I am so confused. What pitman arm do I need? Idler?
There are 4 pieces there that must go together, regardless of the year of the car or K member. The pitman must fit the box (small vs large spline) and the pitman, center link and idler must be either in the (67) 68--72 group or the 73/ and later group. The tapers point the opposite direction (up/ vs down) in the early vs late groups.
Standby..........
Early setup has tapers pointing "up" nuts on top
Late (73/ later) the nuts are on the bottom
The idler is worn when you can push pull the center link up/ down and it moves appreciably. I don't know just what "if any" spec that is, but certainly more than 3/8" I'd be suspect
Big Block Dart "old website" tech pages
Tech Index
Looking at the site posted above, I'd say the 7075 is what you want........small spline pitman, late style components
There are 4 pieces there that must go together, regardless of the year of the car or K member. The pitman must fit the box (small vs large spline) and the pitman, center link and idler must be either in the (67) 68--72 group or the 73/ and later group. The tapers point the opposite direction (up/ vs down) in the early vs late groups.
Standby..........
Early setup has tapers pointing "up" nuts on top
Late (73/ later) the nuts are on the bottom
The idler is worn when you can push pull the center link up/ down and it moves appreciably. I don't know just what "if any" spec that is, but certainly more than 3/8" I'd be suspect
Big Block Dart "old website" tech pages
Tech Index
Looking at the site posted above, I'd say the 7075 is what you want........small spline pitman, late style components