Best Headers for 602 crate motor

ByWalter D. Chien

When it comes to choosing the best headers for a 602 crate motor, there are several factors to take into consideration. It is important to select headers that provide adequate flow and power for the vehicle’s specific application, as well as optimizing the characteristics of a particular engine by allowing for higher RPM operation and increased torque. Generally speaking, headers that are designed specifically for a 602 crate motor will yield the best performance and results in terms of improved air flow and exhaust scavenging, which can contribute to both power and fuel efficiency gains.

These headers should also be constructed from high quality materials such as stainless steel, with mandrel-bent tubing to ensure maximum exhaust flow. Additionally, they should feature smooth transitions between cylinders to further increase air flow velocity and optimize scavenging capabilities. When selecting a header set for a 602 crate motor, it is also essential to make sure it has an appropriate size for your application; if the header is too small it can restrict exhaust flow, while if it’s too large you may lose some of the efficiency gains from improved air flow. Finally, many aftermarket header sets come with additional features including ceramic coating or heat shields – these can help reduce underhood temperatures and further improve performance by keeping exhaust gases hot. Ultimately, selecting the right header set for your 602 crate motor will help you to get the most out of your engine and maximize its performance. With careful consideration of all these factors, you can be sure to find a header set that is perfect for your application.

Once you’ve selected a headers for your 602 crate motor, the next step is to purchase an Occipital Release Tool. This tool ensures proper and safe installation of the headers, allowing them to perform at their optimal level without any potential damage or hazards. The Occipital Release Tool allows you to safely disconnect linkages and other components that may be attached to the engine for easy access when it comes time for installation. Additionally, it comes with a variety of different lengths and sizes to fit any application. When purchasing an Occipital Release Tool, you should be sure to pay attention to the build quality and durability of the product; while cheaper models may be available, investing in a higher-quality tool will ensure greater longevity and performance.

Buying Guide

1. Power

One of the most important factors to consider when purchasing headers for a 602 crate motor is the power that they will provide. Headers are designed to increase the amount of airflow into the engine, which can lead to more power. More powerful headers can be beneficial for racing applications, but may not be necessary for street use.

2. Fitment

Another important factor to consider is whether or not the headers will fit your vehicle. Headers are available in a variety of sizes and shapes, so it is important to select a set that will fit properly in your engine bay. If the headers do not fit properly, they may not provide the desired performance gains.

3. Material

Headers are typically made from either steel or stainless steel. Steel headers are usually less expensive, but are more susceptible to rusting. Stainless steel headers are more durable and will last longer, but are typically more expensive.

4. Coating

Some headers are available with a coating that is designed to resist corrosion and improve durability. Coated headers can be beneficial, but may be more expensive than uncoated headers.

5. Installation

Installing headers can be a difficult task, so it is important to consider whether or not you will be able to install them yourself or if you will need to hire a professional. If you are not confident in your ability to install the headers, it is best to hire a professional to avoid damaging your vehicle.

1. Doug’s Headers D6512-R 1-3/4″ 4-Tube Shorty Exhaust Header

Doug's Headers D6512-R
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Doug’s Headers D6512-R is a specific product that is a 1-3/4″ 4-Tube Shorty Exhaust Header for a Street Rod Universal 351C engine. It is manufactured by the company Doug’s Headers. Exhaust headers are designed to improve the engine’s exhaust flow, which can lead to an increase in horsepower and torque. The “Shorty” design of this header means that the tubes are shorter than traditional headers, which may be beneficial for certain types of vehicles or engine builds.

ProsCons
– Improved performance– Installation may be difficult
– High-quality construction
– Compact design
– High Compatible

2. Hedman Hedders 602 Crate Engine Swap Long Tube Headers

Hedman Hedders 602 Crate Engine Swap Long Tube Headers
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These Hedman long tube headers are designed specifically for GM 602 Crate Engines, providing maximum exhaust flow and performance. They feature a 1-5/8” primary with a 3” collector, made from durable 16 gauge mild steel tubing with a heavy-duty flange and mounting hardware included. The mandrel bent tubing improves exhaust flow while the silver ceramic coating helps to keep temperatures low, greatly increasing engine longevity and power output potential!

ProsCons
– Improved performance torque.– More expensive than stock exhaust
– High-quality construction
– Designed for specific engine swaps
– Customizable
– Better sound

3. Patriot Exhaust H8088 Long Tube Headers

Patriot Exhaust H8088 Long Tube Headers: Patriot Exhaust
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H8088 long tube headers are crafted from high-grade, stainless steel for superior corrosion resistance and longer service life. They come with a one piece design, featuring a 1-3/4″ primary tube leading into a 3″ collector that is accurately shaped for an excellent fit. The Tig welded construction provides exceptional strength and durability, making them one of the strongest headers on the market for your 602 crate engine swap! 

ProsCons
– Improved performance– May not be legal in all states
– High-quality construction
– Customizable
– Better sound
– Improved fuel efficiency

4. BBK Performance 1527 Long Tube Headers

BBK Performance 1527 Long Tube Headers
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BBK Performance 1527 long tube headers are designed specifically to fit GM’s 602 crate engines, boasting increased horsepower and torque thanks to their larger diameter tubes. Constructed from heavy duty 409 grade stainless steel material that’s mandrel bent for improved exhaust flow and constructed with CNC formed merge collectors that help reduce turbulence at higher rpm levels. They also feature O2 sensor bungs ready to accept factory or aftermarket oxygen sensors as well as adjustable band clamps that make installation easy! 

ProsCons
– Improved performance– May require additional modifications
– High-quality construction
– Customizable
– Better sound
– Improved fuel efficiency
– Dyno-tested performance gains

5. Flowtech 91700FLT Long Tube Headers

Flowtech 91700FLT Long Tube Headers
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Flowtech 91700FLT long tube headers provide better breathing capabilities for increased power output in your 602 crate engine swap. The 24″ equal length tubes increase exhaust velocity for improved performance while the thick flanges provide an air tight seal against exhaust gasses escaping away from the cylinder heads. Easy installation due to perfectly contoured tubes that fit without any hassles plus they come finished in a high heat resistant silver paint coating that resists rust and corrosion! 

ProsCons
– Improved performance– Installation can be challenging
– High-quality construction
– Customizable
– Better sound
– Improved fuel efficiency
– Increased exhaust scavenging

6. Hooker Blackheart 71222025-RHKR Long Tube Headers 

5. Hooker Blackheart 71222025-RHKR Long Tube Headers 
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Hooker Blackheart 71222025-RHKR long tube headers were developed based on years of racing experience on both street and track surfaces giving you an unbeatable combination of performance and dependability when used with your 602 crate motor swap project. Crafted from 304 stainless steel with large 2″ primaries leading into 3″ collectors these bad boys will deliver maximum horsepower gains while lasting much longer than standard aluminized models.

ProsCons
– Improved performance– May not be as street-friendly
– High-quality construction
– Customizable
– Better sound
– Improved fuel efficiency
– Dyno-tested performance gains

FAQ’s

A 602 crate engine is a high-performance engine that is used in racing cars. These engines are typically made from scratch, using aftermarket parts. As a result, they can vary significantly in terms of power and performance. However, most 602 crate engines are able to produce between 600 and 650 horsepower. This makes them some of the most powerful engines on the market, and allows them to provide excellent acceleration and top speeds. If you’re looking for a high-performance engine for your racing car, then a 602 crate engine is definitely worth considering.

The maximum rpm of a 602 crate motor is 6,500. This high-performance engine is designed for use in racing applications. It features a forged steel crankshaft, high-flow cylinder heads, and a high-lift camshaft. These components work together to produce exceptional power and torque. The 602 crate motor is capable of reaching speeds of up to 200mph. It is an excellent choice for those who want to take their racing to the next level.

There are many factors that can affect compression levels. These factors can include the type of engine, the age of the engine, the make and model of the car, and even the driving conditions. As a result, it is important to consult with a professional before making any decisions about compression levels. With that said, a 602 crate motor should ideally have between 9:1 and 10:1 compression. This will help to ensure that the engine is able to perform at its best and produce optimal power output.

A 602 crate engine is a type of performance engine typically used in race cars. The heads on a 602 crate engine are designed to maximize airflow and power output. Often, these heads are made from aluminum or other lightweight materials to reduce weight and improve performance. In addition, the heads on a 602 crate engine may feature larger valves and higher-lift camshafts to further improve airflow and power. As a result, a 602 crate engine can provide significant gains in power and performance over a stock engine.

How long a 602 crate engine lasts depends on a number of factors, including the quality of the engine and how it is maintained. In general, however, a 602 crate engine should last between 200 and 300 hours. Of course, if the engine is not properly maintained, it may not last as long. Regular oil changes and tune-ups are essential to keeping a 602 crate engine in good condition. By following these simple steps, you can help ensure that your engine has a long lifespan.

There are a few things to consider when making this determination. First, the size of the engine block itself is not always an accurate indicator of whether an engine is a big block or small block. Second, the 602 crate motor was designed for use in Chevrolet vehicles, which typically utilize small block engines. Finally, while the 602 crate motor may not be technically classified as a big block engine, it does offer many of the same benefits, including increased power and torque. As such, it can be a good choice for those who are looking for a big block performance from a small block engine.

There are many factors to consider when determining the most powerful crate engine. Engine size, displacement, and horsepower all play a role in determining an engine’s power output. In general, the larger the engine, the more power it is capable of producing. However, other factors such as forced induction (turbocharging or supercharging) can also significantly increase an engine’s power output. When considering all of these factors, it is clear that there is no definitive answer to the question of which is the most powerful crate engine. Instead, it is important to choose an engine that is well-suited to the specific application for which it will be used.

There are a few key differences between 602 and 604 crate motors. Firstly, the 602 has a smaller bore than the 604, meaning that it has a smaller displacement. This gives the 602 a shorter firing order, which can lead to problems with high-rpm performance. Secondly, the 602 uses a different rod ratio than the 604. This means that the connecting rods are of a different length, which can affect both torque and horsepower. Finally, the 604 uses better quality pistons than the 602, giving it an advantage in terms of both power and durability. Overall, the 604 is the better choice for most applications, but the decision ultimately comes down to personal preference and intended use.

What size cam is in a 602 crate motor? The answer may vary depending on the make and model of the vehicle, but typically, the 602 crate motor uses a cam with a diameter of .480-.490. This size cam is known for providing good power and torque, while still maintaining decent fuel economy. It is important to note that the 602 crate motor is not intended for use in vehicles that will be driven at high speeds or under strenuous conditions; if you plan to use your vehicle in such conditions, you should consult with a professional to determine the best cam size for your needs. Thank you for your question!