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- BB-Chevy Flat Top Piston
- 4.500'' Bore
- 541ci - 6.135'' Rod w/4.250'' Stroke (Std Deck)
- 541ci - 6.535'' Rod w/4.250'' Stroke (Tall Deck)
- 1.520'' Comp. Height
- 1/pkg.
Technical Specs: - Compression Ratio (4.500' Bore x 4.250' Stroke): 9.6:1 (112cc); 9.2:1 (118cc); 8.8:1 (124cc)
- Compression Height: 1.520'
- Piston Weight: 676 grams
- Flat Top: -3.0cc valve relief
- Pin Size: 0.990' dia, 2.930' long, .180' wall (170 grams)
- Spiral Locks: .042' wide (4 per piston)
- Ring Grooves: 1/16' Top; 1/16' Middle; 3/16' Bottom
- Piston Clearance: .006' measured 1.100' from bottom of the oil ring
- Valve Notch: .300' Intake
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:
- Based on Standard 4.500'' Bore Cylinder Block
- Lightweight Design
- 2618 High Strength Alloy
- 1/16'', 1/16'', 3/16'' Ring Grooves
- Perfect Ring Groove to Skirt Squareness
- Spiral Locks Included - .042'' wide (4 per piston)
- Pressure Balance Groove
- Premium Chrome Moly Wrist Pin .990'' Dia. x 2.930'' Long x .180'' Wall
- Suitable for Superchargers, Turbos, Nitrous
Piston Common Specs: - Dome Volume: -3.0cc (Flat Top)
- Crown Thickness: .250''
- Ring Thickness: Top Ring - 1/16'' (.350'' down); Second Ring - 1/16''; Oil Ring - 3/16''
- Intake Valve Notch: .300''
- Pin Included: Premium Chrome Moly .990'' dia, 2.930'' long, .180'' wall
- Spiral Locks: .042'' wide (4 per piston)
- Recommended Piston Clearance: .006'' measured 1.100'' from bottom of the oil ring
Technical Note: - Standard Deck = 9.8'' Deck Height; Tall Deck = 10.2'' Deck Height






