{"product_id":"gm-ls-compatible-427-c-i-pro-series-engine-horsepower-long-block-power-adder-motorsports","title":"BluePrint Motorsports GM LS Compatible 427 c.i. Pro Series Engine - Power Adder - Long Block","description":"\u003cp\u003e\u003cstrong\u003e\u003ci\u003e\u003cspan data-olk-copy-source=\"MessageBody\"\u003e**BluePrint Motorsports engines are built for maximum performance and are intended for extreme duty race applications. If this engine is used in a street application our normal 30 month, 50,000-mile warranty applies, if used in sanctioned racing no warranty, expressed, or implied.\u003c\/span\u003e\u003c\/i\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch4\u003eOverview:\u003c\/h4\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan data-olk-copy-source=\"MessageBody\"\u003eBluePrint Motorsports introduces the ultimate 427ci LS Chevy-compatible long block, purpose-built for maximum boosted horsepower. Whether you’re chasing wins on the drag strip, sliding through drift circuits, tackling off-road trails, or carving up autocross courses, this engine delivers the perfect blend of power and reliability. At its foundation is a high-strength LSX-style cast-iron block, designed to handle extreme boost from nitrous, superchargers, or turbos. Topping it off are BluePrint Engines LS3 aluminum heads, paired with a BluePrint hydraulic roller cam for optimized airflow and performance across the powerband. Inside, a forged 8cwt crankshaft and forged H-beam rods provide rock-solid strength, while Mahle 2618 custom forged pistons ensure unmatched durability under pressure.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4\u003eDescription: \u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eHorsepower \u0026amp; Torque: 610 Horsepower \/ 510 ft. lbs. Torque\u003c\/li\u003e\n\u003cli\u003eCompression Ratio: 9.5:1\u003c\/li\u003e\n\u003cli\u003eBluePrint Engines LS3 Aluminum Heads\u003c\/li\u003e\n\u003cli\u003eBluePrint Engines Hydraulic Roller Cam\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eBluePrint Engines Forged Crankshaft\u003c\/li\u003e\n\u003cli\u003eMahle 2618 Custom Forged Pistons\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003cspan\u003eBlock:\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBluePrint Engines High Strength Cast Iron (LSX Style) Block \u003c\/li\u003e\n\u003cli\u003eIncreased Deck Thickness and Strength Webbing\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eUtilizes OEM LS3 Front and Rear Covers\u003c\/li\u003e\n\u003cli\u003eImproved Water Jacket Design\u003c\/li\u003e\n\u003cli\u003eExtended Cylinder Skirt\u003c\/li\u003e\n\u003cli\u003e1-piece Rear Main Seal\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003ePriority Main Oiling\u003c\/li\u003e\n\u003cli\u003e4.0695\" Bore\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e6-bolt studded mains\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eBillet Main Caps\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eRotating Assembly:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eForged 8cwt Crankshaft\u003c\/li\u003e\n\u003cli\u003e4.125\" Stroke\u003c\/li\u003e\n\u003cli\u003eForged H-Beam 6.125\" Connecting Rods\u003c\/li\u003e\n\u003cli\u003eMahle Custom 2618 Forged Pistons\u003c\/li\u003e\n\u003cli\u003eInternally Balanced Front and Rear\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCylinder Heads:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eBluePrint Aluminum Cylinder Heads -PS8020\u003c\/li\u003e\n\u003cli\u003eLSX Style 6 Bolt Studded Heads\u003c\/li\u003e\n\u003cli\u003e70cc Chamber\u003c\/li\u003e\n\u003cli\u003e2.165\" Intake \/ 1.600\" Exhaust Valves\u003c\/li\u003e\n\u003cli\u003e259cc Intake \/ 102cc Exhaust Runners\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCam Specs:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eHydraulic Roller\u003c\/li\u003e\n\u003cli\u003e.641 intake \/ .641 Exhaust Lift\u003c\/li\u003e\n\u003cli\u003e236 Intake \/ 256 Exhaust Duration\u003c\/li\u003e\n\u003cli\u003e@.050-115.5 Degree Lobe Separation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eAlso Includes:\u003cspan\u003e\u003c\/span\u003e\n\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eThis engine does NOT come with a Fuel Injection ECU and Wiring Harness\u003c\/li\u003e\n\u003cli\u003eHarmonic Balancer\u003c\/li\u003e\n\u003cli\u003eValve Covers\u003c\/li\u003e\n\u003cli\u003eLS Swap Oil Pan\u003c\/li\u003e\n\u003cli\u003eTiming Cover\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eNotes:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eBluePrint Motorsports engines are built for maximum performance and are intended for extreme duty applications. Because of the high-stress nature of their use, these engines are sold without any warranty, expressed, or implied.\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"product-custom-info\"\u003e\u003ca style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\" title=\"https:\/\/www.p65warnings.ca.gov\/\" href=\"https:\/\/www.p65warnings.ca.gov\/\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2160\/9839\/files\/warning.png?v=1634161036\" alt=\"\"\u003e \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2160\/9839\/files\/emissions5.png?v=1634153040\" alt=\"\"\u003e\u003c\/a\u003e\u003c\/div\u003e","brand":"BluePrint Engines","offers":[{"title":"Default Title","offer_id":50468188586270,"sku":"BPMS4271LS","price":17040.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/7171\/1262\/files\/PSLS4271LS_1.jpg?v=1767160758","url":"https:\/\/platinumhpsolutions.myshopify.com\/fr\/products\/gm-ls-compatible-427-c-i-pro-series-engine-horsepower-long-block-power-adder-motorsports","provider":"Platinum High Performance Solutions, LLC.","version":"1.0","type":"link"}