I just recieved a new exhaust manifold (port side)from Bombardier (OMC) for a 4.3 chevrolet. I noticed that the darm manifold does not have all the bolt holes machined. In other words, there are normally two exhaust studs per exhaust port, well this new one has the first exhaust port machined for one stud, the second exhaust port has one hole machine and the #6 cylinder has the last two holes machined. Is there a reason for this...? Anyone else run into this...? Any suggestions...? thanks in advance
