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Dirt Oval Rules

(All measurements taken with car ready to race at ride height.)

Rules are subject to interpretation by the race organizer.


Sprint Cars


  1. Flat foil center sections will be allowed a .250” turndown at the leading edge.


Late Models


Mid-West Modified

  1. Side Panels
    • Length: Min 12" / Max 14" (Measured at all points of the panel)
    • Height: Min 3” / Max 3.5” (Measured at all point of the panel)
    • Both sides must be symmetrical in length and mounting location (cannot be offset from each other).
    • Top of side panels must be flush to the plane of the center panel.
    • Leading edge of side panel can be angled back from the bottom to the pillar, but must be a straight edge. (no wheel cut outs)
    • Minimum distance between leading edge of side panel and back edge of front tire: .750” (measured with tire pointed forward and car sitting at resting ride height using a .750” block set down between the tire and panel as a no-go gauge)
    • Minimum distance from the center of the front axle back to the rear of the quarter panel: 15.75”. (** = be sure to leave room for front wheelbase and kick-up adjustments as well as different tire sizes for the min .750” gap)
    • Side panels can be flat or convex in shape (bowed out) as long as they fit within the overall max width, but cannot be concave in shape. “Step outs” at the bottom of panel are ok.
    • Side panels as well as rear quarter panels cannot be tucked under center deck panel.
  2. Hood
    • Hood Length: Min 3" / Max 4.75" (Measured from the firewall to the point where the nose and hood meet)
    • Front of hood must be the same width as the Nose Panel. The hood must be flat and can taper out to the firewall but cannot cover front tires or exceed the width of the main deck panel. Max rake of .250" difference from leading edge to trailing edge measured from the bottom of the chassis.
    • The “engine area” of the hood cannot be enclosed. A max hood side panel of .750” is allowed, but cannot extend above the plane of the hood panel.
  3. Nose
    • Nose Panel Width: Min 4" / Max 5.50" (Measured as panel surface area inside the end plates)
    • Nose Panel Length: Min 4" / Max 5.50" (Does not include a max allowable .500” mounting tab)
    • Nose panel must not be concave (dished) in shape or contain any ribs, wickers, flaps, or openings to direct airflow.
    • Side panels of Nose must be perpendicular to the nose panel (no flares). Allowable extension of side panels above the plane of the Nose Panel is maximum .250" at every point along the plane of the nose panel. A max .250” flare is allowed at the bottom of the Nose Side Panel




SR10 Spec Class

  1. JCONCEPTS 1987 Monte Carlo Street Stock Body – Part No. 0422L

21.5 Street Stock


10.5 Street Stock


SC B-Mod


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