confused, need a little help here
ok so i was recently given a 400sbc tht was locked up, i tore it down replaced the crank with an eagle, and replaced the rod bearings and main bearings and rings, as i was rolling over the crank to torque the rods, something hit and it wouldnt turn, i rolled it around the other way made almost a ful rotation and same story,i thought tht maybe it was hitting the cam because the timing chain was off at the time, so i rolled it over again till it hit and the cam could spin freely, so obviously its not hittin the cam, none of the conecting rods are bent, no bent or broke valves....im confused here and could deffinately use any help u got