- Daytona is the final 'restrictor plate' race

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Restrictor Plate Races - Racing-Reference.

  › end-era-sundays-daytonalast-restrictor-plate-race-. A restrictor plate or air restrictor is a device installed at the intake of an engine to limit its power. This kind of system is occasionally used in road.  

What is a plate race in nascar

  In the transitional years —76 where the seven-litre engines cu in had restrictor plates, Daytona and Talladega broke 40 official lead changes six times, while Michigan International Speedway broke 35 official lead changes in both of its races. Recommended Stories. Sort by Best Sort by Latest. Can You Solve This Riddle? After a summer where the two subsequent superspeedway races were run with smaller carburetors cubic feet per minute cfm instead of cfm proved to be inadequate to sufficiently slow the cars, NASCAR imposed restrictor plates again, this time at the two fastest circuits, both superspeedways : Daytona for all NASCAR-sanctioned races and Talladega for Cup races.