2024 ProTruck Rules Quick Reference

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Weights and Measurement


Quick Reference


1.4  All Trucks must be at specified minimum weights and percentage at all times
 
 A/B (Waterford origin 4 link)         
Weights
2900 lbs
Maximum Left Side Percentage 56.0
Minimum  Nose Weight              54.0

Wheelbase                                
108 inches  
  
Ground Clearance                      
4 inches   including exhaust except Fuel Cell and Crankshaft   
Fuel Cell                                         7 inches
Crankshaft Height                         12 inches

Crankshaft Must be centered between frame rails

Engine Location-
Forward most spark plug base must be 4 inches forward of imaginary Line between center of Ball Joints.
(Tolerance .25 – .5 inch max)                     

                         
C   (Riverhead Origin) 
Weights  
2900 lbs      
Maximum Left Side Percentage 56.0
Minimum Nose Weight               54.0

Wheelbase                                
112 inches 
   
Ground Clearance                      
4 inches   including exhaust except Fuel Cell and Crankshaft   
Fuel Cell                                         7 inches
Crankshaft Height                         12 inches

Crankshaft Must be centered between frame rails
Engine Location- Forward most spark plug base must be 2 inches forward of imaginary Line between center of Ball Joints.
(Tolerance .25 – .5 inch max)
 
D   (Street Stock Conversion)    
 
Weights
78-87 G-Body Metric Frame  2950 lbs
 Non-metric including Camaro 3025 lbs
 
Maximum Left Side Percentage 56.0
Minimum Nose Weight               54.0

Wheelbase                                 108 inches    

Ground Clearance                      
4 inches   including exhaust except Fuel Cell and Crankshaft 
  Fuel Cell                                         7 inches
Crankshaft Height                         12 inches
Must be centered between frame rails.
 
Engine Location- Forward most spark plug base must be 2 inches forward of imaginary Line between center of Ball Joints.
(Tolerance .25 – .5 inch max)
 
 
S – Metric (Seekonk origin) 

Weights
 3070 lbs (includes wheel base penalty of 20 lbs per inch under 108)
Maximum Left Side Percentage 56.0
Minimum  Nose Weight               55.0 
(Adjusted 1% higher due to Engine height and set back)

Wheelbase                                 102 inches 
Ground Clearance                       2 inches  

All components including Exhaust     
Fuel Cell                                          7 inches
Crankshaft Height                         11 inches
Must be centered between frame rails
Engine Location forward most spark plug base even with a line between center of Ball Joints.               
(Tolerance .25 – .5 inch max)          
 
1.5 Weight Tolerances:  None – No other weight tolerances allowed
 
1.6 Weight Adjustments    
 
 
*Three link rear Add 50 lbs. all Chassis
*Lower trailing arm must connect to chassis to stock mount in stock location
*All Chassis Add 25 lbs for altered front mount
*Max trailing arm length 28.00 inches eye to eye.
*All links including Upper link must be tubular with spherical rod ends or stock
*No springs, rubbers or other design allowed.
 
Rear Shelf  Metric (A/B S) 
All Metric Chassis had a shelf therefore are to apply shelf rule including S.
There is no penalty of removing or altering the rear shelf
Please note: removal of the shelf alters the rear clip strength.  A tie in replacement tubing that runs from side to side in place of the shelf is recommended..
 
Aluminum Heads ( Claimer or 603) Add 20 lbs per frame rail as specified in the engine section (5)
 
Carburetor2bbl 4412 deduct 25 lbs if original motor eligible for 4bbl  (Option 1 & 2 & Claimer)
 
Tread width – (See Section 12 for specification)
Over specification for Chassis add 20 lbs per inch or 5 lbs per 1/4 inch