i was thinking thats was what you had COOL i would build a bbc with a 4.375 crank and a stock 454 9.800 deck block this get you to the 500 cid if you can run that in your class ? or bigger ? but any way the stock bbc will take the crank with some work but if you have $$ then there is other ways to go to i would build for max tq and gear for that use a set of alum heads water pump to help keep weight down or go to tall deck block and go to 600 cid if so i have a alum bbc donovan i will sell any way you go you need to look at a very good wet sump oil pan for any engine but may not do the job as good as a dry sump all that jumping