ATK NORTH AMERICA HP89 Engine 653517265105 355

( Brand: Atk North America ), ( Manufacturer Part Number: HP89 ), ( Type: Engine Block Long ), ( UPC: 653517265105 ), ( Engine Size: 5.7 L ), ( Number Of Valves: 16 ), ( California Prop 65 Warning: This Product Can Expose You To Chemicals Including Chromium, Which Are Known To The State Of California To Cause Birth Defects Or Other Reproductive Harm. ), ( Fuel Type: Gasoline )

Review ATK NORTH AMERICA Fits For Chevy 355 Perf Engine

The ATK North HP89 is a high-performance cylinder head specifically designed for Chevy 355 engines. This cylinder head is engineered to deliver increased power and torque, making it an excellent choice for racers and enthusiasts looking to maximize the potential of their 355 engine.

The ATK North HP89 features a 2.02/1.60-inch intake and exhaust valve combination. The intake valves are made of titanium, while the exhaust valves are made of stainless steel. These materials offer superior strength and durability, allowing the head to withstand the rigors of high-performance use.

The combustion chamber design of the ATK North HP89 is optimized for maximum fuel burn and efficient airflow. The head includes a large, 62cc combustion chamber and a high-performance, 11:1 compression ratio. These features help to increase power output and improve engine efficiency.

The ATK North HP89 also includes a number of other performance-enhancing features. It has a CNC-machined deck surface for improved sealing and increased cylinder pressure. The head also includes a high-performance, roller camshaft and roller lifters, which help to reduce friction and improve valve control.

The ATK North HP89 is designed to work with a variety of different intake and exhaust systems, making it a versatile choice for 355 engine builders. It is also CNC-machined from 4130 forged aluminum, ensuring a precise fit and excellent heat dissipation. The head comes fully balanced and ready to install, making it a convenient choice for those looking to upgrade their engine.

In summary, the ATK North HP89 is a top-performing cylinder head designed specifically for Chevy 355 engines. Its titanium intake valves, stainless steel exhaust valves, large combustion chamber, high-performance camshaft, and CNC-machined construction make it an excellent choice for those looking to extract every last bit of power from their 355 engine.

The ATK North Hp89 is a performance intake manifold designed for Chevy 355 engines. This intake manifold is known for its high-performance design and ability to provide better airflow and fuel mixture to the engine. Here are some pros and cons of buying a ATK North Hp89 intake manifold for your Chevy 355 engine:

1. High-Performance Design: The ATK North Hp89 intake manifold is designed to provide better airflow and fuel mixture to the engine. Its high-performance design helps to increase engine power and torque.

2. Improved Fuel Economy: The improved airflow and fuel mixture can lead to better fuel economy. This is because the engine runs more efficiently when it receives the right amount of fuel and air.

3. Enhanced Engine Sound: The intake manifold also enhances the engine sound, giving your Chevy 355 engine a more aggressive and powerful sound.

4. Easy Installation: The intake manifold comes with all the necessary hardware for installation, making it a relatively easy process for most DIY enthusiasts.

5. Durable Construction: The ATK North Hp89 intake manifold is made of high-quality materials and is built to last. It is designed to withstand the rigors of high-performance driving.

1. Expensive: The ATK North Hp89 intake manifold is a high-performance aftermarket part, and it comes with a premium price tag. It may not be within everyone's budget.

2. Requires Tuning: Installing the ATK North Hp89 intake manifold may require tuning to ensure that the engine runs properly. This can add to the cost and complexity of the installation process.

3. May Not Fit All Applications: The ATK North Hp89 intake manifold is designed specifically for Chevy 355 engines. It may not fit other engines or applications, so it's essential to ensure compatibility before making a purchase.

4. Potential for Leaks: As with any intake manifold, there is a potential for leaks. Proper installation and sealing of the intake manifold are crucial to prevent leaks and maintain engine performance.

In conclusion, the ATK North Hp89 intake manifold is a high-performance aftermarket part that can provide significant power gains, improved fuel economy, and an enhanced engine sound for your Chevy 355 engine. However, it comes with a premium price tag, requires tuning, and may not fit all applications. If you are looking for a high-performance intake manifold for your Chevy 355 engine and have the budget for it, then the ATK North Hp89 intake manifold is an excellent choice. If you are on a budget or are not ready for the complexity of the installation process, then you may want to consider other options. Ultimately, the decision to buy the ATK North Hp89 intake manifold depends on your individual needs, budget, and performance goals.

Details:

CHEVY 355 PERF ENGINE,:: Automotive. This 350 is cranking out 375 Horsepower/415 Torque, comes equipped with American Made Dart or Pro-Filer Aluminum Heads and a Hydraulic Roller Cam/Lifters. Note: Photos do not always represent the actual product. For kits, photo might show entire kit and listing is only for one component.

part #: hp89 price

• $4104.99

specifications grokengines:

• for makes: Chevy
• brand: Atk North America
• mpn: Hp89
• type: Engine Block Long
• upc: 653517265105
• engine size: 5.7 L
• number of valves: 16
• california prop 65 warning: This Product Can Expose You To Chemicals Including Chromium, Which Are Known To The State Of California To Cause Birth Defects Or Other Reproductive Harm.
• fuel type: Gasoline

offer grokengines:

• sold: 0
• started: June 11, 2025
• availability: In Stock
• quantity: 2
• options: Ship-to-home

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• # reviews: 81351
• city: USA
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• condition: New
• Car Truck Parts Accessories > Engines Engine Parts > Engines

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