Stock Sbc Heads Vs Aftermarket: Which Is Better?

The debate between stock SBC heads and aftermarket SBC heads has been a long-standing one in the world of automotive performance. With advancements in technology and materials, the aftermarket SBC heads have been able to offer improved performance over the stock SBC heads.

In this article, we’ll discuss the differences between stock SBC heads and aftermarket SBC heads, and how they affect the performance of an engine. We’ll also look at the advantages and disadvantages of each option and the cost involved in upgrading from stock SBC heads to aftermarket SBC heads. Get ready to learn more about the stock SBC heads vs. aftermarket SBC heads debate and find out which one is best for your engine.

Sbc Heads: Stock Vs. Aftermarket

Before delving into the topic of stock SBC heads versus aftermarket SBC heads, it is important to understand the basics of an SBC engine. SBC stands for small block Chevrolet, which is a type of engine that was produced by General Motors. It is a V8 engine with a displacement of 4.3 to 6.2 liters.

The SBC engine is known for its lightweight design and ability to produce high horsepower. Now that we have a basic understanding of the SBC engine, let’s look into the differences between stock SBC heads and aftermarket SBC heads. We will explore the advantages and disadvantages of each, as well as the cost and performance implications of each option.

Overview

Comparing stock Small Block Chevy (SBC) heads to aftermarket SBC heads is a great way to determine what type of heads are best for your engine build. While stock SBC heads may be adequate when performing basic engine modifications, aftermarket SBC heads offer a great way to increase the performance of your engine.

Aftermarket SBC heads come in a variety of sizes and shapes and can help increase the power of your engine by allowing for larger valves, increased air flow, and improved combustion efficiency.

Additionally, aftermarket SBC heads often feature lighter construction than stock SBC heads, which can further increase performance. Before making a decision on which type of SBC heads to use, it is important to consider the cost, what type of modifications you are planning, and the desired end result.

Definition Of Sbc Heads

Small Block Chevy (SBC) heads are cylinder heads used in the Chevrolet Small Block engine family. These heads are designed to provide efficient combustion and airflow for optimal power, torque, and fuel economy.

SBC heads come in two varieties: stock and aftermarket. Stock SBC heads are the standard components that come factory-installed on engines, while aftermarket SBC heads are performance-oriented components that have been modified for increased performance.

Stock SBC heads are designed for basic operation and everyday driving, while aftermarket SBC heads are designed to handle high-performance applications. They can also be modified further for custom applications with special modifications.

Types Of Sbc Heads

The most common types of Small Block Chevy (SBC) cylinder heads are stock and aftermarket options. Stock heads are those that are supplied with a new engine, or come from the factory. Aftermarket heads are designed by aftermarket parts manufacturers, and are designed to improve the performance of the engine. Stock heads are generally constructed from cast iron and feature a single-piece design.

These heads offer decent performance, but they are limited in how much power they can produce. Aftermarket heads are usually made from aluminum and have two-piece designs. This allows for more advanced features such as larger ports and better flow characteristics.

The main difference between stock and aftermarket SBC heads is the material they are made from. Stock heads are typically made from cast iron, while aftermarket heads are typically made from aluminum. Aluminum heads are lighter and can offer better performance, but they are also more expensive.

In conclusion, stock and aftermarket SBC heads are the two main types of cylinder heads available for a Small Block Chevy. Stock heads are made from cast iron and are limited in their performance capabilities. Aftermarket heads are made from aluminum and offer improved performance, but are also more expensive.

Differences

When considering the differences between stock SBC heads and aftermarket SBC heads, there are several things to consider. First, aftermarket heads are usually cast with higher-grade aluminum than stock heads, which makes them more durable and long-lasting. Stock heads also tend to have less efficient ports and combustion chambers than aftermarket heads, allowing for more efficient airflow and fuel combustion.

Additionally, aftermarket heads often come with a variety of upgrades, including performance-enhancing components such as roller rockers, adjustable valves, and multi-angle valve jobs. This can provide increased power and torque compared to stock heads. Finally, aftermarket heads usually have a much higher price tag than stock heads, so they are generally considered to be a more expensive investment.

Advantages Of Stock Sbc Heads

Stock Small-Block Chevy (SBC) heads have been the mainstay of factory performance for decades. They are made from high-grade iron and have proven to be reliable and durable. Stock SBC heads have several advantages over aftermarket heads. Firstly, stock SBC heads are generally less expensive than aftermarket heads.

This is because the cost of producing them is lower due to the use of existing factory tooling and components. Secondly, stock SBC heads are a good choice for those who want to use a mild cam and still make good power. Since these heads are designed to work with factory cams, they provide a good balance between performance and reliability.

Lastly, stock SBC heads have proven their longevity and reliability over the years, making them a great choice for those who want to keep their engine running for a long time.

Cost

When it comes to cost, the stock SBC heads are often the more affordable option. They can sometimes be found for as low as $50-$75 each. On the other hand, aftermarket SBC heads can cost anywhere from $100-$500 each.

It really depends on the quality of the head and the brand you are buying from. Generally, the higher quality and more expensive brands will have better performance, but it’s ultimately up to you to decide how much money you want to spend. Additionally, you will also need to factor in the cost of installation, as this can be a costly endeavor depending on the level of complexity.

Availability

When it comes to availability, stock SBC heads are far more common than aftermarket. The stock SBC heads are usually more affordable and easier to come by, as they are mass-produced and stocked by many auto parts stores. On the other hand, aftermarket SBC heads are produced by individual companies and usually require a special order.

This can take longer and be more expensive to get them. Additionally, aftermarket SBC heads can sometimes be difficult to find in certain areas, depending on the availability in the local market.

Durability

When it comes to durability, stock SBC heads generally have a slight edge over aftermarket SBC heads. This is due to the fact that stock SBC heads are made from cast iron, which is more durable than the aluminum used to manufacture aftermarket SBC heads.

Additionally, stock SBC heads are designed to last for the life of the engine, while aftermarket SBC heads may need to be replaced more often due to wear and tear. While both types of heads offer increased performance, the stock SBC heads are the more reliable choice, that will last longer and stand up better to the rigors of high-performance driving.

Disadvantages Of Stock Sbc Heads

One of the major disadvantages of stock SBC heads is the lack of power and performance when compared to aftermarket alternatives. Stock SBC heads are limited in terms of porting, intake, and exhaust design, resulting in reduced airflow and loss of power. Stock SBC heads also tend to be made from weaker materials which can be prone to cracking and warping.

Additionally, stock SBC heads are often restricted in terms of valve sizes, compression ratios, and other variables that can affect overall engine performance. Lastly, stock SBC heads are often expensive for what they offer and may not be worth the cost.

Performance

When it comes to performance, aftermarket SBC heads are definitely the way to go. These heads are designed to maximize airflow and performance, giving your engine an edge over stock SBC heads. Aftermarket SBC heads feature larger intake and exhaust ports, improved combustion chamber designs, and more efficient valvetrain components.

These upgrades make them more powerful and efficient than stock heads, giving you the power you need to dominate the street and track. They also come with a variety of different camshafts, which can be used to further optimize your engine’s power output. If you’re looking for the best performance possible, aftermarket SBC heads are the way to go.

Quality

When it comes to quality, aftermarket SBC heads have the clear advantage. These heads are machined from high-grade castings or billet aluminum and designed to exacting standards. They feature better port designs, improved combustion chamber designs, and increased flow capabilities that result in more power.

Aftermarket heads are also designed to dissipate heat better and last longer than stock heads. Additionally, these heads are designed to be adjustable to suit a variety of engine setups and come with a variety of valvetrain components to help you achieve the desired performance.

Advantages Of Aftermarket Sbc Heads

Aftermarket Small Block Chevy heads offer a number of advantages over stock SBC heads. Most aftermarket heads are designed to provide improved airflow for better performance, making them the ideal choice for performance builds.

Aftermarket heads also often feature improved combustion chambers and valve designs that provide increased power and torque. Additionally, aftermarket heads are often constructed from light weight materials, making them ideal for race applications where every ounce counts.

The improved port designs, combustion chamber shapes, and valve sizes of aftermarket SBC heads also allow for larger valves to be used, which is another factor that increases airflow and power. Finally, aftermarket SBC heads are often offered with CNC-machined ports and chambers, which can be tailored to the specific needs of each engine build. All these advantages make aftermarket SBC heads the ideal choice for performance applications.

Performance

When it comes to performance, aftermarket SBC heads are an appealing option for engine builders. These heads are designed to maximize airflow and power, while also providing a higher compression ratio than stock SBC heads.

They’re made from high-grade aluminum that’s both lightweight and durable, making them an ideal choice for serious performance upgrades. Aftermarket SBC heads are also designed with larger valves and ports, allowing for increased airflow and better cylinder head efficiency.

This can result in more horsepower and torque, as well as improved fuel economy. Additionally, aftermarket SBC heads come with improved valvetrain components which can enhance the life of the engine and provide increased reliability. With more cylinder head options available, aftermarket SBC heads can be tailored to an individual’s desired performance goals.

Quality

When it comes to quality, aftermarket SBC heads have a distinct advantage over stock SBC heads. Aftermarket heads are typically made of higher quality materials than stock heads, meaning they tend to last longer and hold up better against wear and tear. Aftermarket heads also typically feature advanced machining that allows for improved airflow and better performance overall.

Additionally, aftermarket heads often offer better cooling capabilities, meaning they can help keep your engine temperature lower. All of these benefits can help ensure that your engine is running at peak performance and lasts for as long as possible.

Customization

When it comes to customization, aftermarket SBC heads have a distinct advantage over stock heads. Aftermarket heads come with adjustable valves and valve seats, allowing for more precise tuning.

The intake and exhaust ports can be reshaped to help improve airflow, resulting in improved performance and fuel economy. Aftermarket heads can also have larger valves, increased compression ratio, and higher-flow intake and exhaust ports.

Additionally, aftermarket heads often come with high-performance gaskets and hardware, which can help reduce the risk of leaks and other problems. In short, aftermarket heads offer more customization options, allowing you to tailor your engine to meet your specific needs.

Disadvantages Of Aftermarket Sbc Heads

Aftermarket SBC heads come with a few disadvantages compared to stock SBC heads. Firstly, aftermarket heads are often more expensive. They can cost up to three times more than stock heads.

Secondly, aftermarket heads may not fit all applications, so it is important to make sure that the heads you purchase are a proper fit for your vehicle. Thirdly, aftermarket heads require more maintenance than stock heads.

This is because the aftermarket heads are often made of more complex materials, and they require more frequent cleaning and maintenance to keep them running smoothly. Finally, aftermarket heads may not be compatible with stock parts. This means that you may need to purchase additional parts to make sure that the aftermarket heads are compatible with your engine.

Cost

The cost of stock SBC heads and aftermarket SBC heads can vary significantly. Stock SBC heads generally cost significantly less than aftermarket heads, but they may not provide the same performance gains. Aftermarket heads are designed to provide more power, torque, and efficiency than stock heads, but they come at a price.

In addition to the initial cost of the heads, you’ll also need to factor in the cost of labor and installation costs which can quickly add up. Ultimately, it’s up to you to decide if the added performance is worth the added cost.

Availability

When it comes to availability, stock SBC heads have the advantage. Because they come factory-installed on vehicles, they are readily available from a variety of sources. You can find them in salvage yards, on eBay, or even at the local junkyard. On the other hand, aftermarket SBC heads require some searching and shopping around.

They are generally not as easy to find and may require a bit of a search to find the right one for your specific needs. Additionally, aftermarket SBC heads can come with a hefty price tag, making them a bit more expensive than stock SBC heads. In the end, it really comes down to personal preference and budget when it comes to choosing between stock and aftermarket SBC heads.

Installation

Installing aftermarket SBC heads can be a more involved process than installing stock heads. Depending on the particular aftermarket heads, it may be necessary to have the heads machined for the specific engine.

Additionally, the intake and exhaust manifold must be carefully matched to the heads, and the intake manifold may need to be modified for the aftermarket heads. New rocker arms may also need to be purchased to accommodate the aftermarket head design as well. The extra effort may be worth it, however, as aftermarket heads can provide improved performance.

Conclusion

Aftermarket SBC heads are a great way to upgrade your engine’s performance, offering increased power and improved efficiency. They typically have larger valves, improved porting, and higher compression ratios than stock SBC heads, allowing for more air and fuel to enter the combustion chamber.

However, they can be expensive and may require additional modifications to work properly. Ultimately, the choice between stock SBC heads and aftermarket SBC heads depends on your budget and desired performance level.

FAQ’s

1.What Are The Benefits Of Using Aftermarket Sbc Heads?

Ans: The main benefit of using aftermarket SBC heads is increased performance. They often have larger ports and chambers, which can help to maximize airflow throughout the engine.

This improved airflow can result in increased power and torque, as well as improved fuel efficiency. Aftermarket SBC heads also typically feature stronger materials and improved design, resulting in increased durability and reliability.

2.What Kind Of Performance Gains Can Be Expected When Using Aftermarket Sbc Heads?

Ans: Aftermarket SBC heads can provide significant performance gains over stock heads, depending on the application. These gains can include increased airflow, improved combustion chambers, and better valvetrain components.

Ultimately, the performance gains depend on the quality of the aftermarket heads and the requirements of the engine. However, aftermarket SBC heads typically provide a noticeable increase in engine power and torque.

3.What Are The Differences Between Stock Sbc Heads And Aftermarket Sbc Heads?

Ans: The main difference between stock SBC heads and aftermarket SBC heads is the quality of the casting and the design. Stock SBC heads are generally made with a lower grade of cast iron and use a more restrictive design, while aftermarket heads are typically made with higher grade aluminum and feature more advanced designs.

Aftermarket heads also tend to offer more options for customization and performance, such as different valve sizes, port shapes, and compression ratios. Finally, aftermarket heads are usually more expensive than stock SBC heads.

4.Are Aftermarket Sbc Heads More Expensive Than Stock Sbc Heads?

Ans: Yes, aftermarket SBC heads are typically more expensive than stock SBC heads, as they require more precise machining and custom components. Aftermarket heads may also require the purchase of additional components such as valves and springs, which can add to the cost. However, the extra investment can be worthwhile as aftermarket SBC heads can provide greater power and torque.

5.What Are The Considerations When Selecting Aftermarket Sbc Heads?

Ans: When considering aftermarket SBC heads, there are several factors to keep in mind. These include the desired level of performance, the amount of money you are willing to spend, the weight and port size of the heads, and the type of fuel you plan on using. Additionally, you should also consider the overall compatibility of the heads with your engine block and the type of camshaft you want to use.