I have a world iron block that was purchased in the Fall of 2009 and assembled by Dwayne Porter and subsequently dynoed (720hp/720tq)...it's a pump gas 572. When this post came up i spoke with Dwayne and he stated that the main studs on mine torqued up fine. He stated that the studs are good and not to worry about it. This is not a full on effort and if it were i would have better hardware in there anyway....including the crank & rods.
Perhaps World has changed suppliers in the past year ? That could certainly account for the soft metal fastner that a few of the reputable engine builders have described.
