Well Bart looks like the group is starting to take shape. I am having my 401 block machined in about a week. Can you give me any info on things to do or not to do? Special mods or tips you have run across. I would like to end up with about 500 HP. Cam ideas? Pistons? Carb? I have a Edelbrock performer intake to put on it. I saw an article some time back on drilling some extra holes in the valley area, any idea how many or where? I will be putting the extra oil line in the valley. I have to get one soon. Thanks Mark