hi guys while my block is in the machine shop getting..dipped and sonic tested.i was tryn to figure out the best crank to put in..NOW when i took the motor apart(402ci) i discovered that it had 454 heads #336781 and 454 crank #353039..i dont know yet if it is bored or not..i am planning to make it a 427, it would seem that a lot of the componenets are there..for know i going to use the stock heads via new spring kit and if i can find a forged 4140 steel crank.. i have a couple of specs that ive come across..but dont know which one to go with for maximum hp. if u could point me in the right direction that would be awsum.