Historic Formula 3
The Championship is open to cars currently running to a configuration in which that individual chassis competed with between January 1st 1964 and December 31st 1970 compliant with International FiA F3 regulations for that period. This will include cars that competed in the Temporada Series which took place at Interlagos 10/1/1971, 17/1/1971, 25/1/1971 and Taruma 1/02/1971 under FiA (1964 – 1970) Formula 3 regulations. No cars may use wings or aerodynamic aids.
All cars must have current FIA or HSCC Vehicle Identification Forms.
Class A Cars which competed between 1/01/64 – 31/12/65 with one litre sidedraught engines
Class B Cars which competed between 01/01./66 and 31/12/70 with one litre downdraught engines, or earlier cars fitted with wider wheels and tyres specified in Class A and /or downdraught engines will run in Class B
Class I Invitation Class for Historic F3 cars built between 1964 and 1970 complying cars only with Historic F3 1000cc European Trophy Regulations.