2006 Sequoia Clunking sound

Bought this a couple weeks ago. Has 236k miles and I got it for 2600 bucks. Had some valvetrain noise. First thing I did was pull the cams out and found they didn’t clock the sub gear with the service bolt. Also found a broken cam cap that was epoxied together.

Anyway, I bought another cam cap that luckily had the same alignment and bore size (literally within a thousandth), replaced cam seal, put an aisin timing belt kit on, and a new serpentine belt with tensioner. Oh. and I put on a new crankshaft seal. Runs great and looks great with my tundra.

Has this stupid clunk sound that sounds like it’s from the center rear. Looked underneath and seems stout. Any ideas?

 

When does it clunk?
Any suspension work done by you or the PO?

My '04 had a clunk on acceleration and braking. It ended up being a loose trailing arm bolt after I swapped out the rear springs, I figure I forgot to torque that one.

If you don't think it's in the rear diff, I would do a visual on all the rear suspension nuts/ bolts.

 

I haven’t found any clunking patterns yet. It just seems to do it whenever. I probably haven’t driven it enough yet to notice.

Service history says all that has been done in the past couple of years was rear shocks. I haven’t gotten around to tinkering with suspension yet.

 

I wouldn’t guess rear diff. I changed the oil out and it looked clean as heck. Though that doesn’t mean much until you take it apart

 

Check the center transmission mount for missing bolts or cracks.

https://www.tundras.com/threads/inspect-your-transmission-crossmember.74691/

 

Yup, that it. Bingo.
Found some cracks at the 4 bolts next to the mount. Lifted up the tranny and it clunks.