Date: Sun, 25 Nov 2012 04:28:15 +0000 (UTC) From:mccanada@xxxxxxxxxxx Hi guys I built a 1970 AMC 360 for my sons Spirit. He wanted to use a 998 automatic so I pulled a? crankshaft from a 1977 304 and put it in the 360. Question which harmonic should I use? ======================== Use the 360 balancer. I don't recall for sure if there is a difference. If there is the balancer should match the rotating mass, which is greater in the 360 than the 304. I know the cranks are the same. -- Frank Swygert Editor - American Motors Cars Magazine www.amc-mag.com _______________________________________________ AMC-list mailing list AMC-list@xxxxxxxxxxxxxxxxx http://list.amc-list.com/listinfo.cgi/amc-list-amc-list.com