H- 260- 2 camshaft - Ol. 39D 260- 455 V8 67- 84
Good low end torque, smooth idle, daily usage, off road, towing, economy, also mild turbocharged, 2200- 2600 cruise RPM, 8.0 to 9.5 compression ratio advised.
| Part Number: |
803901 |
Grind Number: |
H-260-2 (REPLACES HMV-260-2) |
| Engine Identification: |
|
|
| Start Yr. |
End Yr. |
Make |
Cyl |
Description |
| 1967 |
1984 |
OLDSMOBILE |
8 |
Good low end torque, smooth idle, daily usage, off road, towing, economy, also mild turbocharged, 2200- 2600 cruise RPM, 8.0 to 9.5 compression ratio advised. |
| Engine Size |
Configuration |
|
| 260-455 C.I. |
V |
| |
| Valve Setting: |
Intake - |
.000 |
Exhaust - |
.000 |
Hot/Cold - |
HOT | |
| Lift: |
Intake @Cam |
2847 |
@Valve |
456 |
All Lifts are based
on zero lash and theoretical rocker arm ratios. |
| |
Exhaust @ Cam |
3027 |
@Valve |
484 |
| Rocker Arm Ratio |
1.6 |
|
| |
| Cam Timing: |
TAPPET |
@ .004 |
| Lift: |
|
Opens |
Closes |
ADV Duration |
| |
Intake |
19 BTDC |
61 ABDC |
260 ° |
| |
Exhaust |
69 BBDC |
23 ATDC |
272 ° | |
| Spring Requirements: |
| Part Number |
96803 |
| Loads |
Closed |
107 |
LBS @ |
1.700 |
or |
1 45/64 |
| |
Open |
255 |
LBS @ |
1.240 |
|
| |
| Recommended RPM range with matching components |
| Minimum RPM |
1200 |
| Maximum RPM |
4800 |
| Valve Float |
5400 | |
| Cam Timing: |
TAPPET |
@.050 |
| Lift: |
|
Opens |
Closes |
Max Lift |
Duration |
| |
Intake |
(5) ATDC |
29 ABDC |
107 |
204 |
| |
Exhaust |
45 BBDC |
(9) BTDC |
117 |
216 | |
|
| |
