clunking in rear while braking

[Jason 302]

My rear end will start clunking and will get slower as the car comes to a stop. Only does it while braking, doesn't seem to do it when I use the E-brake. All my control arms and shocks are tight, as well as my lugs and driveshaft bolts. I put new U-joints in last year but can't really rule them out since they have about 15 5000 rpm launches on them with slicks. Had my rearend rebuilt last year with 3.73's a trak-lok rebuild, new bearings and seals. Any ideas? My dad seems to think it's a loose bolt or something but I think it's in the rearend or brakes.

 

[dastang2]

it's gotta be in your brake drum somewhere. maybe a chipped shoe.

 

[fly4spd]

my spare jack used to bounce around, i thought it was something more serious, but then i checked that

 

[willys1]

I got the same thing,its mechanical! Its in the rear end or the tranny,I havent pin-pointed it yet! It happens when you Decellerate,and the tranny is downshifting.Rite now I think it "is" in the rear end !!