Well I finally got to pick my "new" truck up this week and luckily it was all I expected it to be plus some. Drives like a new one! Fixed a fuel leak on the old 6.2 and runs like a top. I've decided to leave it in temporarily till it cracks a head, breaks a crank, or I just get bored with it(won't be long anyway). Still haven't decided on bbc or 6.0. I was a little disappointed with you guys, I thought there would be more bbc haters on here. Just kidding! How much horsepower could I expect to get out of a 10.5:1 6.0 with a mild/moderate cam and a tune through factory exhaust manifolds. I figure my 427 is making less than 400? I know my bbc will have a ton more low end torque, but low end torque is for tow trucks, it doesn't win truck pulls.