{"title":"Racing Head Service (RHS)","description":null,"products":[{"product_id":"racing-head-service-rhs-54903u","title":"Racing Head Service (RHS) 54903U - LS Aluminum Race Block Standard Deck 4.125 Bore","description":"\u003cp\u003eRacing Head Service (RHS) 54903U - LS Aluminum Race Block Standard Deck 4.125 Bore\u003c\/p\u003e\u003cp\u003eEngine - Bare Block - 4.125 in Bore - 9.250 Deck - Standard Main - 6-Bolt Mains - 1-Piece Seal - 6-Bolt Head - Aluminum - Natural - GM LS-Series - Each\u003c\/p\u003e\u003cp\u003eThis block has a 9.240 deck height with a 4.125 bore and a 5.87 cylinder sleeve length. Cylinder walls are Siamese cast with press-in cast iron sleeves. 12AN feeds for dry sumps. Aircraft-quality A357-T6 aluminum. 6-Head Bolt Design.\u003c\/p\u003e\u003cp\u003eIn recent years, LS engine technology has revolutionized the GM performance aftermarket. Gen IV engines have set a new standard for factory horsepower and torque. To meet the growing demand of today?s high performance engine builders and racing enthusiasts, engineers at RHSesigned an aluminum LS engine block for radical street and all-out racing applications.\u003c\/p\u003e\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eCylinder Bore Diameter\u003c\/strong\u003e: \u003cspan\u003e4.125\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eCylinder Quantity\u003c\/strong\u003e: \u003cspan\u003e8\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eDeck Height\u003c\/strong\u003e: \u003cspan\u003e9.24\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMain Bearing Cap Bolt Quantity\u003c\/strong\u003e: \u003cspan\u003e6\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: \u003cspan\u003eAluminum\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eGrade Type\u003c\/strong\u003e: \u003cspan\u003ePerformance\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Racing Head Service (RHS)","offers":[{"title":"Default Title","offer_id":47348811432074,"sku":"DXKK-54903U","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/0619\/2778\/files\/0_54903u_normalized.jpg?v=1776793872"},{"product_id":"racing-head-service-rhs-549202-1","title":"Racing Head Service (RHS) 549202-1 - RHS LS Race Block Cam Bearing for 55mm Camshaft Journal","description":"\u003cp\u003eRacing Head Service (RHS) 549202-1 - RHS LS Race Block Cam Bearing for 55mm Camshaft Journal\u003c\/p\u003e\u003cp\u003eCamshaft Bearing - Standard Journal - RHS LS Block - GM LS-Series - Each\u003c\/p\u003e\u003cp\u003eThis cam bearing is designed to fit into the 68mm cam bore of the RHS Race block and allow for the installation of a 55mm camshaft journal. The camshaft tunnel of the RHSlock is 688mm which will accommodate a bigger camshaft journal.\u003c\/p\u003e\u003cp\u003eThese parts are included with your purchase of an RHS Race Block but are also available for purchase separately.\u003c\/p\u003e\u003cdiv\u003e\u003c\/div\u003e","brand":"Racing Head Service (RHS)","offers":[{"title":"Default Title","offer_id":47348811399306,"sku":"DXKK-549202-1","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/0619\/2778\/files\/0_rhs549202-1_normalized.jpg?v=1776793872"},{"product_id":"racing-head-service-rhs-11903-dominator-flange-efi-single-plane-intake-manifold-for-chevrolet-big-block","title":"Racing Head Service (RHS) 11903 - Dominator Flange EFI Single Plane Intake Manifold for Chevrolet Big Block","description":"\u003cp\u003eRacing Head Service (RHS) 11903 - Dominator Flange EFI Single Plane Intake Manifold for Chevrolet Big Block\u003c\/p\u003e\u003cp\u003eIntake Manifold - Dominator Flange - Single Plane - Rectangle Port - Aluminum - Natural - Big Block Chevy - Kit\u003c\/p\u003e\u003cp\u003eOffering excellent performance for drag race and marine Chevrolet Big Blocks, this EFI manifold delivers excellent flow, throttle response and torque. The RHS 24 Degree Manifold provides a distinct advantage over the competition.\u003c\/p\u003e\u003cp\u003eThese manifolds are designed for maximum airflow and power with a 4500 Dominator-style carburetor flange. Engineered to fit most 24-degree style race cylinder heads, RHS took additional efforts to ensure excellent port matching when paired with RHS Big Block Chevrolet cylinder heads. These manifolds are available in both carb and EFI versions and offer excellent performance for drag racing and marine applications.\r\nFeaturing a single-plane design, they utilize individual runner dividers for excellent throttle response and exceptional torque. Available for both short and tall deck blocks, all versions utilize a standard BBC distributor – there is no need for a slip collar distributor or special distributor for tall deck engines. They feature auxiliary water ports, an integral water crossover and dual distributor hold-down pads. Ports for water lines are also provided at all four corners. RHS also teamed up with sister brand FAST to create a revolutionary EFI version of the manifold that features port angle optimized injector bung mounting and machining, which angles the injectors to point directly at the valve. In addition, the EFI manifolds feature integral sensor mounting points to improving function, fitment and packaging.\u003c\/p\u003e\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eBasic Operating RPM Range\u003c\/strong\u003e: \u003cspan\u003e3000-8000\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eBolt Centerline to Port Floor\u003c\/strong\u003e: \u003cspan\u003e1.15\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eBolt Hole Centerline to Port Roof\u003c\/strong\u003e: \u003cspan\u003e1.34\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eCarb Angle\u003c\/strong\u003e: \u003cspan\u003e0\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eCarb Height\u003c\/strong\u003e: \u003cspan\u003e7.46\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eCarburetor Mounting Pattern\u003c\/strong\u003e: \u003cspan\u003e4500\/Dominator\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eCenter Maximum Height\u003c\/strong\u003e: \u003cspan\u003e7.46\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eCNC Ported\u003c\/strong\u003e: \u003cspan\u003eNo\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eColor\u003c\/strong\u003e: \u003cspan\u003eNatural\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eEGR?\u003c\/strong\u003e: \u003cspan\u003eNo\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: \u003cspan\u003eNatural\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eFront Maximum Height\u003c\/strong\u003e: \u003cspan\u003e2.81\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eGasket Or Seal Included\u003c\/strong\u003e: \u003cspan\u003eNo\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eGrade Type\u003c\/strong\u003e: \u003cspan\u003ePerformance\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eIncludes Fuel Rails?\u003c\/strong\u003e: \u003cspan\u003eNo\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eInjectors Included?\u003c\/strong\u003e: \u003cspan\u003eNo\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eIntake Port Height\u003c\/strong\u003e: \u003cspan\u003e2.49\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eIntake Port Width\u003c\/strong\u003e: \u003cspan\u003e1.71\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: \u003cspan\u003eAluminum\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMounting Hole Diameter\u003c\/strong\u003e: \u003cspan\u003eSlotted 7\/16\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMounting Hole Quantity\u003c\/strong\u003e: \u003cspan\u003e12\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eMultiport EFI Ready?\u003c\/strong\u003e: \u003cspan\u003eYes\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eNitrous Bosses?\u003c\/strong\u003e: \u003cspan\u003eNo\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003ePlenum Volume (including Runners)\u003c\/strong\u003e: \u003cspan\u003e268\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eRear Maximum Height\u003c\/strong\u003e: \u003cspan\u003e2.36\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eSingle Or Dual Plane Type\u003c\/strong\u003e: \u003cspan\u003eSingle\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eThrottle Body Included?\u003c\/strong\u003e: \u003cspan\u003eNo\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Racing Head Service (RHS)","offers":[{"title":"Default Title","offer_id":47355312341130,"sku":"DXKK-11903","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/0619\/2778\/files\/0_rhs11903_normalized.jpg?v=1776793872"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0706\/0619\/2778\/collections\/rhslogo.jpg?v=1763521183","url":"https:\/\/www.onlyinstock.com\/collections\/racing-head-service-rhs.oembed","provider":"Only In Stock","version":"1.0","type":"link"}