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402ci Closed Chamber Head Forged Piston Bore: 4.185" (+.060")
Product Discontinued
SEALED POWERPART NUMBER: 844-L2328NF60-1

402ci Closed Chamber Head Forged Piston Bore: 4.185" (+.060")

Currently Unavailable

This product is no longer available. Please call customer service for assistance at 1-800-345-4545.

Race Pistons
    402ci Closed Chamber Head Forged Piston
  • Bore: 4.185" (+.060")
  • Piston Top: 36.60cc Dome
  • Press Fit Pin
  • Comp Ratio: 10.81:1 w/106.9cc Heads, 10.53:1 w/109.4cc Heads
  • Ring Grooves: 5/64", 5/64", 3/16"
  • Sold as Each
    Speed-Pro developed powerforged pistons and set the pace in powerforged technology. The high silicon VMS-75 alloy is found exclusively in pistons "powerforged" by Speed-Pro. Up to 3,000 tons of force forges aluminum slugs into the basic piston form which creates a grain flow pattern in the structure providing excellent strength, ductility and improved heat dissipation.

    Please Note: All compression ratios are figured with a gasket thickness representative of those commonly used and are approximate.

Part TypePiston
Product LineSpeed-Pro Powerforged Big Block Chevy Pistons
BrandSEALED POWER
Package Height3.0
Package Width4.5
Package Length4.5
Weight1.9 PG
Part CategoryPerformance Parts
Package Qty1
Package TypeEA
Some parts are not legal for use in California or other states with similar laws / regulations
p65 warning