fits model: 351w, 302. make: Ford. year: 1968–2001.

( Brand: Dart ), ( Manufacturer Part Number: 66130021 ), ( Part Type: Block ), ( UPC: 099998576703 )
The Dart 66130021 Block Ford Kit is a high-performance cylinder block designed for use in Ford engines, specifically those with the 302 cubic inch (5.0L) engine from the 1968 model year and the 1969-1997 351 Windsor engines. This block is an excellent upgrade option for those seeking improved engine performance and durability.
This forged steel block features a bore size of 4.040 inches and a stroke length of 3.380 inches, providing an increased displacement and power output compared to the original cast iron block. The block's design incorporates 4-bolt main bearings and a 2-bolt oil pan rail, ensuring a strong and stable foundation for your engine.
The Dart 66130021 Block Ford Kit is machined to exacting standards, ensuring a precise fit and finish. The block's deck surface is flat and smooth, allowing for easy and accurate cylinder head installation. The block also features a raised oil pan rail, which provides additional clearance for high-performance oil pumps and other accessories.
The block's main caps are made from 6061-T6 aluminum alloy, providing excellent strength and reduced weight compared to the original cast iron main caps. The cap design also includes chamfered main cap bosses, which make for easier installation and improved sealing.
The Dart 66130021 Block Ford Kit also includes a new crankshaft bearing surface, which is precision bored and machined to ensure a proper fit with your crankshaft. This new surface also provides improved oil flow and reduced friction, leading to increased engine efficiency and longevity.
Overall, the Dart 66130021 Block Ford Kit is an excellent upgrade option for those seeking improved engine performance and durability in their Ford 302 or 351 Windsor engine. The block's high-quality construction and precise machining ensure a strong and reliable foundation for your engine, while its increased bore size and stroke length provide a significant power boost. With its durable forged steel construction and aluminum main caps, this block is built to last and is an excellent investment for any serious Ford performance enthusiast.
a. High-Quality Material: Dart blocks are known for their durability and precision. The Dart 66130021 block is made of high-grade iron, ensuring strength and longevity.
b. Versatility: This block is compatible with both 302 and 351W engines, making it a convenient choice for those looking to build or restore multiple Ford vehicles.
c. Improved Performance: The Dart block is designed to provide better cooling and improved compression, leading to increased horsepower and torque.
d. Aftermarket Support: Dart is a reputable brand with extensive aftermarket support, ensuring easy access to parts and resources for installation and maintenance.
2. Cons:a. Cost: Dart blocks are generally more expensive than OEM (original equipment manufacturer) blocks. However, the increased performance and durability may justify the investment for some.
b. Machining Required: Depending on the specific engine build, machining may be necessary to ensure proper fitment and performance. This can add to the overall cost and complexity of the project.
c. Weight: The Dart block is heavier than stock blocks, which may affect the overall weight distribution and handling of the vehicle.
3. Conclusion:The Dart 66130021 block offers several advantages for those seeking improved performance and durability in their Ford engines. Its high-quality materials, versatility, and aftermarket support make it an attractive option for enthusiasts and restorers. However, the increased cost and potential need for machining may deter some potential buyers. Ultimately, the decision to purchase a Dart block depends on individual priorities, budget, and goals for the project.
Recommendation:If you are serious about maximizing the performance of your Ford engine and are willing to invest in a high-quality component, the Dart 66130021 block is a solid choice. Consider the added costs and potential need for machining in your budget and plan accordingly. For those on a tighter budget or with less ambitious engine goals, an OEM block may be a more cost-effective alternative.
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