{"product_id":"blueprint-motorsports-gm-ls-compatible-427-c-i-pro-series-engine-power-adder-short-block","title":"BluePrint Motorsports GM LS Compatible 427 c.i. Pro-Series Engine - Power Adder - Short 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 data-start=\"100\" data-end=\"780\"\u003eThe new BPE LS Iron Block 427 Stroker Short Block is built as a strong foundation for high-horsepower power adder applications. Featuring a durable iron LS block and a fully forged rotating assembly, this short block is designed to handle supercharged, turbocharged, or nitrous combinations with confidence. It includes forged pistons with a 4.070 bore, forged H-beam rods, and an 8-weight forged crankshaft with a 58x reluctor ring, all internally balanced for smooth and reliable performance. Finished with a 6-bolt crank flange for added strength, this 427 LS short block is an excellent choice for serious street or race builds looking for durability and big power capability.\u003c\/p\u003e\n\u003ch4\u003eDescription: \u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eCompression Ratio: 9.5:1 with 70cc Heads\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 - Dish - 22cc\u003c\/li\u003e\n\u003cli\u003eInternally Balanced Front and Rear\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":47495402422502,"sku":"BPMS4271SBLS","price":7499.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2160\/9839\/files\/RepImages_1_7cee7ef4-e50b-471f-a01a-6ee88cb6eca0.jpg?v=1774896492","url":"https:\/\/blueprintengines.com\/products\/blueprint-motorsports-gm-ls-compatible-427-c-i-pro-series-engine-power-adder-short-block","provider":"BluePrint Engines","version":"1.0","type":"link"}