Just three days after the 1973 race, USAC held an urgent meeting to draft emergency rule changes in time for the Pocono 500. Rear wings were reduced in size from 64 inches to 55 inches. On-board fuel capacity was reduced from down to , and fuel tanks were only allowed on the left side of the car, with the exception of a 2 gallon pick-up tank. An energy-absorbing material was to be placed in the spot formerly occupied by the right-side tank, and total fuel allotment for the 500 miles was reduced from 375 to 340 gallons. By May 1974, the rules were changed once more, further reducing the total fuel allotment to 280 gallons, and rear wings down to 43 inches.