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Stock World Formula
Engine 1) Stock World Formula Briggs and Stratton Racing Engine.
2) Stock Carburetor to model.
3) Stock ± .030 bore and stroke to engine model.
4) Stock Piston to model.
5) Stock Cam to model.
6) Stock valve to model.
7) No Porting or Milling Allowed.
8) Electric Starter allowed.
9) Stock Exhaust with flange.
10) Stock air filter system.
11) Stock Fuel Pump.
12) Stock Manifold system.
13) Stock Flywheel to model.
14) Billet Valve cover allowed.
15) Gasoline Only.
16) Fuel cell is recommended.
17) Must have working clutch.
18) Must have Chain Guard.
19) Minimum weight of 315 pounds.
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