Like I said in my post the other night something let go in the top end of the motor. Well now I know what it was. #8 Exhaust just wiggles no other movement. Either the lifter broke or the cam is flat (I'm leaning towards the cam). It doesn't matter I am changing all of the lifters and the cam I didn't feel like it was making enough power anyway. I have 1 5/8" headers and 2.5" merged into a single 3" exhaust right now. I am guessing I have a pretty severe bottle neck with my current set up. I am going to go true duals. Should I go with 2 1/4" or 2 1/2" pipe. I will be using as quiet a muffler as I can get away with because I want to hear the radio on the highway not the mufflers. I already have a Performer intake and matching 600 carb on the burb now. Is anyone running a performer cam in a tow vehicle? I am tired of not having enough power I have to get this thing to pull stronger or its gone. I am kind of fed up working on it. Give me some advice guys on which way to go. Getting kind of depressed about this thing I love my Burb but i am thinking it may be time to move on.