started up went thru like two firing orders and now will barely turn over bad main bearing?

 

Why do you think its the main bearing? How old is the motor? or the oil in the motor. What other symptoms (if any)? How does the battery look?

 

bought it from some one supposedly rebuilt and it did look it new pistons i put the heads on
kickin myself in the *** i was to lazy just to build it myself
but it's a rod bearing on 6 already yanked her apart
need to have some" words " yet with who i got it from but that'll be a whole nother thread!!!