I have a 400 SBC chev (4 bolt) that I marine converted. I got it from a local car guy, and it was supposed to be rebuilt. I plastigaged the bearings, and all looked well, although # rod bearing was at the minimum clearance within spec. I installed it, and it ran well with great oil pressure, until a got a knock. I pulled it out, and #1 bearing was fried. The bearing material was pulled with copper showing. The only problem I could find is one I overlooked last time I had it apart. # 2 rod bearing is on backwards. The piston is in right, but the rod chamfer is facing # 1 rod instead of facing the crank throw side. It didn't hurt # 2 rod bearing at all except for some wear along the edge of the bearing. Two questions:
1) Would the #2 rod installation cause the failure of #1 bearing?
2) Are these rods offset .060 in the pistons? (In other words, you can't just turn it around, can you?) I figure the mark on the piston is there for a reason. Any help is greatly appreciated.