Engine Specifications
GENERAL SPECIFICATIONS
| Year |
Displ. |
Carburetor |
HP at RPM |
Torque (Ft. Lbs. at RPM) |
Compr. Ratio |
Bore |
Stroke |
| cu. ins. |
cc |
in. |
mm |
in. |
mm |
| 1979 |
417.1 |
6834 |
Fuel Inj. |
250@4000 |
360@2500 |
8.0:1 |
4.21 |
107 |
3.74 |
95 |
VALVES
| Engine & Valve |
Head Diam. In. (mm) |
Face Angle |
Seat Angle |
Seat Width In. (mm) |
Stem Diameter In. (mm) |
Stem Clearance In. (mm) |
Valve Lift In. (mm) |
| 6834 |
|
|
|
|
|
|
|
| |
Intake |
1.985-1.989 (50.9-51.0) |
45° |
45° |
.05-.08 (1.3-2.0) |
.3525-.3531 (8.955-8.970) |
|
|
| |
Exhaust |
1.673-1.681 (42.9-43.1) |
45° |
45° |
.06-.08 (1.5-2.0) |
.4303-.4311 (10.93-10.95) |
|
|
VALVE TIMING
| Engine |
INTAKE |
EXHAUST |
| Open (ATDC) |
Close (ABDC) |
Open (BBDC) |
Close (ATDC) |
| 6384 cc New |
|
|
|
|
| |
Left (36) |
12° |
25° |
32° |
19° |
| |
Right (37) |
10° |
23° |
34° |
21° |
| In Service |
|
|
|
|
| |
Left & Right |
14° |
27° |
30° |
17° |
CAMSHAFT
| Engine |
Journal Diam. In. (mm) |
Clearance In. (mm) |
Lobe Lift In. (mm) |
| 6384 cc |
|
|
|
| |
No. 1 |
1.363-1.364 (34.95-34.97) |
.0008-.0023 (.02-.06) |
..... |
| |
No. 2 & 3 |
1.967-1.968 (50.45-50.47) |
.0012-.0027 (.03-.07) |
|
| |
No. 4 & 5 |
1.987-1.988 (50.95-50.97) |
.0012-.0027 (.03-.07) |
|
PISTONS, PINS, RINGS
| Engine |
PISTONS |
PINS |
RINGS |
| Clearance In. (mm) |
Piston Fit In. (mm) |
Rod Fit In. (mm) |
Rings |
End Gap In. (mm) |
Side Clearance In. (mm) |
| 6384 cc |
.0006-.0010 (.015-.025) |
.0001-.0004 (.003-.011) |
.0002-.0006 (.007-.017) |
No. 1 |
.016-.023 (.40-.60) |
.0078-.0023 (.04-.06) |
| |
|
|
|
No. 2 |
.016-.023 (.40-.60) |
.0008-.0016 (.02-.04) |
| |
|
|
|
No. 3 |
.012-.018 (.30-.45) |
.0008-.0016 (.02-.04) |
CRANKSHAFT MAIN & CONNECTING ROD BEARINGS
| Engine |
MAIN BEARINGS |
CONNECTING ROD BEARINGS |
| Journal Diam. In. (mm) |
Clearance In. (mm) |
Thrust Bearing |
Crankshaft End Play In. (mm) |
Journal Diam. In. (mm) |
Clearance In. (mm) |
Side Play In. (mm) |
| 6834 cc |
2.728 (69.96) |
.0011-.0031 (.03-.08) |
No. 3 |
.004-.009 (.10-.24) |
2.143 (54.96) |
.0008-.0027 (.03-.08) |
.009-.015 (.22-.39) |
TIGHTENING SPECIFICATIONS
| Application |
Ft.Lbs (mkg) |
| Cylinder Head Bolts |
|
| |
Stage 1 |
29(4.0) |
| |
Stage 2 |
65 (9.0) |
| Main Bearing Caps |
58 (8.0) |
| Connecting Rod Caps |
36 (5.0) |
| Flywheel |
36 (5.0) |
| Crankshaft Pulley |
290 (30) |
| Camshaft Bearing |
36 (5.0) |
| Camshaft Sprocket |
72 (10) |
| Chain Tensioner Plug |
36 (5.0) |
| Hydraulic Valve Lifters |
36 (5.0) |