Timing Mark Problem
Need Help - Had the harmonic balancer and timing cover removed and mechanic replaced oil plugs in chevy 350 engine. Installed engine in my 57 chevy truck, starts and engine runs great put can not get the timing mark to appear to set correct timing. I put the engine on TDC 1 piston and installed the distributor and all spark plug wires. Question - Can the harmonic balancer be but on wrong by mechanic? Can the timing chain have been installed wrong? Any other help would be great.