08-12-2009, 03:09 PM
Right now I have a H/C 347 that in the course of my modding I have added a ATI super dampner, Evans waterpump, Fast 90/90 intake, Kooks stepped headers, 42 lbs. injectors, billet fuel rails and upgraded fuel pump. These were installed for the day that I would go with bigger cubes. I know that to use the Fast I will have to go with a cathedral port head. I want to move up to a 427, but still use the mods that I have already purchased. Would I be better with a ls7 block, ls3 block or sleave the ls1. I wouldn't be spraying or boosting the engine at any point and I would be looking for good driving manners.