4.125-Inch Bore Dish Top Pistons SB-Chevy

Name: 4.125-Inch Bore Dish Top Pistons SB-Chevy
Brand: MANLEY
SKU: 660-593800-8
Price: 879.16 USD
Availability: InStock

^$879¹⁶

Ships on 09/04/2026

Lowest Price Guarantee

Dome Pistons

Gas Ported .043'', .043'', 3mm Ring Grooves

6.000'' Rod Length with 4.000'' Stroke

6.125'' Rod Length with 3.750'' Stroke

SB-Chevy
Dome 4cc
4.125'' Bore
6.000'' Rod Length w/4.000'' Stroke
6.125'' Rod Length w/3.750'' Stroke
1.000'' Comp. Height
.043'', .043'', 3mm Ring Grooves
8/pkg.

Technical Specs:
Compression Height: 1.000'
Compression Ratio: 13.5:1 w/ 64cc Combustion Chamber & 4.000' Stroke
Piston & Pin Weight: 557 grams
Dome Top: 4.0cc
Pin Size: 0.927' dia., 2.450' long, .150' 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: .310' Intake, .200' 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.

Features:

Based on Standard 4.125'' bore block
23° Head Applications
2618 High Strength Alloy
Lightweight Design
Gas Ported .043'', .043'', 3mm Ring Grooves
Thick deck for high horsepower applications
Round Wire Locks Included
Pressure Balance Groove
Perfect Ring Groove to Skirt Squareness
.927'' Dia. x 2.450'' Long x .150'' Wall Premium Chrome Moly Wrist Pin

Piston Common Specs:
Compression Ratio: 10.3:1 w/ 64cc Combustion Chamber & 4.000'' Stroke
Dome Volume: 11.0cc Symmetrical Dome
Crown Thickness: .200''
Ring Thickness: Top Ring - .043'' Gas Ported (.200'' down); Second Ring - .043''; Oil Ring - 3mm
Valve Notches: .310'' Intake, .200'' Exhaust
Maximum Valve Sizes: 2.125'' Intake, 1.650'' Exhaust
Maximum Fly Cut: .360'' Intake, .260'' Exhaust
Valve Angle: 22°
Pin Included: Premium Chrome Moly .927'' dia., 2.450'' long, .150'' 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 4.160'' head gasket I.D. with a .040'' compressed thickness.