What are the main advantages of an aluminum engine block over a cast iron one?

Aluminum blocks are significantly lighter than cast iron, which can improve vehicle handling and performance. They also tend to dissipate heat more effectively, which is beneficial in high-performance applications.

What does 'standard deck height' mean for this block?

A standard deck height means the distance from the crankshaft centerline to the cylinder head mounting surface is the same as most factory LS blocks. This ensures compatibility with a wide range of LS crankshafts, connecting rods, and cylinder heads without requiring custom length components.

What supporting modifications are typically needed when installing this block?

Given this is a high-performance component, you'll need to ensure your cylinder heads, camshaft, fuel system, and exhaust are capable of supporting the power levels this block is designed for. Professional tuning is also essential.

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Specifications

Brand: Fleece Performance
Part #: FPE-LSR-FMJ-SD10X
UPC: 732777409761

Fleece Performance GM LSR Freedom Series Standard Deck Solid Aluminum Block

Name: Fleece Performance GM LSR Freedom Series Standard Deck Solid Aluminum Block
Brand: Fleece Performance
SKU: fleece-performance-fleece-performance-gm-lsr-freedom-series-standard-deck-solid--t14-940739
Price: 7422.72 USD
Availability: InStock

$7422.72

Only 1 left in stock

Fleece Performance GM LSR Freedom Series Standard Deck Solid Aluminum Block.

Key Features

Fits GM LS-based engines.
Standard deck height for broad compatibility with LS crankshafts and connecting rods.
Constructed from a solid block of aerospace-grade aluminum for reduced weight and improved thermal properties.
Robust design engineered to withstand extreme cylinder pressures and temperatures.
Solid block construction eliminates internal water jackets for enhanced structural integrity.
Fleece Performance part number FPE-LSR-FMJ-SD10X.

This engine block is designed for GM LS-based engine platforms. Please consult with a performance engine builder to confirm compatibility with your specific vehicle and build requirements.

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About this part

Product Details

If you're building a serious performance GM LS-based engine, starting with a solid foundation is key. This Fleece Performance GM LSR Freedom Series Standard Deck Solid Aluminum Block is designed for those who demand the absolute best in strength and reliability for their high-horsepower builds. It's a well-built aluminum block that replaces your factory cast iron block, offering significant weight savings and superior thermal management for extreme applications.

Crafted from a solid block of aerospace-grade aluminum, this block is machined to exacting tolerances. The standard deck height means it's compatible with a wide range of LS crankshafts and connecting rods, making it a versatile choice for custom engine builds. Its robust construction is intended to handle extreme cylinder pressures and temperatures that push the limits of production blocks. The solid design eliminates the need for water jackets within the block itself, allowing for a more uniform and stronger structure capable of supporting massive power outputs.

This block is a substantial upgrade for any performance engine project. It's important to note that this block is not CARB approved and cannot be shipped to California. Due to the specialized nature of this component, professional installation and expert tuning are highly recommended to ensure optimal performance and longevity. You'll want to ensure all supporting components, such as cylinder heads, camshafts, and fuel systems, are matched to the capabilities of this high-performance block.