1-286-004-01 SPEEDMASTER Windsor Billet Iron Engine Block B-4

Review SPEEDMASTER Ford Windsor 4-bolt Billet Main Iron Engine Block for FORD 351W B-4 500

The Speedmaster 1-286-004-01 engine block is a high-performance, billet iron piece designed specifically for use with Ford's 351W Windsor B-series engines. This engine block is ideal for those seeking increased power and durability in their 4.0-liter, 351C DH-9.500 4-bolt engines.

This billet iron engine block boasts several advantages over its cast iron counterparts. First and foremost, its solid design provides enhanced strength and rigidity, reducing the likelihood of cracks and warping that can occur in cast iron blocks. The billet iron construction also allows for greater precision in machining, resulting in a more uniform bore finish and improved cylinder wall surface finish.

The Speedmaster 1-286-004-01 engine block is designed to accommodate Ford's 351W Windsor B-series engines, and is specifically suited for use with the 4.0-liter, 351C DH-9.500 4-bolt engine. It features a 4.000-inch bore size, ensuring a perfect fit for the engine's pistons, and a 9.500-inch deck height, providing ample clearance for the engine's components.

This engine block is also equipped with 4-bolt mains, which offer increased clamping force and improved engine rigidity, leading to better power delivery and increased durability. The use of 4-bolt mains also allows for the use of aftermarket connecting rods and cranks, providing more options for customization and performance upgrades.

The Speedmaster 1-286-004-01 engine block is a high-quality, precision-engineered component that is ideal for those seeking to build a high-performance Ford engine. Its solid billet iron construction provides enhanced strength and rigidity, while its precision machining ensures a perfect fit and finish. With its compatibility with Ford's 351W Windsor B-series engines and 4.0-liter, 351C DH-9.500 4-bolt engines, this engine block is a must-have for any serious Ford engine builder.

Pros and Cons of Buying a Ford 351W Windsor B-Block Engine with Speedmaster 1-286-004-01 Engine Block

The Ford 351W Windsor B-Block engine is known for its durability and performance. When paired with a Speedmaster 1-286-004-01 billet iron engine block, this engine setup offers enhanced strength and improved power output. In this analysis, we'll discuss the advantages and disadvantages of purchasing a Ford 351W Windsor B-Block engine with a Speedmaster 1-286-004-01 engine block.

1. Increased Strength: The billet iron engine block from Speedmaster provides increased strength and durability compared to a cast iron block. This results in better resistance to engine stress, allowing for higher horsepower and torque output.

2. Enhanced Cooling: The billet iron block's design allows for improved cooling efficiency. This is crucial for maintaining engine temperature and longevity, especially during high-performance applications.

3. Customizability: A billet iron engine block is easier to machine and modify compared to a cast iron block. This means that engine builders can customize the block to their specific requirements, such as bore size, cylinder head ports, and deck height.

4. Increased Longevity: The billet iron engine block is known for its superior resistance to fatigue and thermal stress. This translates to a longer engine life and reduced maintenance costs.

5. Better Balance: The billet iron block offers better engine balance, which is essential for optimizing power delivery and minimizing vibration.

1. Higher Cost: The Speedmaster 1-286-004-01 billet iron engine block is more expensive than a standard cast iron block. This increased cost may be a deterrent for some engine builders or enthusiasts.

2. Complexity: The manufacturing process for billet iron engine blocks is more complex than casting. This can lead to longer lead times and higher production costs.

3. Weight: The billet iron engine block is denser and heavier than a cast iron block. This additional weight may impact engine performance, particularly in high-rpm applications.

The Ford 351W Windsor B-Block engine with a Speedmaster 1-286-004-01 billet iron engine block offers numerous advantages, such as increased strength, enhanced cooling, customizability, increased longevity, and better balance. However, it also comes with some disadvantages, such as a higher cost, complexity, and additional weight. Ultimately, the decision to purchase this engine setup depends on the specific needs, budget, and performance goals of the engine builder or enthusiast.

If you're seeking a high-performance engine setup with superior strength, durability, and customizability, then the Ford 351W Windsor B-Block engine with a Speedmaster 1-286-004-01 billet iron engine block is an excellent choice. However, be prepared for a higher cost, longer lead times, and additional weight compared to a standard cast iron block. This engine setup is ideal for enthusiasts and engine builders who demand the very best in terms of power, performance, and longevity.

Details:

Priority main oiling with external pump. Specs brand: Speedmaster part number: 1-286-004-01 type: engines, bare block cylinder bore diameter: 4.000 in. Designed to look standard under your bonnet, and work with stock components. Cup plug cylinder wall thickness: 0.250 in.

Notes: check hood clearance before installing. Bore stroke: 4.185 in. All the factory flaws re designed to eliminate all problems, still using water jacket design. Block is ready for the street racer or all out with added strength and cubic inches.

Blocks are cast from highest quality high-density iron with extra-thick cylinder walls and decks. Max recommended cam journal od: standard SF - can be bored to 55mm plug: 2.375 in. Bore quantity: sold individually. The next level of performance is these cast iron Ford small blocks.

specifications engineblocksam:

• for models: 351w, B-4, 500
• for makes: Ford
• brand: Speedmaster
• mpn: 1-286-004-01
• type: Engine Block
• manufacturer warranty: 1 Year
• material: Cast Iron

seller engineblocksam:

• city: rialto, california
• rating: 98.9%
• # reviews: 1258

general engineblocksam:

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

payments engineblocksam:

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

returns engineblocksam:

• policy: returns accepted
• paid by: seller
• time: 30 days

offer engineblocksam:

• prices: $2169.79–$2598.68
• item condition: New
• sold #: 19
• options: ship-to-home
• started: september 10, 2025
• in stock #: 4
• availability: in stock

shipping engineblocksam:

• class: standard
• carrier: fedex
• transit: 3-9 days
• type: fixed
• service: fedex ground / fedex home delivery