{"product_id":"edelbrock-engine-block-54903u-904","title":"Edelbrock RHS LS Block 54903U-904","description":"Edelbrock RHS LS Block 54903U-904 is a high-performance aluminum LS engine block built for serious engine builds that need more strength and capability than a standard production block. It is a foundation component for performance assembly work, not a routine service replacement.\u003cbr\u003e\u003cbr\u003eAluminum construction, performance grade type, 9.240 inch deck height, 4.125 inch cylinder bore diameter, .904 inch lifter bore diameter, and a raised cam centerline intended to allow larger stroke. Those details make this block relevant for builders planning higher-output LS combinations where machining, rotating assembly clearance, and block architecture matter from the start. The block is best approached as a precision engine-building component, with machining and assembly decisions planned around the final combination.","brand":"Edelbrock","offers":[{"title":"Default Title","offer_id":58173511926144,"sku":"54903U-904","price":6904.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0982\/9390\/7840\/files\/RHS_54903U-904_BLOCK__20Standard_20Deck_200.904_V1.jpg?v=1779998534","url":"https:\/\/modridge.com\/products\/edelbrock-engine-block-54903u-904","provider":"Modridge","version":"1.0","type":"link"}