fits model: Hemi. make: Mopar.

( Brand: Mopar Performance ), ( Manufacturer Part Number: P4120960 ), ( Part Type: Aluminum Head Plug ), ( Surface Finish: Aluminum ), ( Country/region Of Manufacture: United States )
The P4120960 Heads Hemi Plug Dual Race Bare 426 Mopar Performance is an exceptional upgrade for any 426 Hemi engine enthusiast. This set of heads is meticulously crafted to deliver optimal performance, power, and efficiency.
The dual race design of these heads ensures superior combustion chamber sealing, reducing the chances of detonation and promoting a more efficient fuel-air mixture. The bare design allows for maximum customization, enabling you to tailor the heads to your specific engine needs.
Made from high-quality materials, these heads are built to withstand the rigors of high-performance driving. The 426 cubic inch displacement provides ample power, making this set of heads ideal for those seeking to enhance their engine's output.
Mopar, a renowned name in the automotive industry, backs this product with its reputation for quality and reliability. The P4120960 Heads Hemi Plug Dual Race Bare 426 Mopar Performance is not just a simple upgrade; it's a testament to your commitment to performance and power.
Installing these heads is a straightforward process, thanks to their standard bolt pattern, but we recommend consulting with a professional mechanic to ensure proper installation and ensure that your engine is ready for the increased power.
In conclusion, the P4120960 Heads Hemi Plug Dual Race Bare 426 Mopar Performance is a must-have for any 426 Hemi engine enthusiast seeking to elevate their vehicle's performance. Its dual race design, high-quality materials, and renowned Mopar backing make it a reliable and powerful upgrade for your engine.
Pros of buying P4120960 Heads (Hemi Plug Dual Race Bare 426 Mopar Performance):1. High performance: The P4120960 Heads are designed for high-performance applications, offering increased power and torque.
2. Quality material: The heads are made from high-quality aluminum alloy, ensuring durability and strength.
3. Dual valve springs: The heads feature dual valve springs, which help reduce valve float and improve engine performance.
4. Bare design: The bare heads allow for easy customization and installation, as they do not come pre-assembled with valves, springs, or other components.
Cons of buying P4120960 Heads:1. High cost: The P4120960 Heads are a premium product and can be quite expensive compared to stock or lower-performance aftermarket heads.
2. Requires specialized tools: Installing the heads may require specialized tools and knowledge, which may add to the overall cost and time required for installation.
3. Limited availability: The P4120960 Heads may not be widely available, making it harder to find a replacement or to find a shop that can perform the installation.
Conclusion:If you are looking for high-performance heads for your Mopar engine, the P4120960 Heads are a great option. They offer increased power and torque, are made from high-quality materials, and feature dual valve springs for improved performance. However, the high cost and potential need for specialized installation tools and knowledge may make this a less appealing option for some customers. Ultimately, the decision to purchase these heads will depend on your specific needs, budget, and level of technical expertise.
Recommendation:If you are comfortable with the cost and have the necessary tools and knowledge to install the heads, the P4120960 Heads are a great choice for increasing the performance of your Mopar engine. However, if you are unsure or have a limited budget, you may want to consider other options, such as stock or lower-performance aftermarket heads, which may offer more affordable alternatives without sacrificing too much performance.
I do not know what size valves were in them.
They are bare, no valves, springs or retainers included, just as I purchased them. Heads are o ringed.
Heads are available locally and I reserve the right to end this offer at any time.
Needs 5 valve seats installed.
These heads have been sitting on the shelf since I bought them over 20 years and have the dust to prove it.