fits model: 57.

( Brand: Bohnalite Plymouth Cyl 42 46 47 48 49 50 51 52 ), ( Manufacturer Part Number: 671178 ), ( Part Type: Aluminum Head Cylinder )
The 671178 49 50 51 Plymouth Head is an essential component for any 47 Flathead engine, specifically the 42 Bohnalite 52 cylinder model. This head is meticulously crafted with a 48/46 combustion chamber design, which provides optimal combustion efficiency and power output.
The 671178 49 50 51 Plymouth Head features a robust construction, with a 50-degree valve angle that allows for efficient gas flow into and out of the cylinder. The head is made with high-quality materials, ensuring durability and reliability under extreme engine conditions.
One of the standout features of this head is its 49-pound heat mass, which helps to control engine temperature and prevent overheating. The head also comes with 51-threaded studs, ensuring a secure and reliable fit with the engine block.
The 671178 49 50 51 Plymouth Head is designed to work seamlessly with the 42 Bohnalite 52 cylinder, providing a perfect fit and ensuring optimal engine performance. Whether you're restoring a classic Plymouth or maintaining a high-performance Flathead engine, this head is an excellent choice.
In conclusion, the 671178 49 50 51 Plymouth Head is a high-quality and reliable component that is essential for any 47 Flathead engine with a 42 Bohnalite 52 cylinder. Its robust construction, efficient combustion chamber design, and secure fit make it an excellent choice for any enthusiast or professional mechanic.
The part you're referring to seems to be a Plymouth flathead engine cylinder head, specifically a 671178 49 50 51 Bohnalite 52. Let's break down the pros and cons of buying this part.
Pros:1. Bohnalite is a lightweight material that can help improve engine performance by reducing the weight of the cylinder head, potentially leading to improved fuel efficiency and power output.
2. The cylinder head appears to be in a good condition, as indicated by the "48 46 57" numbers, which likely refer to the hardness of the cast iron used to manufacture the head.
3. The use of a flathead engine in this part is still popular among enthusiasts and restorers of classic vehicles, which means that there is a demand for replacement parts and a good support network of enthusiasts and specialists.
Cons:1. The Bohnalite material may be less durable than traditional cast iron or aluminum materials, which could potentially lead to issues with heat dissipation or durability over time.
2. The part may be difficult to find in stock, as it is a specific model and may not be widely available from retailers.
3. The cost of the part may be higher than more common cylinder heads due to its rarity and unique material.
Conclusion:If you are a collector or restorer of a classic Plymouth vehicle and are looking for a high-performance upgrade for your flathead engine, this Bohnalite cylinder head may be a worthwhile investment. However, it is important to weigh the potential benefits of the lightweight material against the potential drawbacks, such as durability and availability. Additionally, it is recommended to research the part thoroughly and ensure that it is a good fit for your specific vehicle before making a purchase.
Recommendation:If you are unsure about whether this Bohnalite cylinder head is the right fit for your vehicle, it may be best to consult with a professional mechanic or engine specialist to get their expert opinion. They can help you evaluate the potential benefits and drawbacks of the part and make an informed decision about whether it is the right investment for your needs.
Bohnalite head, very rare and in excellent condition, plug threads are like new, no corrosion, these look great polished, also see the photo of Bohnalite's 1934 Indy 500 entry, designed for compression and flow.