My 482" Pond aluminum block S/O engine's great!! No leaks, drips or any other maladies. It runs cooler than the cast iron 428 it replaced too. The build quality and attention to detail is unsurpassed.. 80 lbs off the front end of a Cobra is huge..
I don't think my 494 rwhp 07 Z06 is suffering from a weak block either...
Dave