Product Summary

327, 350, 400, Bare Cylinder Head Style, Cast Iron

    Key Specs

    Cylinder Head StyleBare
    Material TypeCast Iron
    Combustion Chamber Volume49cc
    Intake Runner Volume200cc

    Need To Know

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    Using proprietary Speed Flow technology, Dart has developed more efficient port designs with improved velocity and flow capabilities. The combustion chambers and ports have been redesigned for greater breathing characteristics and more controllable combustion. Casting walls are cleaner and more consistent, resulting in better control over flow and heat.

    • Standard 23 degree valve angle
    • Standard port location and intake bolt pattern fit most manifolds
    • Pushrod holes enlarged for clearance with high ratio rocker arms
    • Heart shaped chambers improve combustion efficiency
    • Multi-angle intake seats and radiused exhaust seats dramatically increase airflow
    • Hardened exhaust seats compatible with unleaded gasoline
    • Manganese bronze intake valve guides and phosphorous bronze exhaust valve guides extend cylinder head life
    • Spark plug holes are machined for tapered seat 5/8" hex "peanut" spark plugs
    • Dual bolt pattern accepts flange mount and center bolt valve covers

    Item Details

    Angle Plug
    200cc Intake Runner, 49cc Combustion Chamber


    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 #10310010PF
    Cylinder Head StyleBare
    Material TypeCast Iron
    Combustion Chamber Volume49cc
    Intake Runner Volume200cc
    Exhaust Runner Volume83cc
    Combustion Chamber Volume Range40cc - 49cc
    Intake Runner Volume Range200cc - 209cc
    Exhaust Runner Volume Range80cc - 89cc
    Spark Plug StyleAngle
    Intake Port ShapeRectangle
    Exhaust Port ShapeSquare
    Intake Valve Diameter2.020"
    Exhaust Valve Diameter1.600"
    NotesWorks with Fel Pro intake gasket #1205, if any porting is done work
    Sold in QuantityEach