I voted small block. I have the 340 in the T/A, a 5.9 in my truck, and a 383 in my convertible, and based on the experience with those cars there is no question in my mind, the 383 is a gas guzzling dog, the extra weight up front is not good however the small blocks are sweet. But someday maybe I'll have a car with a 440 or a hemi and it will change my opinion!