https://en.bitcoin.it/wiki/MtGox"MtGox imposes a $1,000 USD limit for withdrawals per 24 hours and a $10,000 USD limit for withdrawals per month with most non-verified accounts. Bitcoins withdrawn are counted toward this limit as well and the USD value is calculated at the market rate at the time of the attempted withdrawal. Customers that have been Verified have higher limits and customers that have Trusted status have limits even higher[8]. Any account-to-account transfers made also count toward this limit as well.
Requests for higher withdrawal limits may be submitted by email
For higher limits for withdrawal of USD funds, email:
aml@mtgox.comFor higher limits for withdrawal of BTC funds, email:
btcupd@mtgox.com"
Good luck