Multiple U.S. Warehouse LocationsBroken ApexFree shipping on qualified orders over $100*
The Edelbrock RHS LS aluminum race block is a high-capacity GM LS block engineered from A357-T6 alloy with press-in cast iron sleeves and a 9.240" standard deck option with 4.120" bore (requires final hone). It accepts large strokes—provisions for up to 4.6"—features a six head-bolt design with full water jacketing, raised cam centerline, enlarged valley windows and precision castings verified by CT scan for consistency.
Edelbrock RHS LS Aluminum Race Block (Ready to Hone) 9.250in Standard Deck - 4.120in Bore
