Race camshaft for a 283 chevy?

Hi Everyone, i have a dirt track car that i want to put a 283 SBC motor into. Its not the biggest i know but its all i got for now. Ive asked questions about how i should cut the camshaft for best racing performance, but most people simply tell me to get a bigger motor, i get an impression that they not so sure themselves. This isnt a common motor to see on any race track, its possible most people simply dont know.