G'day! Click Click when accelerate.

[Chico]

Hello. Hoping for a little help.
1971 f-250 with a 428 FE and Dana 60 and C6

When accelerating from a dead stop I get a click click sound also when shifting to reverse I get a single matching click sound. This has just started. All shifts fine and otherwise perfect. If I accelerate very slowly I get no noise.
Mounts? Transmission? Drive?
Thanks.

[elgemcdlf]

First place I would look is u joints

[Ranchero50]

Ditto, park it somewhere it won't roll over you and knock it out of gear, then rock the driveshaft looking for movement.

[1972hiboy]

Agreed start with u-joints. I have had rear ends internally make that noise and the noise resenated up the driveline so if u-joints get ruled out go to the rear end.

[Chico]

Thanks guys. Will do just that. I'll check the u joint then respond.

[Chico]

Hello again.
Did have some play in the middle joint. Replacing tomorrow. Then will see if noise goes.

[Chico]

U joints done and drive shaft is true and straight.
Alas it's still doing the click click. Thought it was gone but came back to haunt me. Albeit a bit less. Transmission mount all good too.
Any other ideas?

[AZf100]

I Would check the rear-end, bay be something loose in there. I've chased some weird noises before coming from the rear-end.

[Chico]

Backed off idle and no more noise! Hasn't done it since.

[ddcrim]

Had a Dodge truck that did the same thing. Had me going on that one. Turned out to be loose transmission mount. Tightened bolts and problem cured.