Minnownite, I have two tubs of the Belzona product. It is an industrial strength metal epoxy, can withstand the high temps of an engine block, is machinable, etc...etc.. We used it in industry as a fill product between wear plates where three ton coils up to four tons and 800 degrees F. would slide along the plates, every three or four minutes, 24 hours a day. The epoxy metal fill would last up to a year before requiring reapplication. You are welcome to use what you need for your repair without cost except for gas as I live in Hamilton. Send me a personal message if interested. I also have a home machine shop and can tig weld that block if it is aluminum.