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350ci Stock Type Piston, .030" Overbore Piston Dia.: 4.030"
Product Discontinued
SEALED POWERPART NUMBER: 844-L2256F30-1

350ci Stock Type Piston, .030" Overbore Piston Dia.: 4.030"

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

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Small Block Chevy Stock-Type Pistons
    350ci Stock Type Piston, .030'' Overbore
  • Piston Dia.: 4.030''
  • Piston Top: Flat Top, 4-Valve Reliefs
  • Pressed Pin
  • Comp Ratio: 10.4:1 w/58cc Head, 9.72:1 w/64cc Head
  • Ring Grooves: 5/64'', 5/64'', 3/16''
  • Sold 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 heat dissipation.

    Note: All compression ratios are approximate. They're figured with a gasket thickness representative of those commonly used.

Part TypePiston
Product LineSpeed-Pro Powerforged Small Block Chevy Pistons
BrandSEALED POWER
Package Height4.5
Package Width4.5
Package Length4.8
Weight1.75 PG
Part CategoryPerformance Parts
Piston Head Volume (Cc)6.1
Compression Distance1.563 in (39.7 mm)
Piston Ring Thickness (In.)5/64 x 5/64 x 3/16
Wrist Pin StylePress-fit
QuantitySold as a set of 8
Piston MaterialForged aluminum
Pin Diameter0.927 in (23.5 mm)
Bore (Mm)102.362
Piston StyleFlat top, with four valve reliefs
Bore4.03 in (102.362 mm)
Package Qty1
Package TypeEA

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Some parts are not legal for use in California or other states with similar laws / regulations
p65 warning