{"product_id":"atomic-barra-cast-block-pre-production","title":"Atomic Barra Cast Block | PRE-PRODUCTION","description":"\u003cdiv class=\"atomic-header\"\u003e\n\u003ch2 class=\"atomic-title\"\u003e\n\u003cspan\u003e**FIRST ORDERS OPEN EST. LATE APRIL - WE ARE NOT ACCEPTING CUSTOMER DEPOSITS UNTIL THEN.\u003cbr\u003e\u003cbr\u003eTHIS PAGE IS LIVE TO GET OUR CUSTOMERS UP TO SPEED ON SPECS AND PRICING ESTIMATES**\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eAtomic H260 Cast Iron Barra Block\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp class=\"atomic-subtitle\"\u003eThe Industry-First Aftermarket Barra Casting\u003cbr\u003e\u003cem\u003ePlease note: Information subject to update as production finalises.\u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"Engine block on a stand with 'Atomic Performance' logo in the background\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0587\/5548\/1713\/files\/Atomic_Barra_RTM_Block_7.jpg?v=1776257130\" width=\"328\" height=\"666\"\u003e\u003cbr\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"atomic-section\"\u003e\n\u003cdiv class=\"atomic-grid\"\u003e\n\u003cdiv\u003e\n\u003ch2\u003eThe New Foundation\u003c\/h2\u003e\n\u003cp\u003eFor decades, the limit of the Barra has been the block itself. While the factory design is good, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ecastings are VERY inconsistent\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ewith\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003evariation in wall thickness\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eof up to 2mm in a single block 1000HP+ builds start to face\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ecylinder stress and eventually cracking\u003c\/strong\u003e. Whilst this was the main thing we wanted to address, there are dozens of other smaller features that bring this block up to the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAtomic standard\u003c\/strong\u003e. Based on approximately\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1000 Barra builds\u003c\/strong\u003e, hundreds of dissassemblies, failures and breakages, and long living well put together recipes, we've made this block with a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003edeep knowledge\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eof what makes a Barra roar\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e💡 DID YOU KNOW?\u003c\/strong\u003e\n\u003cp\u003e\u003cstrong\u003eThis block uses \"Murray's Magic Dust\".\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe proprietary\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eH260 Base Iron\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eblend offers a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e+40% tensile strength increase\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eover OEM grey iron. Stronger material combined with a 50% increase in min. cylinder wall thickness vs Factory, plus added ribbing and support structures, make for a far stronger and more stable block. Better ring seal, better bearing stability, better head gasket seal.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2\u003e\n\u003cbr\u003e\u003cbr\u003eTHE ATOMIC OPTION\u003c\/h2\u003e\n\u003cp\u003eThe Atomic Cast Block is a direct OEM+ replacement that solves these issues. With a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eSiamese Bore\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003edesign for rigidity,\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eStepped Cylinder Walls\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e(min 5.5mm thickness), and a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eThicker Deck\u003c\/strong\u003e, it is the ultimate foundation for everything from a reliable street car to a 2500HP+ drag weapon. If you're looking for a 1500-2000hp street car that doesn't overheat and need constant refreshes, our full water wet deck block is the foundation for your build.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cbr\u003e\n\u003cdiv class=\"img-caption\"\u003eSiamese Bores. H260 Iron. 2500HP+ Capable.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"atomic-section\"\u003e\n\u003ch2\u003e\u003cspan\u003eEngineering Highlights\u003c\/span\u003e\u003c\/h2\u003e\n\u003cdiv class=\"atomic-card-grid\"\u003e\n\u003cdiv class=\"atomic-card\"\u003e\n\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0587\/5548\/1713\/files\/Atomic_Barra_RTM_Block_3.jpg?v=1776257056\" width=\"308\" height=\"666\"\u003e\u003cbr\u003e\u003cbr\u003e\n\u003ch3\u003eH260 \"Magic\" Iron\u003c\/h3\u003e\n\u003cp\u003eSpecial blend H260 base iron with proprietary additives. Offers\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e+40% tensile strength\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003evs OEM for extreme cylinder pressure containment,\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ereducing twisting\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eduring launching and high torque scenarios.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"atomic-card\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0587\/5548\/1713\/files\/20260122_123756.jpg?v=1769049482\" alt=\"Siamese Bore Design\" width=\"315\" height=\"420\"\u003e\n\u003ch3\u003eSiamese Bores\u003c\/h3\u003e\n\u003cp\u003eCylinders are connected (\u003cstrong\u003eSiamese\u003c\/strong\u003e) rather than having a gap, massively increasing rigidity. Allows for\u003cstrong\u003e\u003cspan\u003e \u003c\/span\u003econsistent ring seal\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eat high boost.\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e60% increase in bore thickness over factory\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"atomic-card\"\u003e\n\u003cvideo controls=\"controls\" width=\"1001\" height=\"563\"\u003e\u003c\/video\u003e\n\u003ch3\u003eCooling System\u003c\/h3\u003e\n\u003cp\u003eFeatures a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003erevised pump impeller cavity\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ewith added flow vane to assist coolant flow at idle. Internal cooling ribs support bores and increase surface area. \"Grout Filled\" and \"\u003cstrong\u003edry deck\u003c\/strong\u003e\" options available.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"atomic-card\"\u003e\n\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0587\/5548\/1713\/files\/Atomic_Barra_RTM_Block_1.jpg?v=1776257056\" width=\"348\" height=\"684\"\u003e\u003cbr\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0587\/5548\/1713\/files\/IMG_7153.jpg?v=1769769424\" alt=\"\"\u003e\u003cbr\u003e\n\u003ch3\u003ePriority Oiling\u003c\/h3\u003e\n\u003cp\u003eRevised oil gallery size and routing. Additional\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eturbo feed outlet on exhaust side\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eplus feed\/sensor ports on intake side.\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eDual dipstick ready\u003c\/strong\u003e. Revised oil filter boss for easy relocation.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cimg height=\"507\" width=\"338\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0587\/5548\/1713\/files\/Atomic_Barra_RTM_Block_6.jpg?v=1776257057\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"atomic-card\"\u003e\n\u003cbr\u003e\n\u003ch3\u003eHigh Rod Clearance\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eBore skirts are pre-relieved\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efor increased stroke and aluminium rods. Accepts all OEM brackets, heads, and accessories.\u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"close up of engine block\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0587\/5548\/1713\/files\/atomic_engine_block_1.jpg?v=1772615630\" width=\"321\" height=\"481\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"atomic-card\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0587\/5548\/1713\/files\/IMG_7085.jpg?v=1769606485\" alt=\"\"\u003e\n\u003ch3\u003eBillet Main Caps\u003c\/h3\u003e\n\u003cp\u003eDesigned to support Standard Style or Atomic Wide-Style\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e4140 Billet Steel caps\u003c\/strong\u003e. Threaded for M12 or M14 tool steel studs to ensure\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ezero cap walk\u003c\/strong\u003e. Precision engineered for\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003emaximum rigidity\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"atomic-section\"\u003e\n\u003cdiv class=\"atomic-grid\"\u003e\n\u003cdiv\u003e\n\u003cimg class=\"atomic-img\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0587\/5548\/1713\/files\/atomic_barra_block_drawing.png?v=1769050992\" alt=\"Technical Drawing\"\u003e\n\u003cdiv class=\"img-caption\"\u003e\n\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable class=\"spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStandard Bore Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e92.25mm (Factory Size)\u003cbr\u003e92.30mm (Atomic STD)\u003cbr\u003e\u003cem\u003eOther sizes specify at purchase - no extra cost\u003c\/em\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBore Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMin: 85.0mm (12.5mm thickness)\u003cbr\u003eRec: 92.3mm (5.5mm thickness)\u003cbr\u003eMax: 95.0mm (3.5mm thickness)*\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMin Wall Thickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5.5mm @ Skirt Base (vs 3.5mm OEM)\u003cbr\u003eCustom up to 12mm - Contact Atomic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDeck Height\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStandard OEM Height\u003cbr\u003eCustom - Contact Atomic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDeck Thickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e15mm (Massive increase for rigidity)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePan Rail Thickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e22mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBare Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e66kg (Factory = 63kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMain Stud Options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eM12x1.5 (Standard) or M14x1.5 (Extreme)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"atomic-section\"\u003e\n\u003ch6\u003e\n\u003cbr\u003e*100mm is possible in theory with 3.6mm between cylinders - standard thickness. \u003c\/h6\u003e\n\u003c\/div\u003e","brand":"Atomic","offers":[{"title":"12mm \/ RTM Casting - Ready to machine (Bore + hone) \/ Full water jackets | Wet Deck","offer_id":46876101247134,"sku":null,"price":15298.83,"currency_code":"AUD","in_stock":true},{"title":"12mm \/ RTM Casting - Ready to machine (Bore + hone) \/ Full water jackets | Dry Deck","offer_id":46876101279902,"sku":null,"price":15298.83,"currency_code":"AUD","in_stock":true},{"title":"12mm \/ RTM Casting - Ready to machine (Bore + hone) \/ Top fill cast | Dry Deck","offer_id":46876101312670,"sku":null,"price":15298.83,"currency_code":"AUD","in_stock":true},{"title":"12mm \/ RTA Casting - Ready to Assemble \/ Full water jackets | Wet Deck","offer_id":46876101345438,"sku":null,"price":16829.74,"currency_code":"AUD","in_stock":true},{"title":"12mm \/ RTA Casting - Ready to Assemble \/ Full water jackets | Dry Deck","offer_id":46876101378206,"sku":null,"price":16829.74,"currency_code":"AUD","in_stock":true},{"title":"12mm \/ RTA Casting - 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Ready to machine (Bore + hone) \/ Top fill cast | Dry Deck","offer_id":46876101607582,"sku":null,"price":15298.83,"currency_code":"AUD","in_stock":true},{"title":"14mm \/ RTA Casting - Ready to Assemble \/ Full water jackets | Wet Deck","offer_id":46876101640350,"sku":null,"price":16829.74,"currency_code":"AUD","in_stock":true},{"title":"14mm \/ RTA Casting - Ready to Assemble \/ Full water jackets | Dry Deck","offer_id":46876101673118,"sku":null,"price":16829.74,"currency_code":"AUD","in_stock":true},{"title":"14mm \/ RTA Casting - Ready to Assemble \/ Top fill cast | Dry Deck","offer_id":46876101705886,"sku":null,"price":16829.74,"currency_code":"AUD","in_stock":true},{"title":"14mm \/ Custom RTM Casting - Minimum charge \/ Full water jackets | Wet Deck","offer_id":46876101738654,"sku":null,"price":17339.07,"currency_code":"AUD","in_stock":true},{"title":"14mm \/ Custom RTM Casting - Minimum charge \/ Full water jackets | Dry Deck","offer_id":46876101771422,"sku":null,"price":17339.07,"currency_code":"AUD","in_stock":true},{"title":"14mm \/ Custom RTM Casting - Minimum charge \/ Top fill cast | Dry Deck","offer_id":46876101804190,"sku":null,"price":17339.07,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0323\/6482\/2661\/files\/Atomic_Barra_RTM_Block_2_2000x_a6aeeae9-f862-41c7-abc4-c3efe4f10e02.jpg?v=1779777622","url":"https:\/\/www.performanceheaven.com.au\/products\/atomic-barra-cast-block-pre-production","provider":"performanceheaven","version":"1.0","type":"link"}