12673475 GM Engine Block LS3

Review GM Blem Aluminum 6.2l Engine Block for LS3

The GM 12673475 2L LS3 Engine Block is a high-performance powerhouse designed for serious automotive enthusiasts seeking unparalleled engine efficiency and output. This engine block is an essential component of the iconic LS3 powertrain, utilizing advanced technology and engineering to deliver superior performance and longevity.

The 2L LS3 Engine Block embodies the latest in General Motors' engineering achievements, characterized by its compact and robust architecture. The block is constructed of aluminum alloy, resulting in reduced weight and increased heat dissipation capabilities. This lightweight material aids in the engine's overall power-to-weight ratio, contributing significantly to the vehicle's overall fuel economy and acceleration.

The LS3 engine block boasts a square bore design, offering optimal combination of Durametric injector compatibility, robustness, and thermal efficiency. This architecture bolsters the engine's ability to run larger, better-flowing cylinder heads and higher-compression pistons enhancing power output and torque.

Additionally, the 2L LS3 Engine Block showcases essential features such as four-bolt main caps, which provide increased strength and durability. The engine block also features cross-bolted mains, which add rigidity to the crankshaft for more efficient power delivery.

In terms of cooling performance, the LS3 engine block features a sump-style oil pan along with a large capacity oil cooler connection. These features ensure the engine remains at optimal operating temperature, even under the most demanding driving conditions.

A notable feature that differentiates the 2L LS3 Engine Block from many competitors is its dry-sump oil system compatibility. This option is crucial for high-performance applications, ensuring oil pressure remains consistent at high engine speeds, minimizing engine oil starvation, and optimizing engine performance.

In summary, the GM 12673475 2L LS3 Engine Block is an exceptional piece of automotive engineering. Its aluminum construction, advanced technologies, and robust designs make it the go-to choice for those seeking an engine block that provides unrivaled performance, efficiency, and engine longevity.

The GM 12673475 2L LS3 engine block is a high-performance aftermarket solution for those looking to build a high-powered engine. The LS3 engine block is known for its durability, reliability, and power. Here are some pros and cons of purchasing this engine block to help you make an informed decision:

1. High Power Output: The LS3 engine block is known for its impressive power output, producing up to 430 horsepower in stock form, making it an excellent choice for high-performance builds.

2. Durability: The LS3 engine block is built using cast iron, making it incredibly durable and resistant to wear and tear. Additionally, it features reinforced cylinder walls and other design enhancements to increase its durability.

3. Versatility: The LS3 engine block is compatible with a wide range of components and can be used to build various types of engines, from naturally-aspirated to supercharged or turbocharged.

4. Wide Availability: The LS3 engine block is a popular choice among engine builders, and parts are widely available from various suppliers, making it easier to source the components you need for your build.

5. Easy to Work With: The LS3 engine block has a large bore diameter and long stroke length, making it easier to work with for engine builders looking to create a custom engine design.

1. Cost: The GM 12673475 2L LS3 engine block is a premium aftermarket component and can be quite costly, making it a significant investment for engine builders.

2. Size: The LS3 engine block is larger than some standard engine blocks, which can make it more challenging to fit into certain applications or vehicles without modification.

3. Complexity: Building an engine using an LS3 engine block requires a high level of expertise and specialized knowledge, as well as a significant investment in specialized tools and equipment.

In conclusion, the GM 12673475 2L LS3 engine block offers impressive power output, durability, and versatility, making it an excellent choice for high-performance engine builds. However, the high cost and potential size constraints may limit its suitability for some applications, and building an engine using an LS3 engine block requires a significant investment in expertise, tools, and knowledge.

Based on the above information, I would recommend the GM 12673475 2L LS3 engine block to those with the necessary expertise and resources to build a high-performance engine and a budget that can accommodate the costs associated with using this top-tier engine block. For those looking for a more cost-effective or compatible engine block for their project, alternative options may be worth considering.

Details:

Block will still need machining. If you do not require lift gate service, please let me know upon purchasing. Decks were milled down to 7.840 .010 below normal spec of 7.850. Cylinders have not been finish honed.

It also has not been honed. Blem - Gm 12673475 aluminum 6.2l LS3 engine block. This will not affect the price of shipping. See photos for flaw circled in black marker.

Curbside delivery to residential area is possible. Casting flaw on passenger side deck by #1 cylinder. Due to this, buyer will want run a thick head gasket such as cosmetic 5489-062.

specifications engineblocksam:

• for models: Ls3
• brand: Gm
• mpn: 12673475
• type: Engine Block
• material: Aluminum

seller engineblocksam:

• city: kearney, nebraska
• rating: 100.0%
• # reviews: 515

payments engineblocksam:

• credit card: diners-club
• other
• wallet: paypal

returns engineblocksam:

• policy: no returns

offer engineblocksam:

• price: $2999.00
• item condition: Used
• availability: in stock
• options: ship-to-home
• started: december 6, 2024
• sold #: 25
• best offers: true
• in stock #: 4

shipping engineblocksam:

• class: freight
• type: fixed
• service: flat rate freight

general engineblocksam:

• category: Auto Parts > Car Truck Accessories > Engines > Blocks