Wiseco K492B105 BBC Quick Forged Piston Solid Dome CH Bore - 8 Kit 6cc 1.065in 4.605in

The Wiseco K492B105 is a Professional Series "Quick 8" forged piston kit engineered for Big Block Chevrolet 582 cubic inch engines running 12–14 degree cylinder heads. Featuring a 4.605 in. bore, 1.065 in. compression height, and a +6cc solid dome, these pistons deliver a high 17.0:1 compression ratio and are purpose-built for serious naturally aspirated and nitrous-assisted race applications.

Forged and machined in the USA from 2618 high-strength aluminum alloy, the K492B105 offers superior tensile strength and durability under extreme heat and pressure. The solid dome can be machined down to a flat top configuration, providing flexibility for different compression targets.

Key Features:

• Bore: 4.605 in. (oversize +0.005 in.)
• Compression Height: 1.065 in.
• Dome Volume: +6cc solid dome (cuttable to flat top)
• Wrist Pin: 0.990 in. diameter x 2.930 in. (Pin #S726, included)
• Ring Land: Top .257 in., 2nd .140 in. — accepts .043/.043/3.0mm rings (sold separately)
• Skirt Type: Strutted with ArmorGlide® coating for seizure resistance, friction reduction, and quieter operation
• Vertical gas ports for improved ring seal
• Anti-detonation and pressure seal grooves
• .180 in. toolsteel wall wrist pin with double Spirolox® retainers
• Engineered for 12–14 degree cylinder head applications
• Suitable for naturally aspirated and nitrous-assisted builds

Rings are sold separately. The Wiseco K492B105 Quick 8 piston kit is an ideal shelf-stock solution for builders seeking proven, race-grade forged pistons for high-compression Big Block Chevy 582 builds without the lead time of a custom order.