the most flexibility.\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1636\" data-start=\"1558\"\u003e\n\u003cp data-end=\"1636\" data-start=\"1560\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003eStandard:\u003c\/span\u003e Built specifically for manual transmission configurations.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1706\" data-start=\"1637\"\u003e\n\u003cp data-end=\"1706\" data-start=\"1639\"\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":68060705063185,"sku":"DDU-TH660607LBZSOALBHD","price":28254.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0692\/0477\/1089\/files\/dfc-diesel-long-block-crate-engine-2001-2004-gm-6.6l-lb7-duramax-660104lb7lb__48046_5d7099a8-367a-4700-b71b-4b39f61106aa.jpg?v=1794721770","url":"https:\/\/gautoparts.com\/products\/dfc-diesel-th660607lbzsoalbhd-tow-haul-hd-series-speed-of-air-long-block-standard-auto-2006-2007-gm-chevrolet-2500hd-3500hd-6-6l-duramax-lbz","provider":"Guaranteed Auto Parts","version":"1.0","type":"link"}