{"product_id":"454-sleeved-aluminum-ls-short-block-1000-series","title":"454 Sleeved Aluminum LS Short Block - 1000 Series","description":"\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size: 10.0pt; line-height: 115%; font-family: 'Arial',sans-serif; mso-fareast-font-family: Arial; mso-ansi-language: EN; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;\" lang=\"EN\"\u003eOur 1000 Series 454 short block has all the ingredients to pack the punch you're after.\u003cspan style=\"mso-spacerun: yes;\"\u003e  \u003c\/span\u003eThe aluminum block 454 Darton Sleeved LS combo is a proven performer and is quickly becoming our most popular short block combination.  The 454 is a big bore (4.185\") with a stroker crank (4.125\") making it a torquey beast. The large bore size allows you to use higher flowing cylinder heads, like the LS7 Style cylinder heads.  \u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 10.0pt; line-height: 115%; font-family: 'Arial',sans-serif; mso-fareast-font-family: Arial; mso-ansi-language: EN; mso-fareast-language: EN-US; mso-bidi-language: AR-SA;\" lang=\"EN\"\u003eThis combo is recommended for naturally aspirated combinations only!\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 10.0pt; line-height: 115%;\" lang=\"EN\"\u003eBuild Specs:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan style=\"font-size: 10.0pt; line-height: 115%;\" lang=\"EN\"\u003eSeasoned GM Aluminum 5.3L Gen 4 Block with Darton Sleeves\u003c\/span\u003e\u003cspan style=\"font-size: 10.0pt; line-height: 115%;\" lang=\"EN\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 10.0pt; line-height: 115%;\" lang=\"EN\"\u003eBlocks are CNC Decked, CNC Bored and CNC Torque Plate Honed\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e\u003cspan lang=\"EN\"\u003e1600hp Extreme RPM CCW Crankshaft with welded reluctor wheel\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e1600hp Rated Heavy Duty Connecting Rods\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e2618 Forged Pistons (Dependent on Availability) Your choice of Flat Top or Dish\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 10.0pt; line-height: 115%;\" lang=\"EN\"\u003e\u003cspan\u003eARP Main Studs\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 10pt;\"\u003eACL Main \u0026amp; Rod Bearings\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 10.0pt; line-height: 115%;\" lang=\"EN\"\u003eDurabond Cam Bearings\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-size: 10.0pt; line-height: 115%;\" lang=\"EN\"\u003eNew block plug kit and barbell\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!----\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":50961694884135,"sku":"BL4541000SBA","price":9999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0878\/0664\/0423\/files\/388-427.png?v=1765999945","url":"https:\/\/www.boostlineperformance.com\/products\/454-sleeved-aluminum-ls-short-block-1000-series","provider":"Boostline Performance","version":"1.0","type":"link"}