Menu

Shop

Garage

Cart

Account

Product Summary

21-4N stainless steel Valve Material

    See more details

    Key Specs

    MFG. Part #35987-03
    BrandRHS
    See more specs

    Need To Know

    Quick and Easy Returns

    Return Policy

    RHS 35987-03 Details

    When it comes to street performance and/or competitive racing, the horsepower capability of cylinder heads can be limited if not used with the right parts. Cylinder head studs and components can mean the difference between high performance durability and stress-related component failures. RHS tests all of its cylinder heads with premium COMP Cams components giving you the optimal airflow combination for maximum engine performance. These exclusive RHS part kits give you the ideal combination of components for your cylinder head assembly and are proven to offer superior performance for your specific engine application.

    35987-03 Assembly Kit:

      • Fits Small Block Ford cylinder heads
      • Includes premium COMP Cams components
      • Contains enough parts to assemble ONE cylinder head

    35987-03 Includes:

        • 4 Sportsman Stainless Steel Intake Valves 2.080" 11/32, + .100" Long (COMP Cams Part# 6003-1)
        • 4 Sportsman Stainless Steel Exhaust Valves 1.600" 11/32, + .100" Long (COMP Cams Part# 6002-1)
        • 8 Super Locks 10° Angle, 11/32" Stem (COMP Cams Part# 611-1)
        • 8 Steel Retainers 10° (COMP Cams Part# 740-1)
        • 8 Dual Valve Springs 1.430" O.D. .697 I.D (COMP Cams Part# 987-1)
        • 8 Spring I.D. Locators .060" Thick, .570" I.D. 1.550" O.D. (COMP Cams Part# 4771-1)
        • 8 Metal Body Viton Valve Seals .530" Guide, 11/32" Stem (COMP Cams Part# 529-1)
        • 8 Magnum Rocker Studs 7/16" Diameter, 7/16" Base Thread size (COMP Cams Part# 4503-1)
        • 4 Flat Adjustable Guide Plates for 5/16" sized pushrods (COMP Cams Part# 4835-1)

    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.

    RHS 35987-03 Specifications

    KEY SPECS
    MFG. Part #35987-03
    BrandRHS
    GENERAL
    Valve Material21-4N stainless steel
    Exhaust Valve Diameter1.600"
    Intake Valve Diameter2.080"
    Valve Stem Diameter0.342"
    Valve Spring StyleStandard
    Outer Spring O.D.1.430"
    Exhaust Valves IncludedYes
    Intake Valves IncludedYes
    Valve Spring IncludedYes
    Retainers IncludedYes
    Locks IncludedYes
    Lock Style10 Degree
    Lock MaterialHardened steel
    Damper Spring IncludedYes
    Number of Springs Per ValveSingle
    GTIN Code036584210603
    Sold in QuantityKit

    Fitment

    • Ford 289

    • Ford 289

    • Ford 289

    • Ford 302

    • Ford 289

    • Ford 289

    • Ford 289

    • Ford 302

    • Ford 302

    • Ford 302

    • Ford 289

    • Ford 289

    • Ford 289

    • Ford 302

    • Ford 302

    • Ford 289

    • Ford 289

    • Ford 302

    • Ford 302

    • Ford 289

    • Ford 289

    • Ford 302

    • Ford 302

    • Ford 289

    • Ford 289

    • Ford 302

    • Ford 302

    • Ford 302

    • Ford 302

    • Ford 302

    • Ford 302

    • Ford 302

    • Ford 302

    • Ford 302

    • Ford 302

    • Ford 302

    • Ford 302

    • Ford 302

    • Ford 302

    • Ford 302

    • Ford 302

    • Ford 302

    • Ford 302

    • Ford 302

    • Ford 302

    • Ford 289

    • Ford 289

    • Ford 302

    • Ford 302

    • Ford 302

    • Ford 289

    • Ford 289

    • Ford 302

    • Ford 302

    • Ford 289

    • Ford 289

    • Ford 289

    • Ford 289

    • Ford 302

    • Ford 302

    • Ford 302

    • Ford 289

    • Ford 289

    • Ford 289

    • Ford 302

    • Ford 302

    • Ford 302

    • Ford 302

    • Ford 302

    • Ford 289

    • Ford 289

    • Ford 302

    • Ford 302

    • Ford 302

    • Ford 302

    • Ford 302

    • Ford 289

    • Ford 289

    • Ford 302

    • Ford 302

    • Ford 289

    • Ford 289

    • Ford 289

    • Ford 302

    • Ford 302

    • Ford 302

    • Ford 289

    • Ford 302

    • Ford 302

    • Ford 289

    • Ford 302

    • Ford 302

    • Ford 302

    • Ford 302

    • Ford 302

    • Ford 302

    • Ford 302

    • Ford 302

    • Ford 289

    • Ford 289

    • Ford 302

    • Ford 302

    • Ford 289

    • Ford 289

    • Ford 302

    • Ford 302

    • Ford 302

    • Ford 289

    • Ford 289

    • Ford 289

    • Ford 302

    • Ford 302

    • Ford 302

    • Ford 302

    • Ford 289

    • Ford 289

    • Ford 289

    • Ford 302

    • Ford 302

    • Ford 302

    • Ford 302

    • Ford 289

    • Ford 302

    • Ford 289

    • Ford 302

    • Ford 302

    • Ford 289

    • Ford 289

    • Ford 302

    • Ford 289

    Customer Impersonation Script