Air Flow Research Magnum Comp CNC 385cc 121cc Aluminum Cylinder Heads — Fits Big Block Chevy (Pair)

SKU: GBMK_2020-TI
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Command the Track with AFR Magnum Comp CNC 385cc BBC ...Read More

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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
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Sizing & Fit

Command the Track with AFR Magnum Comp CNC 385cc BBC Heads

For the most demanding Big Block Chevy applications, the Air Flow Research (AFR) Magnum Comp CNC 385cc Aluminum Cylinder Heads stand as the pinnacle of performance engineering. These fully assembled heads are meticulously CNC-ported to deliver an astonishing volume of airflow, making them the ultimate choice for professional racers and extreme high-horsepower builds. Unlock the full, untapped potential of your BBC engine with these competition-grade cylinder heads.

Maximum Airflow Through Advanced CNC Technology

The Magnum Comp CNC 385cc heads are designed for engines that crave maximum airflow. The colossal 385cc intake runners are precisely CNC-machined to optimize every aspect of the port, ensuring laminar flow and incredible velocity. Paired with 121cc combustion chambers, these heads provide the ideal environment for generating monumental horsepower and torque. The lightweight, high-strength aluminum construction guarantees durability under the most severe racing conditions while contributing to a lighter overall engine package.

Key Features & Benefits:

  • Extreme Airflow: Massive 385cc CNC-ported intake runners for unparalleled flow and power.
  • Optimized Combustion: 121cc combustion chambers designed for maximum efficiency and power generation.
  • Premium Construction: Lightweight and robust aluminum casting for superior strength and thermal management.
  • High-Performance Valvetrain: Equipped with oversized 2.350" intake and 1.880" exhaust valves for ultimate flow.
  • Assembled & Ready: Includes heavy-duty 1.625" valve springs and angle plugs, ready for installation.
  • Big Block Chevy Dominance: Specifically engineered for the most powerful BBC engine builds.

Why Choose AFR Magnum Comp CNC 385cc Heads?

When you're pushing the limits of your Big Block Chevy, every component must perform flawlessly. The AFR Magnum Comp CNC 385cc cylinder heads are built for exactly that purpose. Their superior design and manufacturing ensure consistent, repeatable performance, giving you the edge on the track or dyno. These heads are not just an upgrade; they are a statement of intent for serious power. Elevate your BBC to a championship level with these exceptional heads, available at GGCRACING.

Product Details

Product Description
Part Numbers
Sizing & Fit

Command the Track with AFR Magnum Comp CNC 385cc BBC Heads

For the most demanding Big Block Chevy applications, the Air Flow Research (AFR) Magnum Comp CNC 385cc Aluminum Cylinder Heads stand as the pinnacle of performance engineering. These fully assembled heads are meticulously CNC-ported to deliver an astonishing volume of airflow, making them the ultimate choice for professional racers and extreme high-horsepower builds. Unlock the full, untapped potential of your BBC engine with these competition-grade cylinder heads.

Maximum Airflow Through Advanced CNC Technology

The Magnum Comp CNC 385cc heads are designed for engines that crave maximum airflow. The colossal 385cc intake runners are precisely CNC-machined to optimize every aspect of the port, ensuring laminar flow and incredible velocity. Paired with 121cc combustion chambers, these heads provide the ideal environment for generating monumental horsepower and torque. The lightweight, high-strength aluminum construction guarantees durability under the most severe racing conditions while contributing to a lighter overall engine package.

Key Features & Benefits:

  • Extreme Airflow: Massive 385cc CNC-ported intake runners for unparalleled flow and power.
  • Optimized Combustion: 121cc combustion chambers designed for maximum efficiency and power generation.
  • Premium Construction: Lightweight and robust aluminum casting for superior strength and thermal management.
  • High-Performance Valvetrain: Equipped with oversized 2.350" intake and 1.880" exhaust valves for ultimate flow.
  • Assembled & Ready: Includes heavy-duty 1.625" valve springs and angle plugs, ready for installation.
  • Big Block Chevy Dominance: Specifically engineered for the most powerful BBC engine builds.

Why Choose AFR Magnum Comp CNC 385cc Heads?

When you're pushing the limits of your Big Block Chevy, every component must perform flawlessly. The AFR Magnum Comp CNC 385cc cylinder heads are built for exactly that purpose. Their superior design and manufacturing ensure consistent, repeatable performance, giving you the edge on the track or dyno. These heads are not just an upgrade; they are a statement of intent for serious power. Elevate your BBC to a championship level with these exceptional heads, available at GGCRACING.

Product Details

Product Description

Command the Track with AFR Magnum Comp CNC 385cc BBC Heads

For the most demanding Big Block Chevy applications, the Air Flow Research (AFR) Magnum Comp CNC 385cc Aluminum Cylinder Heads stand as the pinnacle of performance engineering. These fully assembled heads are meticulously CNC-ported to deliver an astonishing volume of airflow, making them the ultimate choice for professional racers and extreme high-horsepower builds. Unlock the full, untapped potential of your BBC engine with these competition-grade cylinder heads.

Maximum Airflow Through Advanced CNC Technology

The Magnum Comp CNC 385cc heads are designed for engines that crave maximum airflow. The colossal 385cc intake runners are precisely CNC-machined to optimize every aspect of the port, ensuring laminar flow and incredible velocity. Paired with 121cc combustion chambers, these heads provide the ideal environment for generating monumental horsepower and torque. The lightweight, high-strength aluminum construction guarantees durability under the most severe racing conditions while contributing to a lighter overall engine package.

Key Features & Benefits:

  • Extreme Airflow: Massive 385cc CNC-ported intake runners for unparalleled flow and power.
  • Optimized Combustion: 121cc combustion chambers designed for maximum efficiency and power generation.
  • Premium Construction: Lightweight and robust aluminum casting for superior strength and thermal management.
  • High-Performance Valvetrain: Equipped with oversized 2.350" intake and 1.880" exhaust valves for ultimate flow.
  • Assembled & Ready: Includes heavy-duty 1.625" valve springs and angle plugs, ready for installation.
  • Big Block Chevy Dominance: Specifically engineered for the most powerful BBC engine builds.

Why Choose AFR Magnum Comp CNC 385cc Heads?

When you're pushing the limits of your Big Block Chevy, every component must perform flawlessly. The AFR Magnum Comp CNC 385cc cylinder heads are built for exactly that purpose. Their superior design and manufacturing ensure consistent, repeatable performance, giving you the edge on the track or dyno. These heads are not just an upgrade; they are a statement of intent for serious power. Elevate your BBC to a championship level with these exceptional heads, available at GGCRACING.

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