{"product_id":"remanufactured-duramax-long-block-callies-crankshaft-afo-camshaft","title":"Remanufactured 6.6L Duramax Long Block with Callies Crankshaft \u0026 Stage 1 AFO Cam, 2001-2016 Chevy\/GMC","description":"\u003ch2\u003eThe Callies + AFO Duramax Long Block, Done Right.\u003c\/h2\u003e\n\u003cp\u003eA professionally remanufactured 6.6L Duramax long block for 2001-2016 Chevy\/GMC (LB7, LLY, LBZ, LMM, LML) with a new \u003ca href=\"https:\/\/www.callies.com\/catalog\/product\/compstar-duramax\/\" target=\"_blank\" rel=\"noopener\"\u003eCallies Compstar\/Durastar crankshaft\u003c\/a\u003e and a Stage 1 alternate firing order (AFO) camshaft. It's built to handle stock (360-397 HP) to over 700 HP without major modifications.\u003c\/p\u003e\n\u003ch3\u003eWhy Warren Diesel\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNew Callies Compstar\/Durastar crankshaft\u003c\/strong\u003e plus a \u003cstrong\u003eStage 1 AFO camshaft\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfessionally remanufactured and quality-controlled\u003c\/strong\u003e, with only the highest quality replacement parts\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eStronger LB7 pistons\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBalanced crankshaft with keyways added\u003c\/strong\u003e so the crank and cam gears can't spin\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eARP main bolts, rod bolts and head studs\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptional upgrades:\u003c\/strong\u003e O-ringed heads, high-rev valvetrain, ported and polished heads (call to order)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy an AFO Cam?\u003c\/h3\u003e\n\u003cp\u003eThe stock firing order (1-2-7-8-4-5-6-3) loads the front third of the crank, a common cause of broken cranks in 2007-2016, higher-horsepower engines. The AFO cam (1-5-6-3-4-2-7-8) spreads combustion along the crank and toward the flexplate. That can extend crank life and steady the engine for more power, though it isn't a major power gain on its own. We only offer it with a new Callies crank, because a used crank is already stressed. \u003ca href=\"https:\/\/www.dieselworldmag.com\/diesel-technology\/alternate-firing-camshaft-duramax\/\" target=\"_blank\" rel=\"noopener\"\u003eLearn more\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eOrdering \u0026amp; Shipping\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNormal lead time is 7-10 days. Performance builds may take longer if a part isn't on hand.\u003c\/li\u003e\n\u003cli\u003eFreight: call \u003ca href=\"tel:8662762511\"\u003e866-276-2511\u003c\/a\u003e for a freight quote. Freight orders ship once shipping charges are approved.\u003c\/li\u003e\n\u003cli\u003eCore: choose Send core first, or Send core after to add the core charge ($1,000 LB7\/LLY, $1,200 LBZ\/LMM, $2,200 LML).\u003c\/li\u003e\n\u003cli\u003eWarranty: a 12-month, unlimited-mile Repair \u0026amp; Replacement warranty is included at no charge (labor not covered). Nationwide parts \u0026amp; labor coverage for 12 or 24 months is available through North American Auto Care (NAAC).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"text-align:center;color:#ff0000;\"\u003e\u003cstrong\u003eNOTE: Please read our return core policy for acceptable core returns!!!\u003c\/strong\u003e\u003c\/p\u003e\u003cp style=\"text-align:center;\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0688\/1588\/0424\/files\/engine_return_core_sheet.pdf?v=1763587978\" target=\"_blank\" rel=\"noopener\" style=\"color:#ff0000;\"\u003e\u003cstrong\u003eClick here for RETURN CORE SHEET\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhich engines does this fit?\u003c\/strong\u003e\u003cbr\u003eLB7, LLY, LBZ (including early 2006 VIN code 2), LMM and LML 6.6L Duramax.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I put an AFO cam on my used crank?\u003c\/strong\u003e\u003cbr\u003eWe don't recommend it. That's why this package pairs the AFO cam with a new Callies crankshaft.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow much power can it handle?\u003c\/strong\u003e\u003cbr\u003eFrom stock (360-397 HP) to over 700 HP without major modifications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat warranty is included?\u003c\/strong\u003e\u003cbr\u003e12 months, unlimited miles, Repair \u0026amp; Replacement at no charge (labor not covered). NAAC parts \u0026amp; labor upgrades for 12 or 24 months are available.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow long until it ships?\u003c\/strong\u003e\u003cbr\u003eNormally 7-10 days. Performance builds may take longer.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs there a core charge?\u003c\/strong\u003e\u003cbr\u003eYes. Choose Send core first, or Send core after to add the core charge ($1,000 LB7\/LLY, $1,200 LBZ\/LMM, $2,200 LML). Please review the core return sheet above.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow is shipping handled?\u003c\/strong\u003e\u003cbr\u003eBy freight with a custom quote. Call \u003ca href=\"tel:8662762511\"\u003e866-276-2511\u003c\/a\u003e.\u003c\/p\u003e","brand":"Warren Diesel Injection LLC","offers":[{"title":"1 Year Repair \u0026 Replacement Warranty (Labor not covered) - FREE \/ LB7 \/ Send core first","offer_id":48688670507240,"sku":"WD1185-RR12-CF","price":11175.0,"currency_code":"USD","in_stock":true},{"title":"1 Year Repair \u0026 Replacement Warranty (Labor not covered) - FREE \/ LLY \/ Send core first","offer_id":48688670540008,"sku":"WD1188-RR12-CF","price":11175.0,"currency_code":"USD","in_stock":true},{"title":"1 Year Repair \u0026 Replacement Warranty (Labor not covered) - FREE \/ LBZ (early 06 Vin Code 2) \/ Send core first","offer_id":48688670572776,"sku":"WD1186-RR12-CF","price":11175.0,"currency_code":"USD","in_stock":true},{"title":"1 Year Repair \u0026 Replacement Warranty (Labor not covered) - FREE \/ LBZ \/ Send core first","offer_id":48688670605544,"sku":"WD1187-RR12-CF","price":11175.0,"currency_code":"USD","in_stock":true},{"title":"1 Year Repair \u0026 Replacement Warranty (Labor not covered) - 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