General Motors Part # 3998652 Z Bar
GM's "652" Z-Bar was used on F and X body
cars from 1967 to 1975, with Small Blocks and
6 cylinders. These pony cars include the Camaro
(67-69), Firebird (67-68), Chevy II / Nova (68-75),
Omega (73-74) and Ventura (71-74).*
*Please look to bottom of page for applications.
Parts books list zbars as levers or equalizers.
New Old Stock 3998652 Z Bar
In this view, you can see how the upper rod lever
loops around for steering column clearance.
Measurements
The center Pipe is 9 1/8" end to end.
The upper rod arm (left) is 6" from the pipe to rod
hole center.
The lower rod arm (right) is 3 5/8"
from the pipe to rod hole center with a gauge hole
at 2 5/8".
Rod attachment holes are 3/8".
Engine Side
In this view, you can get an idea of how the lower
rod arm is attached and the relationship between
the two arms. This is where the lever action comes
from.
Applications
Pontiac
| 67-68 | ALL F/M.T. |
| 71-74 | ALL X/M.T. |
Oldsmobile
73 ALL X 6 cyl. S.T. LEVER & SHAFT,clutch
74 ALL X S.T. LEVER & SHAFT,clutch
Chevrolet
68-70 All with 153 engine
67-69 Camaro 153-350 including 302
68-75 Chevy II/ Nova (6cyl.)(307)(327)
Disclaimer:
Factory correct applications are your responsibility.
GM made part and part # changes with no rhyme but a reason (no production interruptions at any cost).
Application charts are for replacement parts that were available at the time of parts book printing.
My observations come from the parts I have in my collection or other reliable sources. Your parts may differ.
If Factory correctness is your goal, do more research, join car clubs and forums and buy an assembly manual if one is available for your Project Car (you wont be sorry).
This is a fun and interesting part of the hobby!
