78-81 A Linkage
1978-81 A and G Body Clutch Release Linkage
0.854 ROD, Pedal Push
This upper rod goes between the clutch pedal and
the z-bar. The pin on the left attaches to a hole in
0.829 SEAL, Rod Release
This clutch pedal push rod seal attaches to the
engine side of the firewall and seals around the
rod. This rod boot is discontinued and not
reproduced as of this time. The reproduction
of part #3973089 for 70-81 F bodies and
75-79 X bodies does fit well.
8.977 SCREW, Tap (#8-18 x 1/2")
Two of these sheet metal screws attach the rod
boot to the firewall.
On Automatic transmission cars without cruise control
There are (3) three dimples that are in a diagonal line
on a flat spot on the firewall, below the master cylinder
and towards the drivers side fender. Center dimple is the
center of the clutch rod hole and is used for the pilot hole
of the hole saw.
Cruise Control Hole
On automatic cars with cruise control there is a
1 7/16/' hole that will most likely need "opened up"
for clutch rod clearance. This hole is centered between
the other two dimples.
Original Clutch Rod Hole
This is a factory made hole on an original 4 speed
1980 Malibu. The hole is 2 1/8" in diameter and the
outer two dimples are used for the clutch rod boot
0.852 LEVER, W/ Shaft, Clutch Control
This equalizer bar (z bar) is curved to conform
to the firewall. The upper rod attaches to the arm
on the left. Reproductions range from crude press
bent parts to smoother mandrel bent units.
0.851 STUD, Lever Shaft Ball to Engine
This ballstud screws into the engine.
0.851 SEAL, Lever Shaft Ball Stud
This is the replacement seal for the engine side
0.851 SEAT, Shaft Ball Stud
There are two of these seats in the z bar. one on
either side of the ball stud below.
0.851 STUD, Shaft Ball to Frame
This is the ballstud with the shorter 3/8"-16 stud.
Some people double up on the frame bracket.
This would require using part # 3898610 with
it's longer threads.
0.851 SPRING,Shaft Ball Stud Seat Retainer
This retainer fits in the groove on the inside of
the Z-bar, and holds the two seats and ball stud
0.851 SEAL, Shaft Ball Stud (Felt)
This seal goes between the ballstud and the frame
bracket to keep grime from mixing with grease.
25/64" ID x 1" OD)
0.852 BRACKET, Lever and Shaft
This view would be from the tire in. This z bar
frame bracket bolts to the frame using the bolts
below thru the holes and into the existing holes
in the frame. Some reproductions of this part are
pretty much dead on.
8.977 SCREW, Tap (5/16" -12 x 7/8")
Three of these are needed to bolt the part #463564
bracket to the frame.(The holes are already there)
8.932 WASHER, Lock (3/8")
This lock washer goes on the outside of the frame
bracket on the ballstud, to keep the nut from
8.915 NUT, Hex (3/8"-16)
This nut holds the z bar ball stud to the frame
0.787 ROD, Fork Push
There were two versions of the lower adjustment
rod. One (1st design) used an elbow shaped rod
with internal threads and a short all thread type
rod. The 2nd design was a long all thread type
rod with a swivel. These part numbers are not
available. But the two styles used on Camaros
and earlier Chevelles is basically the same.
78 (M20, M 15, M75)
79 W/M.T. (M15, M20) (1st Design)
This is the short all thread rod.
79 W/M.T. (M20, M75) (1st Design)
This is the elbow shaped rod.
(Clutch Fork Adjusting Push)( Length 6.30)
79 W/M.T. (M15, M20) (2nd Design)
80-81 AT, AW W/M.T.
This is the longer all thread rod.
0.787 SWIVEL, (NOTE 1)
79 W/M.T. (M15, M20) (2nd Design)......
NOTE 1: When using 3840845 swivel in place
of 551165 rod, 14008223 rod must be used in
place of 476773 rod.
8.915 NUT, Hex (3/8"-16)
This nut is used as a jamb nut to lock the clutch
adjustment in place.
4.037 RETAINER, Control Rods
This is a hairpin style retainer that must be used
with the washers below to attach the lower push
rod to the z bar.
8.929 WASHER, Flat (25/64" ID X 3/4" OD)
This is just a 3/8" flat washer that squeezes the
spring washer between it and the lower z bar arm.
4.037 WASHER, Control Rods-Spring
(13/32" ID x 49/64 OD)
This is the spring washer.
0.844 SPRING, Fork Pull Back
This spring goes from a hole in the clutch release
fork to a hole in the frame. It is a must have part
to retain pedal free play and to hold the linkage
together. Some reproductions are exact copies
without the black paint.
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,
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!
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