Manley Chevrolet LS Piston Set - 4.065in Bore 1.115in CH, -18.00 CC

Manley pistons are machined of high strength 2618 material. Lightweight yet robust, they ensure long service life. Perfect ring groove to skirt squareness is achieved through a unique 'one fixturing' manufacturing method for maximum horsepower. They feature a proven offset wrist pin design, a 1.5, 1.5, 3mm land, and moly-coated skirts. Roundwire locks, tool steel wrist pins, and pressure balance grooves are included. Compression ratios are calculated at 0.00' deck clearance, a 9.240' deck height, and a .042' thick compressed head gasket. Piston rings are purchased separately. Compression Ratio 10.4:1 with 64cc heads; 10.2:1 with 66cc heads.