{"product_id":"750-series-5-7l-long-block","title":"5.7L LS Long Block - 750 Series","description":"\u003cp\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 street series 5.7 long block is the logical next step up from the base 5.3.\u003cspan style=\"mso-spacerun: yes;\"\u003e  \u003c\/span\u003eWe utilize the same 5.3 core and bore the block to 3.898” and use a flat top LS1 piston.\u003cspan style=\"mso-spacerun: yes;\"\u003e  \u003c\/span\u003eTaking the bore from 3.780” to 3.898” really wakes up the platform.\u003cspan style=\"mso-spacerun: yes;\"\u003e  \u003c\/span\u003eThis long block is a good choice to replace or upgrade that tired stock 5.3 in your ride.\u003cspan style=\"mso-spacerun: yes;\"\u003e  \u003c\/span\u003eWhether you are wanting stock idle for momma’s grocery getter or some nasty chop for the hot rod, this long block build can get you there on a budget.\u003cspan style=\"mso-spacerun: yes;\"\u003e  \u003c\/span\u003eTake a look at the camshafts we recommend for this build or let us know what camshaft you want in yours.\u003cspan style=\"mso-spacerun: yes;\"\u003e  \u003c\/span\u003eIf you plan on adding a power adder down the road you should consider upgrading to one of our 1000 Series combinations with forged rods and pistons.  Naturally Aspirated with a small cam (214\/220, .525\/.525, 107 LSA) this combination made 496HP\/479TQ and with the upgrade to the FED Boostline Cylinder Heads made over 500HP.  Dyno Graphs are below.  With a larger cam and\/or power adder selection these heads will really provide great HP\/Dollar!\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003e\u003cspan lang=\"EN\" style=\"font-size: 10.0pt; line-height: 115%;\"\u003eBuild Specs:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"MsoNormal\"\u003e\u003cspan lang=\"EN\" style=\"font-size: 10.0pt; line-height: 115%;\"\u003eGM Iron 5.3 Block\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e\u003cspan lang=\"EN\" style=\"font-size: 10.0pt; line-height: 115%;\"\u003eGM Stock 5.3 Crank\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e\u003cspan lang=\"EN\" style=\"font-size: 10.0pt; line-height: 115%;\"\u003eGM Gen4 Stock Rods\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e\u003cspan lang=\"EN\" style=\"font-size: 10.0pt; line-height: 115%;\"\u003eARP Rod Bolts\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e\u003cspan lang=\"EN\" style=\"font-size: 10.0pt; line-height: 115%;\"\u003e4032 Forged Pistons\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e\u003cspan lang=\"EN\" style=\"font-size: 10.0pt; line-height: 115%;\"\u003ePerformance Ductile Moly Rings set: 1.5, 1.5, 3mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e\u003cspan lang=\"EN\" style=\"font-size: 10.0pt; line-height: 115%;\"\u003eStock Replacement Lifters and Trays\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e\u003cspan style=\"font-size: 10.0pt; line-height: 115%;\" lang=\"EN\"\u003eSingle roller timing chain \u0026amp; gear set\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e\u003cspan style=\"font-size: 10.0pt; line-height: 115%;\" lang=\"EN\"\u003eCloyes timing chain dampener, also added to all gen3 builds\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e\u003cspan style=\"font-size: 10.0pt; line-height: 115%;\" lang=\"EN\"\u003ePushrods, one piece - hardened, 7.400”\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e\u003cspan style=\"font-size: 10.0pt; line-height: 115%;\" lang=\"EN\"\u003eGM Rockers with BTR trunnion kits installed\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e\u003cspan style=\"font-size: 10.0pt; line-height: 115%;\" lang=\"EN\"\u003eGM 706\/862 Heads, remanufactured - New springs \u0026amp; seals\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e\u003cspan style=\"font-size: 10.0pt; line-height: 115%;\" lang=\"EN\"\u003eClevite Main and Rod Bearings\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e\u003cspan style=\"font-size: 10.0pt; line-height: 115%;\" lang=\"EN\"\u003eDurabond Cam Bearings\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\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\u003cli class=\"MsoNormal\"\u003e\u003cspan style=\"font-size: 10.0pt; line-height: 115%;\" lang=\"EN\"\u003eNew Oil Pump\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e\u003cspan style=\"font-size: 10.0pt; line-height: 115%;\" lang=\"EN\"\u003eNew Head Bolts\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e\u003cspan style=\"font-size: 10.0pt; line-height: 115%;\" lang=\"EN\"\u003eFel Pro Gaskets Throughout\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e\u003cspan style=\"font-size: 10.0pt; line-height: 115%;\" lang=\"EN\"\u003eMLS Head Gaskets\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e\u003cspan style=\"font-size: 10.0pt; line-height: 115%;\" lang=\"EN\"\u003eGM stock valve covers\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e\u003cspan style=\"font-size: 10.0pt; line-height: 115%;\" lang=\"EN\"\u003eGM stock truck oil pan and pickup tube\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e\u003cspan style=\"font-size: 10.0pt; line-height: 115%;\" lang=\"EN\"\u003eGM stock front cover\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e\u003cspan style=\"font-size: 10.0pt; line-height: 115%;\" lang=\"EN\"\u003eGM stock valley cover\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\"\u003e\u003cspan style=\"font-size: 10.0pt; line-height: 115%;\" lang=\"EN\"\u003eGM stock rear seal housing\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!----\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":48873923903783,"sku":"BL57750LB","price":8200.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0878\/0664\/0423\/files\/BL327JLB.png?v=1781540800","url":"https:\/\/www.boostlineperformance.com\/products\/750-series-5-7l-long-block","provider":"Boostline Performance","version":"1.0","type":"link"}