12551364 GENERAL MOTORS Engine Block Gm

Review GENERAL MOTORS Gm 6.0 Engine Block Lq9 Lq4 Gen for GM

The General Motors 12551364 gm 6.0 engine block, also known as the LQ9 and LQ4 engine, is a powerful and robust powertrain component designed for heavy-duty applications. This engine block is a key foundation of the 6.0-liter V8 engine family, which is renowned for its durability and performance in various GM vehicles, including pickups and SUVs.

The LQ9/LQ4 engine block is made of high-strength cast iron, ensuring superior structural integrity and resistance to wear and tear. It features a rectangular shape with a bore center measurement of 4.00 inches and a stroke length of 3.58 inches. The engine block is designed to accommodate six cylinders arranged in a V-configuration, with a total displacement of 6.0 liters.

One of the most notable features of the 12551364 gm 6.0 engine block is its compacted graphite iron (CGI) construction. CGI technology provides increased strength and durability compared to traditional gray iron engine blocks. This translates to better heat dissipation, reduced weight, and improved engine performance.

* Four-bolt main caps for enhanced rigidity and improved torque capacity

* Deep-skirt design that enhances strength and minimizes vibration

* Precision-machined surfaces that ensure a proper fit and finish when assembling the engine

* Thick cylinder walls that provide excellent cylinder pressure containment

* Four-bolt cylinder heads that provide superior sealing and improved engine performance

* Integrated oil galleries and water jackets for efficient cooling and lubrication

* Deep-sump oil pan design that provides ample oil capacity and excellent oiling coverage

The 12551364 gm 6.0 engine block is an essential component for those seeking to build a high-performance or heavy-duty engine. Its combination of durability, strength, and advanced engineering makes it an excellent choice for those who demand the best from their powertrain components. Whether you're building an engine for a high-performance pickup, a racecar, or a heavy-duty work truck, the LQ9/LQ4 engine block is an investment that will pay off in the long run.

In summary, the 12551364 gm 6.0 engine block is a high-strength, compacted graphite iron engine block designed for heavy-duty applications. It features a V8 configuration with a displacement of 6.0 liters and a bore center measurement of 4.00 inches. Its advanced engineering, including a four-bolt main cap design, deep-skirt construction, and integrated oil galleries, make it an ideal choice for those seeking to build a powerful and durable engine.

The GM 6.0 LQ9/LQ4 engine block, with the model number 12551364, is a popular choice for heavy-duty applications due to its durability and power. Here are some pros and cons of buying this engine block:

1. High Power Output: This engine block is capable of producing a significant amount of power, making it an excellent choice for high-performance applications.

2. Durability: The LQ9/LQ4 engine block is known for its robustness and longevity. It can handle heavy loads and tough working conditions, making it suitable for commercial use.

3. Availability: These engine blocks are widely available on the aftermarket, making them relatively easy to find and purchase.

4. Versatility: The LQ9/LQ4 engine block can be used in various applications, including trucks, buses, and industrial equipment.

1. Size and Weight: This engine block is larger and heavier than some other options, which can make installation more challenging and increase transportation costs.

2. Complexity: The LQ9/LQ4 engine block is a complex machine with many moving parts. This complexity can lead to higher maintenance costs and more time spent on repairs.

3. Fuel Consumption: Due to its size and power output, the LQ9/LQ4 engine block consumes more fuel than some smaller engines.

4. Cost: The price of a new LQ9/LQ4 engine block can be quite high. However, used blocks are available at more affordable prices.

The GM 6.0 LQ9/LQ4 engine block, with the model number 12551364, is a powerful and durable engine block suitable for heavy-duty applications. However, it comes with some drawbacks, such as its size, weight, complexity, and fuel consumption. Ultimately, the decision to purchase this engine block depends on the specific requirements of the application and the budget available. If the power output and durability are priorities, then the LQ9/LQ4 engine block may be an excellent choice. Otherwise, it may be worth considering other options that offer a better balance of power, size, and cost.

If you are in the market for a powerful and durable engine block for heavy-duty applications, then the GM 6.0 LQ9/LQ4 engine block is definitely worth considering. However, before making a purchase, it's important to weigh the pros and cons carefully and consider other options that may offer a better balance of power, size, and cost. Additionally, it's recommended to purchase a reliable and trustworthy source for the engine block to ensure its quality and longevity.

Details:

From 2002 sierra 2500. Can only ship to west zone. Engine was running and did not have any internal failures. Sold as a core for being bored/machined.

Approximately 101.63mm bore measured with average/low quality calipers. Contact for a shipping quote before purchasing. Has minor rust in cylinders from sitting. 12551364 cast number.

Oem 6.0 engine block.

specifications engineblocksam:

• for makes: Gm
• brand: General Motors
• mpn: 12551364
• type: Engine Block
• material: Cast Iron
• country of origin: United States

payments engineblocksam:

• other
• wallet: google-pay
• credit card: mastercard

returns engineblocksam:

• policy: no returns

offer engineblocksam:

• prices: $495.00–$1599.95
• item condition:
  • Used
  • Remanufactured
  • New
• sold #: 8
• options: ship-to-home
• availability: in stock
• in stock #: 5
• started: may 13, 2026

seller engineblocksam:

• city: powell, wyoming
• # reviews: 6153
• rating: 99.6%

general engineblocksam:

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

shipping engineblocksam: