vibration in the driveline after racing...

BYRDPE

Founding Member
Nov 4, 1998
1,556
0
37
Memphis,Tn.
made a few passes on a set of nittos and all of a sudden on the way home i notice the vibration from take-off til ~4500 rpm.
no vibration at idle. i can really feel it after i load the clutch. i'm guessing it's got to be in the tranny, rearend or it's an axle.
any ideas on how i can try to pinpoint where it coming from?
btw...i did miss second on my last run and i didn't drive the car anymore til i headed home. that's when i noticed the issue.
thanks for the suggestions.

found the culprit...
View attachment 242868