Driveline Clatter

[No_Skillz]

My car had developed a clatter from the transmission side. I dropped the transmission and opened it up to find that I had a tooth chipped off of 2nd gear and my main pinion geart teeth were chipped in several areas. I got a rebuild from Dogbox Racing, a shop with a great reputation. TOB is new. However, after reinstall, the clatter is still present.

Clatter is:
Speed related, but is faster than the rpm of the wheel.
Present in all conditions when car is slowing down, regardless of being in gear/neutral or clutch engagement.
Sounds akin to a card in bicycle spokes between 5-25mph.
Turns to a medium pitched, quiet pulsing at speeds >30mph.
Inaudible when accelerating or maintaining speed.

At this point I am suspecting CV joint because it's the only thing left, but I have serious doubts in my diagnosing abilities right now because I got a trans rebuild for no reason.

[Auto RS T]

I'm with you on this one. Check the CV joint for play between the cups and the shaft with a twisting motion. You can pull half of the boot back to make this easier, without regreasing everything. You may have to pick up an axle boot clamp if you can't reuse yours.

Besides that I would check the wheel bearing, and other suspension components in the front end.