JE 258204S Piston Single (4.280 in. Bore, 1.648 in. CH, 33.00 CC) for CHEVROLET Big Block Engine

Description JE 258204S Piston Single (4.280 in. Bore, 1.648 in. CH, 33.00 CC) for CHEVROLET Big Block Engine

JE Pistons applies over 75 years of experience to its range of premium forged racing pistons for European, import, and sport compact applications.

Engineered, forged, and machined 100% in the USA, these pistons are Designed for each specific engine and racing application to provide durability and performance.

• Forged from 4032 aluminum for tensile strength and minimal thermal expansion
• Proprietary Forged Side Relief design minimizes friction and power loss while reducing skirt width, weight, and Wrist Pin length
• Application-dependent skirt coating reduces friction, piston skirt and cylinder Wall wear, and operating noise
• Application-dependent accumulator groove reduces combustion gas pressure and Piston Ring flutter while improving ring seal

Specifications:

• Piston Series: JE Pistons
• Cylinder Head: CLOSED CHMBR
• Bore Diameter: 4.280 IN
• Piston Head Type: Dome
• Compression Height: 1.648 IN
• Piston Volume: 33.00 CC
• Piston Material: 2618
• Piston Quantity: 1
• Forging Type: Round
• Piston Average Weight: 645 GR
• Ring Set Included: No
• Top Compression Ring Thickness: 0.0640 IN
• Second Compression Ring Thickness: 0.0640 IN
• Oil Ring Thickness: 0.188 IN
• Wrist Pin Outer Diameter: 0.990 IN
• Wrist Pin Length: 2.930 IN
• Wrist Pin Wall Thickness: 0.150 IN