Specifications
- Brand
- Edelbrock
- Part #
- 54903U

Edelbrock RHS LS Aluminum Race Block (Ready to Hone) 9.250in Standard Deck - 4.120in Bore
$7808.77
Edelbrock RHS LS Aluminum Race Block (Ready to Hone) 9.250in Standard Deck - 4.120in Bore
Key Features
- This product is an Edelbrock RHS LS Aluminum Race Block, ready to hone.
- Features a standard deck height of 9.250 inches.
- Designed with a 4.120 inch bore, suitable for many LS engine builds.
- Constructed from strong aluminum for a weight advantage over cast iron.
- The block is sold as a bare unit, requiring all internal engine components to be sourced separately.
- Not CARB approved and cannot be shipped to California.
⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more
Product Details
This Edelbrock RHS LS Aluminum Race Block is a well-built foundation for your high-performance LS engine build. You get the bare block itself, ready for final machining to your exact specifications. It's designed for standard deck height applications with a 9.250-inch deck and a 4.120-inch bore, which is a common starting point for many popular LS stroker combinations.
Crafted from strong aluminum, this block offers a significant weight advantage over cast iron alternatives, which can be crucial for optimizing your vehicle's power-to-weight ratio. The RHS block is designed with robust internal structures to handle the stresses of racing and high-output street applications. It comes ready to be honed to your specific piston and ring setup, allowing for precise tolerances and optimal sealing. This ensures that when you assemble your engine, you're starting with the best possible foundation for reliability and performance.
Because this block is sold as a bare unit, you'll need to source all the necessary internal components like crankshaft, connecting rods, pistons, camshaft, lifters, and oiling system parts. It's also important to note that this block is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's detailed specifications and recommended build procedures for your specific application.
Specifications
- Brand
- Edelbrock
- Manufacturer Part #
- 54903U
Frequently Asked Questions
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Edelbrock RHS LS Aluminum Race Block (Ready to Hone) 9.250in Standard Deck - 4.120in Bore
