[CrateCamaro]

I was under the assumption that when anything breaks in the rear end the trans is usually broke as well or needs to be checked. I bet the shaft got bent when the perches broke and or the driveshaft was rammed into the back of the trans to make the back of the case break like that. I went through two transmission cases last year (350 turbo) both broke in the bell housing. Checked and found the bolts that hold the lower engine mounts to the frame were loose. I also tossed the urethane trans mount in favour for a stock one and never had an issue since. With one solid mount and one stock appreakng mount theres going to be an issue specially if theres a hight difference. Your actually preloading the trans case when you tighten the trans mount bolts to the crossmember. The urethane mount will give a little....not alot. Another problem is with a 46 year old car that cant have any bars towards the front frame there is going to be some twist in the front sub frame. Weakest point...transmission. A rubber mount will allow it to move a bit without trying to twist the transmission in half. As far as the springs go in my opinion the split leafs are the best barr none...i had Tri City Competition springs prior to my Calvert stuff and it was night and day difference. If you are looking for ride height order a set of split monos with negative ride height but keep in mind if they will sag over time. Mine lowered itself enough to take preload out of the bars. Make sure the rear shackles are loose and move free. I have jam nuts on mine to keep them loose enough to move free and tight enough to keep them from deflecting side to side. Hope you can find the trans breaking issue. Nice crossmember too ill be looking into buying one of those.