gear Help

[Norton22]

Does any one run a 3/10 mile dirt track I am trying to find out what gear I need I dont want to turn over 7800 RPM (mustang 2300)

thanks for any help

[mustang99]

gear help

we race on a 3/10 track,,my son's mustang has a 345 gear ,,runs in second gear with a 5 speed tranny,,turns around 7500 rpms