I love hyperutectic pistons I have used them in my sons 360. I used pistons from a sb Chebby 400. I dont know all the numbers but my machinist at my local engine shop, said the compresion height was the same and the only machining needed was increasing the pin dia. Then matching the bore dia. to the Chebby size. He said I had enough block left to go to the next overbore size bigger. I have used Them in 2 of my 401's AMC part, and they have been fine. I'd buy them, good price and less machine shop cost. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://list.amc-list.com/pipermail/amc-list-amc-list.com/attachments/20091212/b6c2b642/attachment.htm> _______________________________________________ AMC-list mailing list AMC-list@xxxxxxxxxxxx http://list.amc-list.com/listinfo.cgi/amc-list-amc-list.com