Manley Small Block Chevy ''4 Barrel Class'' Flat Top Pistons

Features:

• Designed for 4 Barrel Class Racing
• Based on Standard 4.000'' bore block
• 23° Head Applications
• Lightweight Design
• Slightly thicker deck (.185'') for higher horsepower applications
• 2618 High Strength Alloy
• 1/16'', 1/16'', 3/16'' Ring Grooves or Gas Ported .043'', .043'', 3mm Ring Grooves
• Perfect Ring Groove to Skirt Squareness
• Round Wire Locks Included
• Pressure Balance Groove
• Full Banded Skirt design for Increased Skirt Stability
• .927'' Dia. x 2.300'' Long x .130'' Wall Premium Chrome Moly Wrist Pin

   

  Piston Common Specs:
• Flat Top Compression Ratio: 10.4:1 w/ 64cc Combustion Chamber & 3.48'' Stroke
• Dome Volume: -4.0cc (Flat Top)
• Crown Thickness: .185''
• Ring Thickness: Top Ring - 1/16'' or .043'' Gas Ported (.155'' down); Second Ring - 1/16'' or .043''; Oil Ring - 3/16'' or 3mm
• Valve Notches: .300'' Intake, .190'' Exhaust
• Maximum Fly Cut: .360'' Intake, .260'' Exhaust
• Maximum Valve Sizes: 2.125'' Intake; 1.650'' Exhaust
• Valve Angle: 22°
• Pin Included: Premium Chrome Moly .927'' dia, 2.300'' long, .130'' wall
• Round Wire Locks: .061'' wide
• Recommended Piston Clearance: .005'' measured 1.100'' from bottom of the oil ring

   

  Technical Note: Compression ratios are calculated at .005'' deck clearance, a 4.060'' head gasket I.D. with a .040'' compressed thickness.