SRP Flat Top Forged Piston Set 4.155 Bore -5cc Small Block Chevy SRP138097

If you're building a high-compression Small Block Chevy engine or refreshing one that's seen serious track time, piston quality directly impacts reliability and power output. These SRP forged pistons are engineered from high-silicon 4032 aluminum to handle the thermal stress and detonation pressures of aggressive street and strip applications. With forced pin oiling and precision ring grooves, they deliver the durability and consistent performance you need when every combustion cycle counts.

• Material: 4032 aluminum alloy, forged
• Engine: Small Block Chevy
• Bore: 4.155 inches
• Displacement: 407 cubic inches
• Dome Volume: -5.0cc
• Compression Ratio (58cc): 12.5:1
• Compression Ratio (64cc): 11.6:1
• Compression Ratio (70cc): 10.8:1
• Rod Length: 5.700 inches
• Stroke: 3.750 inches
• Compression Height: 1.425 inches
• Weight per Piston: 501 grams
• Ring Grooves: 1/16, 1/16, 3/16 inch
• Pin Oiling: Forced lubrication
• Oversize: +0.030 inch
• Quantity: Set of eight
• Part Number: SRP138097
• Recommended Rings: S100S8-4155-5