Product Summary

302, 327, 350, 383, 395, 302, 351W, C Piston Ring Style

  • Fits Ford and Chevy small block V8's
  • Three over-bore sizes to choose from
  • 1/16" top ring thickness
  • 1/16" second ring thickness
  • 3/16" oil ring thickness

Key Specs

MFG. Part #
BrandSpeedway Motors
Piston Ring StyleC
Piston Ring Diameter

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Speedway premium Plasma Moly piston rings work with either gas or alcohol fuels, handle 8000+ rpm, and up to 14:1 compression.


CARB Warning

For race/ off road use or for use on pre-1966 vehicles.

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.


MFG. Part #
BrandSpeedway Motors
Piston Ring StyleC
Piston Ring Diameter
Piston Ring DesignConventional
Top Ring MaterialPlasma Moly Coated Cast Iron
Top Ring Thickness1/16"
Second Ring MaterialPlasma Moly Coated Cast Iron
Second Ring Thickness1/16"
Oil Ring Thickness3/16"
Oil Ring TensionStandard Tension
Sold in QuantitySet