JE Pistons Chevrolet Small Block Stock Car 4.060in Bore 1.250 CD Flat Top -3.8cc - Set of 8

Smooth Crown Finish, Contact Reduction, Dual Velocity Gas Ports, and Pin Fit. JE Auto Pistons are engineered, forged and machined 100% in the USA

Additional Information

4.060 in. Bore, 1.250 CD, Flat Top, -3.8 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.
• Custom Level Features: Smooth Crown Finish-Deburs all areas around the valve pocket and dome area to reduces stress risers and prevent hot spots.
• Designed specifically for 23 Degree Small Block Chevy Engines To provide optimized performance durability
• Dual Velocity Gas Ports-combination of both lateral and vertical gas ports, providing the advantages of both. DVGP's provide positive gas pressure to the back side of the top ring w/out the carbon buildup of the traditional vertical style.
• 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
• Standard Features:Forged in the USA using 2618 aluminum, yielding high tensile strength needed for high-demand performance applications

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, LIGHTWEIGHT STOCK CAR 2/4 BARREL