1974 NASCAR International Stock Car Racing Rule Book Grand American Cars Section 20A-4 -- Minimum Weight

a. Cars must weigh no less than 3200 pounds. Any weight added to the car must be located within the body shell.

NOTE: For AeroWarriors.com users, Grand American Cars are governed by the same rules as the NASCAR Grand National Championship Division, with the exception of this Section, and the following:
Section 20A-1 -- Competing Models
Section 20A-2 -- Engine
Section 20A-3 -- Engine Mounts
Section 20A-5 -- Frames
Section 20A-6 -- Ground Clearance
Section 20A-7 -- Wheels