Back to my original question:
Originally Posted by TEQ
A PO had installed a weber/OME carb. The most recent PO had removed it and put the original factory carb back on. I noticed tonight that the air cleaner assembly is not bolted to the block where it should be. The two pictures below illustrate. Note the missing fastners. It *feels* secure, but clearly this can't be good, right?
I've looked more closely at this. Bull thought maybe the air cleaner was from an older model, and that is why the bolts don't align. I actually don't think that's the case...the air cleaner looks different than his because the intake tube is missing the flex piece and final "horn". But the air cleaner appears to be the same model.
But those bolts don't align, and no amount of torquing will get them to.
The PO also had the manifolds machined to fix an exhaust leak. I thought maybe they really ground down the manifolds such that the carb was closer to the block, causing the mis-alingment. They would have had to take off 1/3" or so for this to be the case, and looking at the manifolds they don't look that thin. So I don't think that's it.
I think the carburator is the wrong one for this model. This would also explain why there are two emissions tubes (those little rubber guys about 1/4" diameter) that are not plugged into anything. In fact the whole emissions stuff looks horribly disfigured

.
So: Is it likely that a carb from an older model mounts the air cleaner slightly further to the right, causing the misaligned bolt holes?