I just finished installing my new 383 and hooking everything else up. Everything ran real smooth, after letting it run for a while I decided to load the pistons. Went great, stayed under 3k rpms. On my street on the way home, something started clunking when i engage my clutch. I raised the rpms in gear and it didnt continue. Does this sound familiar to anybody, wondering if I didnt tighten the clutch down hard enough? any suggestions on what you think t might be?

 

I took the car for a quick drive to feel the problem, since I only got to feel it once. Turns out it happens 80% of the time I engage my clutch, and it happens again when I come to a complete stop with my brakes. Seems like it might be the driveshaft or exhaust stuff around the axle? Something for sure is knocking around under the car. The clunking noise, I can feel through my shifter when it happens. I dont feel it in the clutch though.