1975 Champion Spark Plug 400

The 1975 Champion Spark Plug 400 was a NASCAR Winston Cup Series race that took place on August 24, 1975, at Michigan International Speedway in Brooklyn, Michigan. Programs were sold for this race at a price of $1.50 per copy ($7.21 when adjusted for inflation). The cost of admission to this race was relatively cheap; children got in for US$5 ($24.05 when adjusted for inflation) while adults got decent seats for US$10 ($48.1 when adjusted for inflation).

1975 Champion Spark Plug 400

The 1975 Champion Spark Plug 400 was a NASCAR Winston Cup Series race that took place on August 24, 1975, at Michigan International Speedway in Brooklyn, Michigan. Programs were sold for this race at a price of $1.50 per copy ($7.21 when adjusted for inflation). The cost of admission to this race was relatively cheap; children got in for US$5 ($24.05 when adjusted for inflation) while adults got decent seats for US$10 ($48.1 when adjusted for inflation).