[4] The third race was won by the Martínez's teammate, Jorge Goeters, in San Luis Potosí.
But, Rafael Martínez had a chrash and finished in 27th place and lost the leadership of the season, and Antonio Pérez became in the new leader.
Salvador Durán took his first pole position and Germán Quiroga won the race.
[6] Homero Richards took the victory in the fifth race in the Autódromo Hermanos Rodríguez's oval.
Italics - Pole position set by final practice results or rainout.