M200 breakage

Dave Jung · 04-12-2010, 05:54 PM

Well I finally got my stocker out after a year and a half of work, sweat and money. Booked in for the friday test day before the first bracket race of the year. Did some driving on the return roads and set the lash etc. Went down when the lanes opened and made my first pass ever in a class car. All was good, the launch felt excellent, pulled hard in first, second pulled hard, shifted into 3rd gear and BANG!! felt a thump on the floor after the BANG. Motor kept running, shut it off and pulled over to the side. Found the driveshaft in 2 pieces, twisted in the middle. The u-joints were both intact as well. The tranny case is busted all the way around and the trans pump and converter is busted up good. So my question is, the chicken or the egg scenario, did the trans case bust, push the trans backwards and bottom out the shaft and break it? Or did the shaft break, causing the destructive forces to break the trans case. I have read about the weak bell housing area of the 200, and the braces available, but I would have thought that a 305 would be easier on them, as I know guys run them behind big blocks. After I pulled everything apart, I think the trans case went first. Any thoughts on this? Also where can I get some of the bell housing braces? thanks in advance.

Dave

04-12-2010, 05:54 PM	#1
Dave Jung Member Join Date: Oct 2008 Location: Surrey B.C. Posts: 135 Likes: 3 Liked 5 Times in 5 Posts	M200 breakage Well I finally got my stocker out after a year and a half of work, sweat and money. Booked in for the friday test day before the first bracket race of the year. Did some driving on the return roads and set the lash etc. Went down when the lanes opened and made my first pass ever in a class car. All was good, the launch felt excellent, pulled hard in first, second pulled hard, shifted into 3rd gear and BANG!! felt a thump on the floor after the BANG. Motor kept running, shut it off and pulled over to the side. Found the driveshaft in 2 pieces, twisted in the middle. The u-joints were both intact as well. The tranny case is busted all the way around and the trans pump and converter is busted up good. So my question is, the chicken or the egg scenario, did the trans case bust, push the trans backwards and bottom out the shaft and break it? Or did the shaft break, causing the destructive forces to break the trans case. I have read about the weak bell housing area of the 200, and the braces available, but I would have thought that a 305 would be easier on them, as I know guys run them behind big blocks. After I pulled everything apart, I think the trans case went first. Any thoughts on this? Also where can I get some of the bell housing braces? thanks in advance. Dave __________________ 6535 stk 81 Malibu K/SA