fits model: 350, 400, 455. make: Pontiac.

( Manufacturer Part Number: 6X-8 ), ( Part Type: Head )
Introducing the 350 heads 6x-8 400 455 Pontiac cylinder heads, an essential upgrade for your Pontiac engine. These high-performance cylinder heads are designed to deliver improved power, efficiency, and engine longevity.
Crafted from premium cast aluminum alloy, these cylinder heads feature a 6x-8 bolt pattern, ensuring compatibility with a wide range of Pontiac engines, including the 400 and 455 cubic-inch V8 engines. The 6x-8 bolt pattern provides a robust and secure mounting, ensuring optimal engine performance and reliability.
The 350 heads 6x-8 400 455 Pontiac cylinder heads feature a 2.02-inch intake and 1.60-inch exhaust valve size, providing ample flow for increased power and torque. The cylinder heads also feature a high-lift, roller-type camshaft, which reduces friction and improves valve lift, leading to improved engine performance and fuel efficiency.
The cylinder heads feature a fully-machined and polished combustion chamber, which provides a smooth and efficient air-fuel mixture. The cylinder heads also feature hardened valve seats, ensuring a long-lasting and reliable seal between the valves and the cylinder head.
The 350 heads 6x-8 400 455 Pontiac cylinder heads are designed to provide a powerful and reliable upgrade to your Pontiac engine. These cylinder heads are an excellent choice for anyone looking to improve their engine's power, efficiency, and longevity. Whether you're looking to upgrade your daily driver or your weekend racing machine, these cylinder heads are an excellent choice.
In conclusion, the 350 heads 6x-8 400 455 Pontiac cylinder heads are an excellent upgrade for any Pontiac engine. With their 6x-8 bolt pattern, large valve size, and high-lift camshaft, these cylinder heads provide improved power, efficiency, and reliability. These cylinder heads are an excellent investment for any Pontiac enthusiast looking to take their engine to the next level.
Pros of buying 350 heads (6-8 400, 455 Pontiac cylinder):1. Wide Availability: The 350 engine is a popular choice for many car enthusiasts, and therefore, the heads for this engine are widely available in the aftermarket.
2. Compatibility: The 350 heads are compatible with various Pontiac engines, including the 6-8 400 and 455.
3. Reliability: The 350 engine is known for its reliability and durability, and the heads are no exception.
4. Cost-Effective: Replacing the heads can be a cost-effective way to improve the performance of your Pontiac engine without having to invest in a complete engine rebuild.
Cons of buying 350 heads (6-8 400, 455 Pontiac cylinder):1. Quality Variations: The quality of the aftermarket heads can vary greatly, and it's essential to research and choose a reputable supplier to ensure you're getting a high-quality product.
2. Installation Complexity: Installing the heads can be a complex and time-consuming process, and it may require specialized tools and skills.
3. Potential for Engine Mismatches: If the heads are not compatible with your specific engine or are not properly installed, it could lead to engine misfires, decreased performance, or even engine damage.
Conclusion:If you're in the market for new heads for your Pontiac engine, the 350 heads are a popular and reliable option. However, it's crucial to research a reputable supplier and ensure the heads are compatible with your specific engine model. It's also essential to consider the potential complexity of the installation process and the potential for engine misfires or damage if the heads are not properly installed.
Recommendation:If you're considering purchasing 350 heads for your Pontiac engine, we recommend researching reputable suppliers and reading reviews from other customers to ensure you're getting a high-quality product. Additionally, it may be beneficial to consult with a professional mechanic to ensure the installation process is completed correctly and to avoid any potential engine misfires or damage.
1976 Pontiac 6x 8 heads 101ccheads have been hot tanked and no cracks valves were ground and new seals were installed primed and painted with high heat products.