assuming that's the block casting number, it's a 69-70 390. The head bolt size will tell the difference -- 7/16" for 69, 1/2" for 70. And of course he exhaust ports -- rectangular 69, dog-leg 70. ------------- Date: Fri, 11 Jan 2008 23:25:45 -0500 From: "Spro" <msproviero@xxxxxxxxxxx> Tonight I finally got around to looking up some casting numbers and "Frankenstein" has a name... 3195529 -- Frank Swygert Publisher, "American Motors Cars" Magazine (AMC) For all AMC enthusiasts http://farna.home.att.net/AMC.html (free download available!) _______________________________________________ Amc-list mailing list Amc-list@xxxxxxxxxxxx http://www.amc-list.com/mailman/listinfo/amc-list