Thanks for the input. I bought the same timing chain. I'm wondering if I should advance it 2 deg to compensate for the 2400 stall converter. I'm also considering milling my heads for more compression. Just don't wanna start bumping valves eeek! I know the piston is far down but I've never done anything on this level. I have the eddy 650 also sprung for the summit ignition box. My diff is an 8 3/4 w/3.23 for now. Oh and it's a hydraulic cam. Got the springs to match. Did you mill your heads? I checked the comp before I tore it apart. Bout 120 all around. +\- 5.