Can my stock 700r4 tranny handle a 454 big block with 425 hp and 500 lbs. of torque?

Check the post called "we're gonna make this 700 live if it kills us" or something to that affect. It's a recent post. It will tell you. pdq67

In a word, NO!!! A MODIFIED one however will handle up to 500HP and 500 ft./lbs. of torque but no more.