Based on the Holley EFI Factory X performance numbers from the 2024 season the NHRA Technical Department is increasing the supercharger overdrive by changing is increasing the supercharger overdrive by changing the supercharger rear jack shaft pulley and rear cog pulley for the 2019-2023 Chevrolet COPO 350 from 32 teeth to 34 teeth on the jack shaft pulley and from 34 teeth to 32 teeth on the supercharger pulley. 2021 Dodge Drag Pak from 3.375 inches to 3.125 inches. 2019 Ford Cobra Jet from 3.625 inches to 3.250 inches iron block. 2019 Ford Cobra Jet from 3.375 inches to 3.000 inches aluminum block. This rule change will go into effect immediately. NHRA reserves the right in the future to make additional rule changes to control performance and maintain parity in the category.