I read this on another site,the guy who made the original post was breaking the pumps,because the car was tire shaking so bad that the vibrations where going there the solid motor mounts to the weakest link,the oil pump,the pumps still work's and for a street car are fine don't jump to consulsion,sounds to me if the guy would learn to set the car up it wouldn't tire shake.
Some how I don't see where GM cares what a aftermarket reman supplier does with there parts,when GN hasn't used a SBC motor in 6yrs.
Anyway make your own choice's but take in to consideration the problem the gy was have causing a oil pump to break,that is some serious tire shake.
So Ive read through all the links, but im still not sure if this is one to be concerned with? m155hv. I had a local shop put in the new pump and I did not get to look at it. I dont have solid motor mounts so if it is one of the questionable ones do I even need to be concerned with this? Thanks for the info. Jay.