What's the appeal of an aluminum engine block?

[RodKnock]

Originally Posted by ERANJ

I think RodKnock has made many global statements...if you don't agree with my position you're wrong or submit until you see it my way.

All I'm asking for is to see evidence of the HP difference. We all know the weight difference between a cast iron and alloy block. That's 125 lbs.

And all this discussion over 15-30 HP or "dozens of HP."

And from what Brent and others have said, aluminum shifts around, expands, squirms or whatever, which means that it leaks more? Alloy engines are rebuilt more often? They lose compression because of expansion? How much compression? Does an alloy block engine lose .1 pt, .2 pt, .3 pt, etc. of compression?

Pond and Shelby have been selling blocks for at least 10 years. How many consumers have posted here and complained about their alloy block? Certainly the 8 (or more) alloy block purchasers that have posted here on this thread have not complained about loss of power, lack of reliability and/or quality. Any alloy block consumers feel their alloy blocks are fickle? Seriously, I'm always interested in consumer feedback about various products. I subscribe to Consumer Reports.