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- Ultra Lite ''Formula-Won'' Piston
- SB-Chevy
- Dish Top -14.5cc
- 4.040'' Bore (+.040'')
- 6.000'' Rod Length
- 3.480-3.500'' Stroke
- 1.250'' Comp. Height
- Right Side, 1/pkg.
Technical Specs: - Compression Height: 1.250'
- Piston & Pin Weight: 457 grams
- Dish Top: -14.5cc
- Pin Size: 0.927' dia, 2.300' long, .095' wall
- Round Wire Locks: .061'
- Ring Grooves: .043' Top; .043' Middle; 3mm Bottom
- Piston Clearance: .005' measured 1.100' from bottom of the oil ring
- Valve Notches: .300' Intake, .215' 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:
- Based on Standard 4.000'' bore block
- 23° Head Applications
- 2618 High Strength Alloy
- Super Lightweight Design for 525 HP and 8,000 RPM
- Lateral Gas Ports Included
- Round Wire Locks Included
- Pressure Balance Groove
- Perfect Ring Groove to Skirt Squareness
- .927'' Dia. x 2.300'' Long x .095'' Wall Premium Chrome Moly Wrist Pin
Piston Common Specs: - Compression Ratio: 9.3:1 w/ 64cc Combustion Chamber & 3.48'' Stroke
- Dome Volume: -14.5cc (Flat Top)
- Crown Thickness: .155''
- Ring Thickness: Top Ring - .043'' (.155'' down); Second Ring - .043''; Oil Ring - 3mm
- Valve Notches: .300'' Intake, .215'' Exhaust
- Maximum Valve Sizes: 2.125'' Intake; 1.650'' Exhaust
- Valve Angle: 22°
- Pin Included: Premium Chrome Moly .927'' dia, 2.300'' long, .095'' 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.
![Engine Assembly Lube [4 oz. Bottle]](https://www.jegs.com/images/mini_200/500/555/555-28000.jpg)





