This discussion covers identifying when a conversion from a 2 bolt main to a 4 bolt has been performed. http://www.bigblockbruce.com/watch_our_videos.html/ en-us How to 2010 J.L.Hunt J.L. Hunt http://www.bigblockbruce.com/watch_our_videos.html/images/BBB LOGO RECTANGLE.jpg http://www.bigblockbruce.com/watch_our_videos.html/ http://www.bigblockbruce.com/watch_our_videos.html/watch_our_videos.html Tue, 13 Jul 2010 17:07:28 GMT This discussion covers identifying when a conversion from a 2 bolt main to a 4 bolt has been performed.There is some controversy surrounding the question of whether or not Chevy 2 bolt main and 4 bolt main blocks were cast separately. Some folks believe that these two types of blocks were cast differently even though they have the same casting numbers. The truth is http:// Tue, 13 Jul 2010 16:59:19 GMT