Sealed Power H661CP40 Hypereutectic Piston Set — Fits Big Block Chevy 4.290 Bore

SKU: BDBR_H661CP40
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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 Sealed Power

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

Reliable Hypereutectic Pistons for Big Block Chevy

The Sealed Power H661CP40 piston set is engineered for enthusiasts who demand consistency and durability in their Big Block Chevy engines. Featuring a 4.290-inch bore, these hypereutectic pistons are built to withstand higher combustion pressures than standard cast alternatives. The specialized skirt coating minimizes friction, promoting smoother operation and extended engine life. Whether you are restoring a classic muscle car or building a reliable street engine, these pistons provide the stability and performance you need.

Technical Specifications

  • Bore Size: 4.290 inches for oversized cylinder applications.
  • Material: Hypereutectic aluminum alloy.
  • Ring Grooves: 5/64 x 5/64 x 3/16 inch.
  • Compression: Minus 2.00 cc dish volume.
  • Durability: Coated skirt to reduce cylinder wall wear.
  • Set Includes: 8 matching pistons.

Choosing the right piston is critical for engine longevity. Sealed Power is a trusted name in automotive engineering, and the H661CP40 series is no exception. These pistons offer excellent thermal management, which is vital for preventing ring land failure and maintaining optimal compression ratios. By utilizing a slightly larger bore, you can clean up worn cylinder walls and restore your engine's power output to like-new condition. For top-tier engine components and expert advice, look no further than GGCRACING.

Product Details

Product Description
Part Numbers
Sizing & Fit

About Sealed Power

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

Reliable Hypereutectic Pistons for Big Block Chevy

The Sealed Power H661CP40 piston set is engineered for enthusiasts who demand consistency and durability in their Big Block Chevy engines. Featuring a 4.290-inch bore, these hypereutectic pistons are built to withstand higher combustion pressures than standard cast alternatives. The specialized skirt coating minimizes friction, promoting smoother operation and extended engine life. Whether you are restoring a classic muscle car or building a reliable street engine, these pistons provide the stability and performance you need.

Technical Specifications

  • Bore Size: 4.290 inches for oversized cylinder applications.
  • Material: Hypereutectic aluminum alloy.
  • Ring Grooves: 5/64 x 5/64 x 3/16 inch.
  • Compression: Minus 2.00 cc dish volume.
  • Durability: Coated skirt to reduce cylinder wall wear.
  • Set Includes: 8 matching pistons.

Choosing the right piston is critical for engine longevity. Sealed Power is a trusted name in automotive engineering, and the H661CP40 series is no exception. These pistons offer excellent thermal management, which is vital for preventing ring land failure and maintaining optimal compression ratios. By utilizing a slightly larger bore, you can clean up worn cylinder walls and restore your engine's power output to like-new condition. For top-tier engine components and expert advice, look no further than GGCRACING.

Product Details

Product Description

About Sealed Power

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

Reliable Hypereutectic Pistons for Big Block Chevy

The Sealed Power H661CP40 piston set is engineered for enthusiasts who demand consistency and durability in their Big Block Chevy engines. Featuring a 4.290-inch bore, these hypereutectic pistons are built to withstand higher combustion pressures than standard cast alternatives. The specialized skirt coating minimizes friction, promoting smoother operation and extended engine life. Whether you are restoring a classic muscle car or building a reliable street engine, these pistons provide the stability and performance you need.

Technical Specifications

  • Bore Size: 4.290 inches for oversized cylinder applications.
  • Material: Hypereutectic aluminum alloy.
  • Ring Grooves: 5/64 x 5/64 x 3/16 inch.
  • Compression: Minus 2.00 cc dish volume.
  • Durability: Coated skirt to reduce cylinder wall wear.
  • Set Includes: 8 matching pistons.

Choosing the right piston is critical for engine longevity. Sealed Power is a trusted name in automotive engineering, and the H661CP40 series is no exception. These pistons offer excellent thermal management, which is vital for preventing ring land failure and maintaining optimal compression ratios. By utilizing a slightly larger bore, you can clean up worn cylinder walls and restore your engine's power output to like-new condition. For top-tier engine components and expert advice, look no further than GGCRACING.

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