68-72 Chevelle Pedal Assembly and NSS
1968 to 1972 Chevelle Clutch and Brake Pedal Assembly
There were minor changes from model year to
model year on the 68-72 Chevrolet A Bodies.
The green notations indicate the year and the
specific options a part number pertains to.
3934149
4.648 BRACKET (hanger)
68 (1968 Assembly Manual)
History* :
The Part # 3934149 was used on 68 Chevelles
and most didn't have any holes on the drivers
side of the hanger for the NSS, since the Neutral
start switch wasn't available til the 1969 model
year. Part # 3934149 was replaced by part # 3937992
in November of 1968 (69 Model year).
The February 1969 parts catalog lists part #
3939675 as the 69 Chevelle number and Part #
3969416 replaced Part # 3939675 in July 1969.
I assume the different part numbers reflect when
the Neutral Start Switch mounting changed.
The 1968 pedal hanger in the picture above
doesn't have the mounting holes for the NSS.
3967783
0.830 PEDAL,Clutch
68-72 (Chevy Parts Book)
The 1968-72 Chevelle clutch pedal is a"pin style"
pedal that uses a clip retainer. This "pin style"
makes it incompatible with it's Buick, Oldsmobile,
and Pontiac cousins.
History* :
The part #3916485 was used on the 68 models
The "485" was replaced by part #3956777 in
February 1969. The "777" was replaced in
April 1970 with part #3967783. The "783" was
used thru the 1972 model year
3937889
4.625 PEDAL, Brake
68-72 (Chevy Parts Book)
The only difference I have found between the
Chevelle part # 3937889 and the Pontiac part #
1386088, is the"889" pad has the horizontal
impressions that differentiate "pin style" pedals
from "bolt style" pedals.
3798256
0.831 (4.626) BUSHING, Clutch Pedal Shaft (nylon)
68-72 (Chevy Parts Book)
There are two of these nylon bushings used in
the brake pedal and two used in the hanger.
They prevent wear an friction between the pedals.
They should be lubricated with grease when
assembled (I use white lithium).
3828428
0.837 RETAINER, Clutch and Brake Pedal Shaft
68-72 ALL (Chevy Parts Book)
1361714
0.829 BUMPER, Clutch Pedal Stop (15/32" Free Height)
68-72 (Chevy Parts Book)
History* :
1361714 to 3978807 8/73
3978807 use 340688 rework
1361699
2.447 CLIP, Stop lamp
68-72 Chevelle (Chevy Parts Book)
1362835
2.447 SWITCH, Stop lamp
68-72 Chevelle (exc. cruise cont.) (Chevy Parts Book)
3858198
4.630 PAD, clutch or brake
68-71 (exc. A.T., Disc Brake) (Chevy Parts Book)
3934000
4.630 PAD, brake
History* :
3934000 to 3988198 2/73
68-71 w/Disc. Brakes (exc. A.T.) (Chevy Parts Book)
3893181
4.630 PAD, parking brake pedal pad
68-72 (Chevy Parts Book)
History*:
3893181 Replaced 3977961 10-69
NONE
4.630 PLATE, Brake and Clutch Pedal Pad Trim
The 68-72 Chevelles didn't use trim on their
pedal pads.
1993490
4.054 Switch Assembly, clutch operated
69 (exc.A.T.)
(1969 Assembly Manual)
3983966
4.054 Switch Assembly, clutch operated neutral start
70 (exc.A.T.) (Chevy Parts Book)
History* :
3983966 rep 3961587 01-70
3986841
4.054 Switch Assembly, clutch operated neutral start
71-72 (Chevy Parts Book)
3961590
4.054 BRACKET, clutch operated neutral start switch
70-72 (exc. A.T.) (Chevy Parts Book)
3954289
4.054 BUSHING, clutch operated neutral start switch
69 (exc.A.T.) (Chevy Parts Book)
This nylon bushing was used to prevent wear
and reduce friction between the switch arm
and the pin pictured below.
3954288
4.054 PIN, clutch operated neutral start switch
69 (exc. A.T.) (Chevy Parts Book)
This pin bolts to a hole in the clutch pedal
"main beam" and is used as a pivot point for
the NSS arm.
3908243
4.054 CLIP,Neutral Safety Switch Bushing Retainer
69 (exc. A.T.) (Chevy Parts Book)
4.648 BRACKET (hanger)
68 (1968 Assembly Manual)
History* :
The Part # 3934149 was used on 68 Chevelles
and most didn't have any holes on the drivers
side of the hanger for the NSS, since the Neutral
start switch wasn't available til the 1969 model
year. Part # 3934149 was replaced by part # 3937992
in November of 1968 (69 Model year).
The February 1969 parts catalog lists part #
3939675 as the 69 Chevelle number and Part #
3969416 replaced Part # 3939675 in July 1969.
I assume the different part numbers reflect when
the Neutral Start Switch mounting changed.
The 1968 pedal hanger in the picture above
doesn't have the mounting holes for the NSS.
3967783
0.830 PEDAL,Clutch
68-72 (Chevy Parts Book)
The 1968-72 Chevelle clutch pedal is a"pin style"
pedal that uses a clip retainer. This "pin style"
makes it incompatible with it's Buick, Oldsmobile,
and Pontiac cousins.
History* :
The part #3916485 was used on the 68 models
The "485" was replaced by part #3956777 in
February 1969. The "777" was replaced in
April 1970 with part #3967783. The "783" was
used thru the 1972 model year
3937889
4.625 PEDAL, Brake
68-72 (Chevy Parts Book)
The only difference I have found between the
Chevelle part # 3937889 and the Pontiac part #
1386088, is the"889" pad has the horizontal
impressions that differentiate "pin style" pedals
from "bolt style" pedals.
3798256
0.831 (4.626) BUSHING, Clutch Pedal Shaft (nylon)
68-72 (Chevy Parts Book)
There are two of these nylon bushings used in
the brake pedal and two used in the hanger.
They prevent wear an friction between the pedals.
They should be lubricated with grease when
assembled (I use white lithium).
3828428
0.837 RETAINER, Clutch and Brake Pedal Shaft
68-72 ALL (Chevy Parts Book)
1361714
0.829 BUMPER, Clutch Pedal Stop (15/32" Free Height)
68-72 (Chevy Parts Book)
History* :
1361714 to 3978807 8/73
3978807 use 340688 rework
1361699
2.447 CLIP, Stop lamp
68-72 Chevelle (Chevy Parts Book)
1362835
2.447 SWITCH, Stop lamp
68-72 Chevelle (exc. cruise cont.) (Chevy Parts Book)
3858198
4.630 PAD, clutch or brake
68-71 (exc. A.T., Disc Brake) (Chevy Parts Book)
3934000
4.630 PAD, brake
History* :
3934000 to 3988198 2/73
68-71 w/Disc. Brakes (exc. A.T.) (Chevy Parts Book)
3893181
4.630 PAD, parking brake pedal pad
68-72 (Chevy Parts Book)
History*:
3893181 Replaced 3977961 10-69
NONE
4.630 PLATE, Brake and Clutch Pedal Pad Trim
The 68-72 Chevelles didn't use trim on their
pedal pads.
1993490
4.054 Switch Assembly, clutch operated
69 (exc.A.T.)
(1969 Assembly Manual)
3983966
4.054 Switch Assembly, clutch operated neutral start
70 (exc.A.T.) (Chevy Parts Book)
History* :
3983966 rep 3961587 01-70
3986841
4.054 Switch Assembly, clutch operated neutral start
71-72 (Chevy Parts Book)
3961590
4.054 BRACKET, clutch operated neutral start switch
70-72 (exc. A.T.) (Chevy Parts Book)
3954289
4.054 BUSHING, clutch operated neutral start switch
69 (exc.A.T.) (Chevy Parts Book)
This nylon bushing was used to prevent wear
and reduce friction between the switch arm
and the pin pictured below.
3954288
4.054 PIN, clutch operated neutral start switch
69 (exc. A.T.) (Chevy Parts Book)
This pin bolts to a hole in the clutch pedal
"main beam" and is used as a pivot point for
the NSS arm.
3908243
4.054 CLIP,Neutral Safety Switch Bushing Retainer
69 (exc. A.T.) (Chevy Parts Book)
History* Note: These are replacement numbers and dates, they don't necessarily reflect production dates.
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,
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!
