The first and second Chevy II's pedals are shaped and built exactly the same, with the only differences being the clutch pedal stop arm, and the type of clip that holds the pedal into it's hanger(early Models).
Even though the arm change sounds minor it is a huge one, with the angle and length of the changing significantly.
Obviously with the body style change came a redesigning of the pedal hanger.
 |  |
| 1966-67 Chevy II Pedals | 1962-65 Pedals |
The Brake Pedal and Hardware are interchangeable except possibly the shaft retainer.
see below right
 |  |
| 66-67 Pedal(front) 62-65 Pedal(rear) | 66-67 Clutch Pedal Shaft(left) 64(right) |
(left)The second generation clutch pedal stop arm is mounted perpendicular, while the earlier arms are at more like 45 degrees.
(right) I have one used 1st generation Pedal that utilizes a clip for retention and one that uses a wire clip.(right in picture). I don't know if this is an earlier design (pedal says 1964 on it), or a different OEM supplier.
| 0.830 | PEDAL,Clutch |
| 66-67 | Chevy | 3879717 |
| |
| 0.831 | BUSHING,Clutch Pedal |
| 62-68 | ALL | 3798256 | (5/8" dia. pedal shaft)-(4.626) |
| |
| 0.837 | RETAINER |
| 63-68 | ALL | 3828428 |
| |
| 4.625 | PEDAL ASSY., Brake |
| 62-66 | Chevy (exc. P.G.) | 3793879 |
| 67 | Chevy (exc. P.G.) | 3908345 |
| |
| 4.626 | BUSHING,Brake Pedal |
| 62-70 | ALL (exc. Pass.) | 3798256 A.R. | pedal,shaft (5/8") |
| 63-67 | Chevy (1st design) (exc. P.B.) |
| 65-67 | Pas (1st design) | 3830966 | pedal return spring bushing (1 1/16" I.D.) |
| 67 | Chevy (2nd design)(exc. P.B.) |
| 67-69 | Pass. (2nd design) (exc. P.B. |
| 68-70 | Pass. w/P.B. |
| 69 | Pass. w/Speed and Cruise Control | 3908768 | pedal return spring bushing (7/8" I.D.) |
| |
| 4.634 | SPRING, Brake Pedal |
| 62-66 | Pass., Chevy (exc. P.B) | 3854322 | pedal return |
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 and part numbers 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 won’t be sorry).
This is a fun and interesting part of the hobby!
