Hey everyone got a 51' 6cyl.(need a little help

I'm trying to get my truck in time and I guess the fly-wheel has been replaced by the last owner ( from what I'm told)Is there a hole that needs to be lined up to get to TDC. I can get the engine to crank and fire but it's so out of time it won't stay running. I don't know if that makes any sense or not. But if anyone has any suggestions on timing or any parts ,please let me know. :confused: :confused: :confused:


Gregory L Kocyba