Well i recently had my rearend redone from a 9bolt 2.77 broken posi to a GM 10bolt with Richmond 3.73's and an eaton posi. Well the guy said that there is a 500-1000mile break in period before i can start driving it like an actual sports car if you know what i mean but today i went out and raced it on the street and i only have about 200miles on it. Its the only time i have done it. Could this have done something bad to the gears or anything? Thanks

 

Not really.