Holley EFI Cam Sync Kit 12mm Flying Magnet — Fits Big Block Chevy +.400 Raised Cam

SKU: GVMR_556-120
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About Holley EFI Holley EFI engineers high-quality automotive parts and ...Read More

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Sale price$340.15
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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
Part Numbers
Sizing & Fit

About Holley EFI

Holley EFI engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Holley EFI lineup with fast shipping and expert fitment support — order with confidence.

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Engineered for BBC +.400 Raised Cam Applications

Achieve professional-grade engine management with the Holley EFI Cam Sync Kit, tailored specifically for Big Block Chevy engines with a +0.400 inch raised camshaft. This kit provides the necessary hardware to ensure your EFI system has an accurate cam position reference, which is critical for sequential fuel injection and individual cylinder timing strategies.

Technical Advantages

  • Custom bracket for +0.400 raised cam BBC
  • Reliable 12mm x 1.00 flying magnet sensor
  • Consistent signal output for high-RPM stability
  • Simplifies sequential EFI installation
  • High-durability components for racing

When you build a Big Block Chevy with a raised cam, standard timing components often won't fit or provide the necessary signal clarity. This Holley EFI kit solves that problem by providing a purpose-built bracket and sensor assembly that aligns perfectly with your engine's geometry. The flying magnet technology ensures that the sensor receives a clean trigger signal every time, allowing your ECU to manage fuel and spark with absolute precision. This level of control is vital for maximizing horsepower and protecting your engine from detonation or timing-related issues. Whether you are running a naturally aspirated monster or a forced-induction powerhouse, this cam sync kit provides the foundation for a rock-solid tune. Upgrade your BBC build with the best in engine management technology. Find all the performance parts you need to dominate the track at GGCRACING.

Product Details

Product Description
Part Numbers
Sizing & Fit

About Holley EFI

Holley EFI engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Holley EFI lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Engineered for BBC +.400 Raised Cam Applications

Achieve professional-grade engine management with the Holley EFI Cam Sync Kit, tailored specifically for Big Block Chevy engines with a +0.400 inch raised camshaft. This kit provides the necessary hardware to ensure your EFI system has an accurate cam position reference, which is critical for sequential fuel injection and individual cylinder timing strategies.

Technical Advantages

  • Custom bracket for +0.400 raised cam BBC
  • Reliable 12mm x 1.00 flying magnet sensor
  • Consistent signal output for high-RPM stability
  • Simplifies sequential EFI installation
  • High-durability components for racing

When you build a Big Block Chevy with a raised cam, standard timing components often won't fit or provide the necessary signal clarity. This Holley EFI kit solves that problem by providing a purpose-built bracket and sensor assembly that aligns perfectly with your engine's geometry. The flying magnet technology ensures that the sensor receives a clean trigger signal every time, allowing your ECU to manage fuel and spark with absolute precision. This level of control is vital for maximizing horsepower and protecting your engine from detonation or timing-related issues. Whether you are running a naturally aspirated monster or a forced-induction powerhouse, this cam sync kit provides the foundation for a rock-solid tune. Upgrade your BBC build with the best in engine management technology. Find all the performance parts you need to dominate the track at GGCRACING.

Product Details

Product Description

About Holley EFI

Holley EFI engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Holley EFI lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Engineered for BBC +.400 Raised Cam Applications

Achieve professional-grade engine management with the Holley EFI Cam Sync Kit, tailored specifically for Big Block Chevy engines with a +0.400 inch raised camshaft. This kit provides the necessary hardware to ensure your EFI system has an accurate cam position reference, which is critical for sequential fuel injection and individual cylinder timing strategies.

Technical Advantages

  • Custom bracket for +0.400 raised cam BBC
  • Reliable 12mm x 1.00 flying magnet sensor
  • Consistent signal output for high-RPM stability
  • Simplifies sequential EFI installation
  • High-durability components for racing

When you build a Big Block Chevy with a raised cam, standard timing components often won't fit or provide the necessary signal clarity. This Holley EFI kit solves that problem by providing a purpose-built bracket and sensor assembly that aligns perfectly with your engine's geometry. The flying magnet technology ensures that the sensor receives a clean trigger signal every time, allowing your ECU to manage fuel and spark with absolute precision. This level of control is vital for maximizing horsepower and protecting your engine from detonation or timing-related issues. Whether you are running a naturally aspirated monster or a forced-induction powerhouse, this cam sync kit provides the foundation for a rock-solid tune. Upgrade your BBC build with the best in engine management technology. Find all the performance parts you need to dominate the track at GGCRACING.

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