641087 JEEP Willys Block

Review JEEP Willys Block Casting

Introducing the Jeep Willys Block Engine, a iconic automotive component that brings a piece of history into your restoration project or custom build. This engine block, specifically the 1942-1971 Willys model with the part number 641087, is a must-have for Jeep enthusiasts seeking authenticity and power.

Measuring approximately 23.5 inches long, 9 inches wide, and 11 inches tall, this engine block is a substantial piece of machinery. It is designed to house the legendary Willys flathead four-cylinder engine, a powertrain that has been a cornerstone of Jeep's heritage for decades.

Constructed from cast iron, this engine block boasts impressive durability and strength. Its cylinder bore measurement is 3.5 inches, and the stroke length is 4.25 inches, resulting in a total displacement of 134.2 cubic inches or 2,210 cubic centimeters. This engine block is well-known for its simplicity, reliability, and ability to deliver a decent amount of power with minimal maintenance.

The Jeep Willys Block Engine 641087 is a fine example of automotive engineering from a bygone era. Its classic design, coupled with its robust construction, makes it an ideal choice for those seeking an authentic Jeep experience. Whether you're restoring a vintage Jeep or building a custom hot rod, this engine block is sure to add character and power to your project.

This engine block comes without any additional components, such as the crankshaft, camshaft, or cylinder heads. It is recommended that you source these parts from a reputable supplier to ensure proper fitment and function. Additionally, you will need to machine the cylinder bores and install the pistons, connecting rods, and other internal components before you can successfully install the block into your vehicle.

In conclusion, the Jeep Willys Block Engine 641087 is a valuable addition to any Jeep enthusiast's garage. Its classic design, impressive durability, and rich history make it a sought-after component for those seeking an authentic and powerful driving experience. With the right components and a bit of elbow grease, this engine block can power your Jeep restoration or custom build project to new heights.

Buying a Willys Jeep block, specifically the 1942-1971 model with the part number 641087, can be a worthwhile investment for those restoring or building a vintage Jeep vehicle. Here are some pros and cons to consider before making a purchase.

1. Authenticity: A new or rebuilt Willys Jeep block is an original replacement part for classic Jeep models. It ensures that your restoration project retains the original look and feel of the vehicle.

2. Durability: Older Jeep engines, including those using the Willys block, are known for their durability and longevity. Restoring your engine with a new or rebuilt block can give you peace of mind and extend the life of your vehicle.

3. Performance: A rebuilt or upgraded Willys block can provide improved performance compared to the original engine. This can be especially appealing for those planning to use their vintage Jeep for off-roading or other high-performance activities.

4. Availability: There are several reputable suppliers of vintage Jeep parts, including rebuilt blocks, making it relatively easy to find and purchase one.

1. Cost: Compared to modern engines, vintage Jeep blocks can be quite expensive. The cost of a rebuilt block can vary significantly depending on the condition and quality of the work.

2. Complexity: Older engines, including those using the Willys block, can be more complex to work on than modern engines. This can make the restoration process more time-consuming and labor-intensive.

3. Availability of other parts: Restoring a vintage Jeep engine requires a variety of other parts as well, and some of these may be difficult to find or expensive. This can add to the overall cost and complexity of the project.

A new or rebuilt Willys Jeep block can be an excellent investment for those restoring or building a vintage Jeep vehicle. It ensures authenticity, durability, and potential performance improvements, but it also comes with a higher cost and increased complexity compared to modern engines. Ultimately, the decision to purchase a Willys block should be based on your specific project goals, budget, and availability of other necessary parts.

If you are committed to restoring a vintage Jeep vehicle and prioritize authenticity and durability, a new or rebuilt Willys block is a worthwhile investment. However, be sure to do your research and purchase from a reputable supplier to ensure the best possible quality and value for your money. Additionally, consider budgeting for the additional cost of other necessary parts and the time and labor required for the restoration process.

Details:

Block is being sold as a core. Item for sale a 1942-1971 willys / Jeep engine block # 641087, which is the casting number l-34 go devil used in cj2a, cj3a and m38 model's. Block bore is .060 over stock, and has been in storage for 20 plus years.

specifications engineblocksam:

• for years: 1942–1971
• brand: Jeep
• mpn: 641087
• type: Engine Block
• vintage part: Yes
• country of origin: United States

shipping engineblocksam:

• transit: 3-9 days
• class: standard
• service: ups ground
• carrier: ups
• type: calculated

payments engineblocksam:

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

general engineblocksam:

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

seller engineblocksam:

• city: euclid, ohio
• rating: 100.0%
• # reviews: 67

offer engineblocksam:

• prices: $20.72–$65.33
• item condition:
  • New
  • Used
• options: ship-to-home
• availability: in stock
• in stock #: 5
• started: march 17, 2026
• sold #: 7

returns engineblocksam:

• policy: no returns