{"product_id":"fleece-performance-gm-lsr-freedom-series-standard-deck-solid-aluminum-block","title":"Fleece Performance GM LSR Freedom Series Standard Deck Solid Aluminum Block","description":"\u003cdiv\u003e\n\u003cstrong\u003eSKU:\u003c\/strong\u003e \u003cspan itemprop=\"sku\"\u003eFPE-LSR-FMJ-SD10X\u003c\/span\u003e   |   \u003cstrong\u003eUPC:\u003c\/strong\u003e 732777409761\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch4\u003e\u003cstrong\u003eFleece Performance Freedom Series Solid Aluminum Full-Machined Billet Block - GM LSR Standard Deck (10X)\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe Fleece Performance Freedom Series solid aluminum block for the LSR (2024+ 6.6L Duramax) delivers the strongest foundation available for extreme-power builds that push far beyond factory cast-iron block limits. CNC-machined from a single 1,000+ lb 6061-T6 aircraft-grade aluminum forging, this standard-deck block provides massive cylinder wall and deck thickness, enhanced oiling, and approximately 115 lb weight savings while supporting 3,000+ horsepower combinations when paired with proper head retention and girdle systems.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolid Billet 6061-T6 Aluminum Construction:\u003c\/strong\u003e No sleeves entirely machined from one forging for ultimate rigidity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard Deck Height:\u003c\/strong\u003e 9.760\" (matches factory LSR block) direct replacement for 2024+ L5P\/LSR engines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtra-Thick Decks \u0026amp; Cylinder Walls:\u003c\/strong\u003e Minimum 0.750\" deck thickness and 0.500\"+ cylinder walls for extreme pressure handling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBore Capability:\u003c\/strong\u003e Ships finish-honed at 4.125\" bore (supports up to 4.250\" with machining).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReinforced Main Webbing:\u003c\/strong\u003e Accepts ARP 625+ or custom main studs with no modification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnlarged Oil Galleries \u0026amp; Improved Oiling:\u003c\/strong\u003e Optimized for high-volume pumps and roller cam bearings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e Approximately 95-100 lbs total (vs. ~215 lbs factory iron block).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUSA Made:\u003c\/strong\u003e 100% machined and inspected at Fleece Performance in Indiana.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eProduct Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003ePart number: FPE-LSR-FMJ-SD10X (Standard Deck 10X version for 2024+ LSR).\u003c\/li\u003e\n\u003cli\u003eDelivered fully machined: torque-plate honed, line-honed, decked, and bored to 4.125\".\u003c\/li\u003e\n\u003cli\u003eCam bore enlarged to 65mm for roller bearing cams.\u003c\/li\u003e\n\u003cli\u003eCompatible with all factory LSR oil pans, timing covers, and accessories.\u003c\/li\u003e\n\u003cli\u003eRequires billet main girdle and high-strength head studs\/fire-rings for extreme power levels.\u003c\/li\u003e\n\u003cli\u003eNo factory piston oil squirter provisions (blocked for competition use).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eRace engine builder assembly only not a drop-in part.\u003c\/li\u003e\n\u003cli\u003eDeck surface RA 15-20 finish for MLS or copper head gaskets.\u003c\/li\u003e\n\u003cli\u003eAll threads are cut (not cast) uses standard Duramax fasteners.\u003c\/li\u003e\n\u003cli\u003eNo core charge brand-new billet block.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eThis Part Fits\u003c\/h4\u003e\n\u003ctable border=\"1\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eYear\u003c\/th\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eEngine\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e2024-2026\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eSilverado 2500\/3500\u003c\/td\u003e\n\u003ctd\u003eLSR 6.6L Duramax\u003c\/td\u003e\n\u003ctd\u003eStandard Deck\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2024-2026\u003c\/td\u003e\n\u003ctd\u003eGMC\u003c\/td\u003e\n\u003ctd\u003eSierra 2500\/3500\u003c\/td\u003e\n\u003ctd\u003eLSR 6.6L Duramax\u003c\/td\u003e\n\u003ctd\u003eStandard Deck\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch4\u003eWhy Choose Fleece Performance?\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eProven leader in 3,000+ HP Duramax builds and record-holding trucks.\u003c\/li\u003e\n\u003cli\u003eEvery Freedom Series block individually machined and quality-checked in-house.\u003c\/li\u003e\n\u003cli\u003eTrusted by top diesel performance and pulling teams across the country.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What bore does it ship with?\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA:\u003c\/strong\u003e Finish-honed at 4.125\". Your engine builder can open it larger if needed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e Is a main girdle required?\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA:\u003c\/strong\u003e Strongly recommended over 1,500 hp required over 2,000 hp.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e Will factory LSR heads bolt right on?\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA:\u003c\/strong\u003e Yes, identical bolt pattern and dowel locations to OEM LSR block.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eShipping \u0026amp; Handling\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMethod:\u003c\/strong\u003e Freight truck only (wood crated and insured).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Weight:\u003c\/strong\u003e Approximately 180–200 lbs (block + protective crate).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrate Dimensions (approx):\u003c\/strong\u003e 42\" × 28\" × 28\" reinforced wood crate with foam.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailability:\u003c\/strong\u003e Ships same day or next if in stock otherwise this is a  Built to order – typical lead time 8–14 weeks.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Fleece Performance","offers":[{"title":"Default Title","offer_id":43764657094735,"sku":"FPEFPE-LSR-FMJ-SD10X","price":6850.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/fleece-lsr-billet-block-deck.png?v=1763479871","url":"https:\/\/www.blackopsautoworks.com\/products\/fleece-performance-gm-lsr-freedom-series-standard-deck-solid-aluminum-block","provider":"Black Ops Auto Works","version":"1.0","type":"link"}