Gearbox Mounts

[burnsy150]

I have a 6hdd 4l60e in my commy..
say if i hold it in the one gear crusing along let off the gas then give it a bit of stick i can hear a slight clunk as soon as i give the car a bit of throttle, just wondering if this is usual? car has developed a noticeable thump between up + downshift between 2-3rd especially once the car has built up a bit of temp but is fine when stone cold, any thoughts guys?

have posted this somewhere else but not with much luck

[Deltak]

Just a guess, but have you looked at any play in the prop shaft universal joints.

Going from a trailing throttle to power will cause a clunk as all the movements are taken up in one go.

For what it is worth.

[Farlig]

i replaced a uni joint in my vl years back, and then i replaced all the joints and had driveshaft balanced. car ran like new not a single driveline noise again

before i would get about 1/3 turn movement, after the repair/rebuild, i had almost nil movement.

[Farlig]

I have a 6hdd 4l60e in my commy..
say if i hold it in the one gear crusing along let off the gas then give it a bit of stick i can hear a slight clunk as soon as i give the car a bit of throttle, just wondering if this is usual? car has developed a noticeable thump between up + downshift between 2-3rd especially once the car has built up a bit of temp but is fine when stone cold, any thoughts guys?

have posted this somewhere else but not with much luck

also sounds like maybe since its fine when cold, your box might need a freshen up?

[burnsy150]

farlig, freshen up as in rebuild or service? because i aint doing no rebuild..other thing what reasons would cause a 'thump' on up/downshift between 2-3rd..my thoughts are it would be a internal gearbox problem as it only happens on the one gearchange, any thought? many people have said give the tranny a service and it should go away

[Farlig]

farlig, freshen up as in rebuild or service? because i aint doing no rebuild..other thing what reasons would cause a 'thump' on up/downshift between 2-3rd..my thoughts are it would be a internal gearbox problem as it only happens on the one gearchange, any thought? many people have said give the tranny a service and it should go away

just take it to a gearbox specialist, get a service done on it (cant hurt), tell the blokes you not to happy with the way its running, and to have a look at it. they'l let you know any faults.