Manley 697630-8 Big Block Chevy Hollow Dome Pistons 4.530" Bore 1.245" CD 42cc

The Manley 697630-8 Platinum Series pistons are engineered for high-performance Big Block Chevy applications demanding exceptional strength and reliability. These forged pistons feature a 4.530" bore diameter with a 1.245" compression distance and a 42cc hollow dome design, making them ideal for +.030" overbore builds in both standard deck (516ci with 6.535" rod and 4.000" stroke) and tall deck (580ci with 6.700" rod and 4.500" stroke) configurations.

Key Features:

• Forged from 2618 high-strength aluminum alloy for extreme durability in power-adder and nitrous applications
• Hollow dome construction reduces weight while maintaining structural integrity
• Full banded skirt design provides increased skirt stability and strength
• Perfect ring groove to skirt squareness achieved through precision one-operation fixturing
• Lateral gas ports included for improved ring sealing
• Round wire locks and tool steel wrist pins included
• .043" x .043" x 3/16" ring package

Manley's proprietary multi-step top ring groove machining process ensures optimal control of groove size, geometry, flatness, and finish for maximum sealing efficiency. Perfect for drag race and high-horsepower street applications.