Idler Arm Question

[Francisco Aguiar]

1972 duster - what Idler arm should be used when converting to v8 k-member from a slant 6? There is a listing for 2 different types to be used.
1972 and older - Moog Pn. K7042
1973 and up Moog Pn. k7086
Drum brake steering linkage is still being used from 1972
Spindles and brake components are from 1973 and up

 

[Dana67Dart]

Pure assumption here....
If the steering box, pitman arm are 72 and older and the k frame is 72 and older, and the cross bar is 72 and older I would go with the 72 idler arm.

Again just an assumption. The brake parts are not the driving force here.

 

[Locomotion]

Not my strong point either, but.....

Steering components used have to be for the year K-member being used. Check if there is a different pitman arm needed depending on power or manual steering.

Upper ball joints are different between '72 & '73 so I believe you'll need '73+ upper control arms to accept '73+ disc brake spindle ball joints.

 

[67Dart273]

The year of the K (except 67) has nothing to do with the year of the idler, WHEN COMPONENTS MAY HAVE BEEN swapped

If the K member is 67 only, it has a "one year" mounting for the idler, and must use 67-72 center link and pitman arm

For any other year of K........................

If the center link is 67-72, then the idler MUST be 67-72, along with the pitman arm and a steering box with the proper spline size to fit

If the center link is 73/ later then the above is true except "the rest" must be 73/ later

There is a big spline and small spline steering box

Also changed was the motor mounts (spool mounts 73/ later) and if the car has a factory anti roll bar, the roll bar is different 73/ later as it snakes through the hollow K member, as well as the lower control arm connector tabs for the bar are different, 73/ later

You can use an OLDER bar with a newer K by mounting the bar under, just as 72/ earlier did, and by using 72/ earlier lower arms

 

[67Dart273]

67-72 the stud nuts are on top

73/ later the stud nuts are on the bottom

 

[RustyRatRod]

There is no V8 of six cylinder center link for the Duster. They're all the same. They are only separated by year model.