Product Summary

Dual Spring Valve Spring Style, 1.25" Outer Spring O.D.

    Key Specs

    BrandIsky Cams

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    Our complete line of valve train parts to help your Flathead Ford V8 run on unleaded fuel. These super heavy duty dual valve springs are made from top-quality chrome silicon steel and are designed to work with stock 1932-1953 Ford retainers PLUS our 450-87F retainer adapters.

    • Outside Diameter: .925", 1.240"
    • Inside Diameter: .690", .925"
    • Installed Height: 1.687
    • Seat Pressure: 115 lbs. @ 1.687
    • Open Pressure: 240 lbs. @ 1.187
    • Max Net Valve Lift: .500"
    • Spring Rate: 250

    Suggested for "full-race" camshafts only.

    Item Details

    Must use 450-87F retainer adapters plus the correct stock retainers for the valves being used.


    CARB Warning

    For race/ off road use only

    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. 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.


    BrandIsky Cams
    Valve Spring StyleDual Spring
    Open Pressure240 lbs. at 1.187"
    Seat Pressure115 lbs. at 1.687"
    Outer Spring O.D.1.25"
    Outer Spring I.D..925"
    Inner Spring O.D..925"
    Inner Spring I.D..69"
    Sold in QuantitySet
    NotesSet of (16)