Product Summary

454, 7.92" Outside Diameter, 18.1 SFI Rating, Steel

    Key Specs

    MFG. Part #870006
    BrandTCI Automotive

    Need To Know

    This Product Will Ship Free

    Shipping Policies & FAQs

    Quick and Easy Returns

    Return Policy


    All internal combustion engines display crankshaft torsional vibration. As the piston rises and falls so does cylinder pressure. The changing pressure results in forces being transmitted along the connecting rod and applied to the crankshaft journal. The TCI Rattler counteracts those vibrations by using internal rollers that automatically offset twisting forces that cause vibration (see Fig. 1). The Rattler is an absorber that eliminates the root cause of torsional vibration. It is effective for the entire RPM range and extends crankshaft and bearing life, as well as increases valve train stability and life. The design does not utilize viscous fluids and requires virtually no maintenance. And the unit s timing marks are etched onto the body and cannot move relative to crankshaft centerline. The Rattler is also lighter in weight than most units of the same size and material construction.

    This TCI Rattler Harmonic Balancer is designed to fit 3-Bolt Pulley Big Block Chevrolet engines. This balancer is for externally balanced engines only. Overall Diameter - 7.920.


    1970-2000 Chevy Big Block V8 454

    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 #870006
    BrandTCI Automotive
    Outside Diameter7.92"
    SFI Rating18.1
    Material TypeSteel
    FinishBlack powdercoated
    Sold in QuantityEach
    Engine BalanceExternal
    Degree MarkingsYes
    GTIN Code788120020428
    Harmonic Balancer ConstructionNine internal rollers
    Mounting Hardware IncludedNo