fits make: Buick. year: 1938–1950.

( Brand: Sealed Power ), ( Manufacturer Part Number: 248-.040 ), ( Part Type: Engine Piston )
The 8-cylinder NOs engine piston, specifically designed for Buick's 248 straight 8 engine from the years 1938 to 1950, is a crucial component in the engine's operation. This highly engineered piston, with a bore size of 0.40 inches, is meticulously crafted to deliver optimal performance and reliability.
The piston is made from a high-quality material, such as forged aluminum, which ensures lightweight yet robust construction. The piston's crown is designed with a dish shape to allow for efficient combustion and compression of the fuel-air mixture, while the skirt is engineered to minimize friction with the cylinder walls for reduced wear and tear.
The piston rings, an essential part of the piston, are designed to seal the combustion chamber and prevent the leakage of gases. They are made of a durable material and are precision-fit to ensure a tight seal, reducing engine oil consumption and improving efficiency.
The piston's design includes a wrist pin, which connects the piston to the connecting rod, and a piston pin boss, which mounts the piston to the crankshaft. The wrist pin is made from a tough material like chrome molybdenum steel, and the pin boss is machined to provide a secure and reliable connection.
The 8-cylinder NOs engine piston is a testament to Buick's engineering prowess and commitment to delivering high-performance and reliable automotive components. It is an essential part of the engine that plays a crucial role in the overall performance and longevity of the vehicle.
Pros of buying an 8-cylinder NOs engine with a piston size of 0.400 inches and a displacement of 248 cubic inches (248-.040) from a 1938-1950 Buick:1. Power and Performance: The larger piston size and displacement of this engine provide more power and torque, which can result in improved acceleration and overall performance.
2. Classic Appeal: The Buick 248 engine is a classic motor, often associated with the golden age of automobiles. Owning such an engine can add to the nostalgic value of a car and be a point of pride for enthusiasts.
3. Availability of Parts: Since the Buick 248 engine has been around for a long time, there is a wide range of aftermarket parts available, making it easier to maintain and repair the engine.
Cons of buying an 8-cylinder NOs engine with a piston size of 0.400 inches and a displacement of 248 cubic inches (248-.040) from a 1938-1950 Buick:1. Fuel Efficiency: The larger engine size and higher power output can result in lower fuel efficiency, which may be a concern for modern drivers who prioritize fuel economy.
2. Maintenance and Repair Costs: While there are many aftermarket parts available for this engine, some repairs and maintenance tasks may be more expensive due to the age and specificity of the engine.
3. Emissions Regulations: Depending on the location and the specific requirements of local emissions regulations, it may be difficult to modify the engine to meet modern emissions standards while still retaining its original performance characteristics.
Conclusion: If you are an enthusiast of classic automobiles and enjoy the power and performance of a large-displacement engine, an 8-cylinder NOs engine with a piston size of 0.400 inches and a displacement of 248 cubic inches (248-.040) from a 1938-1950 Buick may be a great choice for you. However, be prepared for the potential costs associated with fuel efficiency, maintenance, and repair, as well as the challenges of meeting modern emissions standards.
Recommendation: If you are considering purchasing an 8-cylinder NOs engine with a piston size of 0.400 inches and a displacement of 248 cubic inches (248-.040) from a 1938-1950 Buick, it is essential to research the specific requirements of your local area, including emissions regulations and the availability of parts and repair services. Additionally, consider the potential impact on fuel efficiency and the ongoing costs of maintenance and repair before making a final decision.
Measured with a cheap dial caliper and may be - couple thousandths. Offer is for 6 pistons with pins. New nos piston lot is a little dusty dirty and shows some light patina from sitting on the shelf, see pics for condition.
Please e-mail with any questions before buying purchasing.
New nos Sealed Power piston lot.