[steve25]

A new crossshaft can be carefully centered with brass shim stick and tack welded in place if need be, then the shim stock is removed .

that could get you another 15K miles out of the carrier if you don’t beat on the car too hard, but it will still need to be taken out of the rear end to do that.

[mrennie]

If I understand correctly, the clunking is when pulling/pushing on the end of the axle? So in and out make the noise rather than up and down?

An up/down motion making a clunk could be axle bearings and shaft wear.

An in/out motion making a clunk is likely excessive end play, with the play being between the end of the axle and the cross shaft (axle pushed in) versus the C-clip and the recess in the side gear (axle pulled out).

On an Eaton clutch posi, shims are inserted between the case and clutch stack behind the side gears, to adjust clutch action. When the clutch plates wear, or if there are insufficient shims, the side gears sit further in the case (further from the cross shaft), which results in more end play which could cause a clunking noise when the car is turning or rocking side to side.

[kingbuzzo]

My car makes tons of annoying noises but this is definitely in/out. Does that mean that the eaton posi can be salvaged if I get the rear end guy to put in some shims?

Originally Posted by mrennie

If I understand correctly, the clunking is when pulling/pushing on the end of the axle? So in and out make the noise rather than up and down?

An up/down motion making a clunk could be axle bearings and shaft wear.

An in/out motion making a clunk is likely excessive end play, with the play being between the end of the axle and the cross shaft (axle pushed in) versus the C-clip and the recess in the side gear (axle pulled out).

On an Eaton clutch posi, shims are inserted between the case and clutch stack behind the side gears, to adjust clutch action. When the clutch plates wear, or if there are insufficient shims, the side gears sit further in the case (further from the cross shaft), which results in more end play which could cause a clunking noise when the car is turning or rocking side to side.

[kingbuzzo]

Originally Posted by steve25

A new crossshaft can be carefully centered with brass shim stick and tack welded in place if need be, then the shim stock is removed .

that could get you another 15K miles out of the carrier if you don’t beat on the car too hard, but it will still need to be taken out of the rear end to do that.

I finally got the cheby carb replaced with a proper pontiac qjet with Cliff's help and this car is a rocketship now - this is going to be difficult - night and day difference however it was clunking before the carb swap...just my luck