In a 300ft dirt drag what will a stock 08 trx 450r run?

 

i just bought a new 2008 450er and i weigh 250lbs and my buddy on his 2007 yamaha raptor 700 weighs about 190. we are both stock and i get him every time at 500 feet by about 2 bike lengths. but im not sure what the run times are though...