330817 CHEVROLET Engine Block 400

Review CHEVROLET Sbc Engine Block Ready To Build for 400

The Chevrolet 330817 400 engine block is a powerful and robust component designed for use in heavy-duty applications. This engine block is part of the iconic 400 cubic inch V8 engine family, which was once a staple in full-size Chevrolet vehicles and performance applications.

This engine block is made of cast iron, a material known for its exceptional strength and durability. The cast iron construction allows the engine block to withstand the high compressive loads and heat generated during engine operation. The block features a split-type design, which facilitates easier engine assembly and disassembly.

The Chevrolet 330817 400 engine block has a bore size of 4.060 inches and a stroke length of 3.750 inches, resulting in a total displacement of 400 cubic inches. The block has a deck height of 9.215 inches, which provides ample clearance for large-size pistons and rings.

The engine block also features a cross-bolted main bearing cap design, which enhances the block's rigidity and reduces engine vibration. The block has eight main bearing caps, each capable of holding one main bearing and one crankshaft journal. The main bearing caps are bolted to the block using 12 bolts, providing a strong and secure connection.

The Chevrolet 330817 400 engine block is also designed to accommodate a variety of cylinder head options, providing flexibility for customization and performance tuning. The block has a raised deck design, which allows for the use of aftermarket high-performance cylinder heads with increased compression ratios.

The surface finish of the engine block is critical for ensuring a proper seal between the piston rings and the cylinder bore. The Chevrolet 330817 400 engine block features a nitrided bore finish, which provides a smooth and hard surface that reduces friction and improves ring sealing. The block also has a shot-peened exterior surface, which helps to reduce stress concentrations and improve engine durability.

In summary, the Chevrolet 330817 400 engine block is a high-performance and durable component designed for use in heavy-duty applications. Its cast iron construction, split-type design, cross-bolted main bearing caps, and flexible cylinder head options make it a popular choice among enthusiasts and performance builders. The engine block's nitrided bore finish and shot-peened exterior surface further enhance its durability and reliability.

Buying a Chevrolet 330817 400 engine block can be a good investment for those looking to build or rebuild a high-performance Chevrolet engine. Here are some pros and cons to consider before making a purchase:

1. Power: The 400 cubic inch (6.7 L) engine block is known for its power and reliability. It was originally used in various Chevrolet vehicles from the late 1960s to the early 1990s.

2. Availability: Aftermarket engine blocks for this engine are widely available from various suppliers, making it relatively easy to find a good quality block.

3. Versatility: The 400 engine block can be used in a variety of applications, from street rods to racing engines. It can also be easily modified to increase power and torque.

4. Value: A used 400 engine block can be a cost-effective option compared to purchasing a new aftermarket block or a complete remanufactured engine.

1. Age: The 400 engine block is an older design, and some parts may be harder to find or more expensive to replace.

2. Condition: Used engine blocks can vary widely in condition, from nearly new to heavily worn. It's important to thoroughly inspect the block before purchasing to ensure that it's in good condition.

3. Machining: If the engine block needs to be machined to install new parts or to ensure a precise fit, this can add to the cost and time required to complete the project.

4. Compatibility: Depending on the specific application, the 400 engine block may not be fully compatible with all components, requiring additional modifications or replacements.

In conclusion, buying a Chevrolet 330817 400 engine block can offer significant power and versatility, but it also comes with some challenges, such as potential compatibility issues and the need for thorough inspection and machining. It's important to weigh these factors against the cost savings and performance benefits before making a purchase.

If you're confident in your ability to assess the condition of the block and have the necessary skills and resources to complete the project, a used 400 engine block can be a cost-effective option for building a high-performance Chevrolet engine. However, if you're looking for a more turnkey solution or are concerned about compatibility issues, it may be worth considering a remanufactured engine or a new aftermarket block. Ultimately, the decision should be based on your budget, experience level, and specific project requirements.

Details:

Sbc 400 engine block for sale. I will crate it and ship anywhere in the USA. Has been hot dipped and bored 60 over. Perfect shape and ready to build.

specifications engineblocksam:

• for models: 400
• brand: Chevrolet
• mpn: 330817
• type: Engine Block
• material: Cast Iron
• vintage part: Yes
• item weight: 220

offer engineblocksam:

• in stock #: 4
• sold #: 7
• availability: in stock
• prices: $699.99–$27900.00
• item condition:
  • Used
  • New
• options: ship-to-home
• started: march 21, 2026

payments engineblocksam:

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

returns engineblocksam:

• policy: no returns

shipping engineblocksam:

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

general engineblocksam:

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

seller engineblocksam:

• rating: 100.0%
• city: greenville, south carolina
• # reviews: 32