Engine seemed to have a miss. Checked compression and #3 was at about 30psi while the rest were 120. Pulled the head, looked fine, no burnt valves and gasket was good. The top thrust side of a few of the pistons were eroded a little on the edge (maybe had water in them at some point?). Pulled the pistons and all of the top rings were broken in half! #3 was in about 6 pieces and the second ring was busted. Ordered replacement pistons, rings and rod bearings and did a frame in "rebuild" just so I can drive it for a while. Back together and running better but one of the rocker adjusters was loose. I need to tighten it up before I start driving it regularly. May try a jam nut or peening the outside to tighten it back up. It does have a Super Six intake that someone installed at some point.