Probably a few more tricks than just 3.55's to hit 11's. Since what I've posted above, I've replaced the stock 360 cast heads with the Speedmaster heads from the "big sale"... LOL. It dropped it to a 13.13, but I used all the factory rocker/pushrods and still the small cam. The heads want more cam for sure. Changes coming to the car this year, so hopefully it won't make another 13 second pass... LOL