Quote:
Originally posted by Carrera3.5L
The heads should always be chamfered when increasing the bore to eliminate any potential "hot spots" on these conversions. Any machine shop or engine builder worth his salt will tell you the same.... 
I am very surprised the company that sold you the pistons/cylinders or the machine shop didn't advise you of this.
Ralph
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I'm not surprised.
I'd never heard of it before I read about your rebuild Ralph. I think the places selling the parts generally assume that the engine builder knows what they are doing - which in my case is was not always true. ;-)
-Chris