JE Pistons Chevrolet Small Block 4.125in Bore 1.062in CH -4.50 CC Piston Kit - Set Of 8

Smooth Crown Finish, Contact Reduction, Double Pin Oilers, Pin Fit, Vertical Gas Ports, and Ultra Groove. JE Auto Pistons are engineered, forged and machined 100% in the USA

Additional Information

4.125 in. Bore - 1.062 CD - (-4.50 cc) - 8 Cyl. Piston Kit

Part Type

Engine Piston Kit

• Contact Reduction: Reduce the amount of contact area against the cylinder wall when the piston "Rocks over". Contact reduction also serves to disrupt the flame travel into the crevice area causing a reduction in detonation.
• Designed specifically for Chevrolet 400 Small Block 13 Degree Engines. To provide optimized performance durability
• Double Pin Oilers: Deliver twice the amount of oil to the wrist pin as compared to the standard single pin oiler.
• Forged in the USA using 2618 aluminum, yielding high tensile strength needed for high-demand performance applications
• Includes high-quality wrist pins, and locks
• Made 100% in the USA
• Pin Fit: The pin bore is precision honed to attain an exact pin clearance. Clearances typically range from .0003 to .0010 between the wrist pin and pin bore.
• Proprietary Forged Side Relief (FSR) forging design minimizes friction and power loss with reduced skirt width and saves additional weight with a shorter wrist pin
• Smooth Crown Finish: Deburs all areas around the valve pocket and dome area, to reduces stress risers and prevent hot spots.
• Ultra Groove: Specialty ring groove machining process that provides near perfect groove flatness and surface finish. Tolerances are held to the millionths of an inch.
• Vertical Gas Ports: Machined gas ports channel combustion pressure behind the top ring for improved cylinder sealing and reduced blow-by under high load. Common in drag racing applications where maximum ring seal is critical.

Note for Pistons, Rings, Rotors, Rods and engine internals

Unless otherwise specified, some brands supply brake rotors, pistons, strut mounts, rods and rings separately. In some cases, titles may indicate plural, or 'set' - eg the term “ring set” often refers to the rings for a single piston only. If you’re unsure about what’s included with this product, please contact our team for clarification.

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Reference Information

Piston Kit, 13 SBC 400 - 4.125/.927/-4.5CC