{"product_id":"fleece-performance-gm-ltr-freedom-series-standard-deck-wet-aluminum-block","title":"Fleece Performance GM LTR Freedom Series Standard Deck Wet Aluminum Block","description":"\u003cdiv\u003e\n\u003cstrong\u003eSKU:\u003c\/strong\u003e \u003cspan itemprop=\"sku\"\u003eFPE-LTR-SD10X\u003c\/span\u003e   |   \u003cstrong\u003eUPC:\u003c\/strong\u003e 732777409792\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch4\u003e\u003cstrong\u003eFleece Performance Freedom Series Wet Aluminum Billet Block - GM LTR Standard Deck (10X) with Ductile Iron Sleeves\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe Fleece Performance Freedom Series wet-sleeve aluminum block gives LTR\/L5P builders a durable, repairable platform capable of 2,500+ horsepower while saving over 100 lbs compared to the factory cast-iron block. Machined from a massive 6061-T6 aluminum forging and fitted with high-strength ductile iron wet sleeves, this standard-deck block combines the heat dissipation and weight advantages of aluminum with the proven durability and cylinder sealing of a sleeved design ideal for daily-driven high-performance trucks or competition engines that still need long-term reliability.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWet Ductile Iron Sleeves:\u003c\/strong\u003e Centrifugally cast sleeves support extreme cylinder pressure and allow easy replacement if ever needed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard Deck Height:\u003c\/strong\u003e 9.760\" direct drop-in for 2020+ L5P\/LTR Duramax engines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThick Decks \u0026amp; Main Webbing:\u003c\/strong\u003e 0.750\" minimum deck thickness and heavily reinforced mains.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBore Size:\u003c\/strong\u003e Ships finish-honed at 4.125\" (supports up to 4.250\" overbore).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnlarged Oil Galleries:\u003c\/strong\u003e Improved lubrication for high-volume pumps and big roller cams.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCam Bore:\u003c\/strong\u003e Machined to 65mm for roller bearing camshafts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e Approximately 110-115 lbs (100+ lbs lighter than OEM iron block).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e100% USA Machined:\u003c\/strong\u003e Produced 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-LTR-SD10X (wet-sleeve version).\u003c\/li\u003e\n\u003cli\u003eBlock arrives fully machined: torque-plate honed, align-honed, decked, and ready for assembly.\u003c\/li\u003e\n\u003cli\u003eCompatible with factory LTR oil pans, timing covers, valley cover, and accessories.\u003c\/li\u003e\n\u003cli\u003eRetains piston oil squirter provisions (can be blocked if desired).\u003c\/li\u003e\n\u003cli\u003eAccepts ARP main studs and all standard Duramax fasteners.\u003c\/li\u003e\n\u003cli\u003eDesigned for street\/strip and sled-pulling trucks that require serviceability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eProfessional engine builder assembly required.\u003c\/li\u003e\n\u003cli\u003eDeck surface RA 15-20 works with MLS or copper head gaskets.\u003c\/li\u003e\n\u003cli\u003eRecommended with billet main girdle above 1,800 hp.\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\u003e2020-2025\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eSilverado 2500\/3500\u003c\/td\u003e\n\u003ctd\u003eL5P \/ LTR 6.6L Duramax\u003c\/td\u003e\n\u003ctd\u003eStandard Deck Wet Sleeve\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2020-2025\u003c\/td\u003e\n\u003ctd\u003eGMC\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eSierra 2500\/3500\u003c\/td\u003e\n\u003ctd\u003eL5P \/ LTR 6.6L Duramax\u003c\/td\u003e\n\u003ctd\u003eStandard Deck Wet Sleeve\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\u003eTrusted by top Duramax racers and daily drivers for reliable high-horsepower components.\u003c\/li\u003e\n\u003cli\u003eEvery Freedom Series block is individually CNC-machined and quality-checked in-house.\u003c\/li\u003e\n\u003cli\u003eOffers the perfect balance of weight savings, heat transfer, and long-term durability.\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 is the difference between this wet-sleeve block and the solid version?\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA:\u003c\/strong\u003e The wet-sleeve block uses replaceable ductile iron liners for easier repair and slightly higher weight, making it better suited for street or heavy-towing trucks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What bore does it come with?\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA:\u003c\/strong\u003e Finish-honed at 4.125\" ready for standard or stroker pistons.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e Do factory LTR heads bolt on?\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA:\u003c\/strong\u003e Yes, identical bolt pattern, dowels, and coolant passages to the OEM 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, insured).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Weight:\u003c\/strong\u003e Approximately 200–220 lbs (block + 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 Typically ships same day or next if in stock otherwise these are 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":43764657258575,"sku":"FPEFPE-LTR-SD10X","price":6750.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/fleece-ltr-wet-sleeve-aluminum-block-front.png?v=1763480070","url":"https:\/\/www.blackopsautoworks.com\/products\/fleece-performance-gm-ltr-freedom-series-standard-deck-wet-aluminum-block","provider":"Black Ops Auto Works","version":"1.0","type":"link"}