I snapped the input shaft in my trans the last time I went racing. So, to keep from having to push the car around, I pulled the trans out, installed a new input shaft, new drive chains, hardened 4th clutch hub, and a new differential. The drive chains were stretched pretty far, the 4th clutch hub had worn splines, and the diff broke the roll pin. So, after replacing all that and putting it back together, I got the car running last night. The transmission makes kind of a knocking noise, which sounds like it's coming from the differential area. It does it not matter if it's in park, neutral, or drive. However, when it's in drive or reverse, the noise is louder.
I took a video....not sure if that helps.
Anyone have an idea what it could be?
http://www.youtube.com/watch?v=3_5uU...&feature=share