Product Summary

3.313" Piston Ring Diameter

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    Key Specs

    MFG. Part #91015905
    BrandSpeedway Motors
    Piston Ring Diameter3.313"
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    Speedway Motors 91015905 Details

    Fits 3.313" bore Speedway Custom 4 Ring Pistons for Flathead V8.  Set of 8.  Cast Iron top and 2nd groove rings.

    +.125" oversize.  Oversizes based off original 3.188" bore size.

    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.

    Speedway Motors 91015905 Specifications

    KEY SPECS
    MFG. Part #91015905
    BrandSpeedway Motors
    Piston Ring Diameter3.313"
    GENERAL
    Top Ring MaterialCast Iron
    Second Ring MaterialCast Iron
    Sold in QuantitySet

    Ratings & Reviews

    5

    2 Reviews

    Overall Assessment

    Customers appreciate our product's top-notch quality and practicality. Its superior features make it ideal for C69A flathead V8 engine builds, a testament to its excellent usability. The material quality is deemed praiseworthy and customers explicitly favor our product over competitive options, recognizing its value at a reasonable price. Buyers readily recommend our product due to these attributes, underlining its safety and reliability. The product stands distinct, winning customer satisfaction with its performance.

    5

    2 reviews

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    Would definitely buy the same again.

    5.0

    4 years ago

    Fordhavendave

    Christchurch, New Zealand

    Verified

    Getting ready for a new build on a C69A flathead V8 engine.

    Would Recommend

    good product at a good price.

    5.0

    10 years ago

    irishpol

    Pflugerville TX.

    Verified

    very happy with this product, would recommend.

    Would Recommend

    Showing 2 of 2 reviews

    Questions & Answers

    1 Question • 1 Answer

    What are the ring thickness dimensions of the compression rings and oil rings?

    by Heath

    • 11 years ago

    1 answer

    1 of 1 questions shown

    Fitment

    • 221 Ford Flathead V8

    • Ford Flathead V8 17 Stud 221 18

    • Ford Flathead V8 21 Stud 221 40

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    Customer Impersonation Script