Quote:
Originally Posted by Barry_R
Aluminum shifts and moves more than iron under heat and stress. I am in the apparent minority here - but I really prefer iron blocks. Not old busted up ones though.
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Barry, can an aluminum block suffer core shift from the repeated heat and stress cycles from hard running? Or is core shift limited solely to the foundry? For example, could we see a sonic test of an aluminum block look like this one with obvious CS (granted this is a Buick 455) if it originally came from the foundry with good sonic testing numbers?
