
4 Barrel Class Piston SB-Chevy
- 4 Barrel Class Piston
- SB-Chevy
- Flat Top -4.0cc
- 4.040'' Bore (+.040'')
- 5.700'' Rod Length with 3.480-3.500'' Stroke
- 1.550'' Comp. Height
- .043'', .043'', 3mm Ring Grooves
- Right Side, 1/pkg.
Technical Specs: - Compression Height: 1.550'
- Piston & Pin Weight: 555 grams
- Flat Top: -4.0cc valve reliefs
- Pin Size: 0.927' dia, 2.300' long, .130' wall
- Round Wire Locks: .061'
- Ring Grooves: Gas Ported .043' Top; .043' Middle; 3mm Bottom
- Piston Clearance: .005' measured 1.100' from bottom of the oil ring
- Valve Notches: .300' Intake, .190' Exhaust
Platinum Series Pistons
Professional engine builders and elite tuners around the world are running Manley pistons for some very good reasons. Manley uses domestic 2618 high strength alloy forgings and unique (to Manley) fixturing allowing skirt turning / ring groove machining be performed in one single operation to ensure the ultimate ring groove to skirt squareness for better ring seal. Cam and barrel (skirt) profiles that make power but are friendly on the cylinder walls. Manley is well known for their high quality valvetrain components, but insiders also trust and use Manleys top quality pistons and connecting rods.
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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.




