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See the specs below for allowable modifications / changes to the engine.  The hitch height and weight will depend upon the engine size.  I will be monitoring these classes closely and are subject to change during the first half of the season and / or depending upon the amount of participation.
 
 
        Modifieds        
                   
  Single Cyclinder   20 HP Twins   25 HP Twins  
Weight 1100 H /1050 L   1050 H / 1000 L   1025 H / 975 L  
Hitch Height 13 " inch     12.5 " inch   12 " inch    
Head Billet / Stock   Stock NO spacer   Stock NO spacer  
Cranks Stock     Stock      Stock     
Bore Max .030" over stock Max .030" over stock Max .030" over stock
Piston Flat Top     Flat Top     Flat Top    
Cams Stock   Stock   Stock  
Valves Stock   Stock   Stock  
Carburetor Stock 1" Venturi Max       Stock 1" Venturi Max Stock 1" Venturi Max    
Lifter Stock     Stock     Stock    
Ignition Stock     Stock     Stock    
Head Plates Yes     Yes     Yes    
Block Stock Port & Polish   Stock Port & Polish   Stock Port & Polish  
                  ** NO Electric Fuel Pump in all class **    
   

** Valves are Stock position and Angle **

**  Singles and Twins are combined **

   
                   
        Stock Altered        
  Single Cyclinder   20 HP Twins   25 HP Twins  
Weight 1100 H /1050 L   1050 H / 1000 L   1025 H / 975 L  
Hitch Height 13 " inch     12.5 " inch   12 " inch    
Head Billet / Stock   Raise 1" Max   Raise 1" Max  
Cranks Stock / Factory   Stock / Factory   Stock / Factory  
Bore Max .030" over stock Max .030" over stock Max .030" over stock
Piston Flat Top     Flat Top     Flat Top    
Cams 0.330/0.275 lift   0.360/0.330 lift   0.360/0.330 lift  
Valves 2.035 / 1.625 - 1.165   1.450/ 1.250   1.450/ 1.250  
Carburetor Round Shape - 1carb.  1 venturi - 1.20" Max.         
Lifter Stock     Roller Rocker Permitted Roller Rocker Permitted
Ignition Any     Any     Any    
Head Plates Yes     Yes     Yes    
Block Stock Port & Polish   Stock Port & Polish   Stock Port & Polish  
        *Electric Fuel Pumps Permitted*    
                   






Gutz-n-Glory Pulling
gutznglorypulling@gmail.com

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