CO-244631 - COMP CAM HYDRAULIC CCH304A FITS HOLDEN 253-304-308 V8 1969-87
CO-244631
Part Number: |
CO244631 |
Grind Number: |
|
Engine Identification: |
|
|
Start Yr. |
End Yr. |
Make |
Cyl |
Description |
1969 |
1987 |
Holden |
8 |
Rough idle, strong power in mid range and top end -6500RPM. Needs 10-10.5:1 comp, 3.5-3.9 gear, hi-stall converter, modified heads etc. for serious use. |
Engine Size |
Configuration |
|
253-304-308cu. In. |
V |
|
|
Valve Setting: |
Intake - |
.000 |
Exhaust - |
.000 |
Hot/Cold - |
HOT |
|
Lift: |
Intake @Cam |
325 |
@Valve |
520 |
All Lifts are based
on zero lash and theoretical rocker arm ratios. |
|
Exhaust @ Cam |
325 |
@Valve |
520 |
Rocker Arm Ratio |
1.60 |
|
|
|
Cam Timing: |
TAPPET |
@ .0040 |
Lift: |
|
Opens |
Closes |
ADV Duration |
|
Intake |
38.0 BTDC |
78.0 ABDC |
296.0 |
|
Exhaust |
78.0 BBDC |
38.0 ATDC |
296.0 |
|
Spring Requirements: |
Part Number |
99838 |
Loads |
Closed |
112 |
LBS @ |
1.650 |
or |
1 21/32 |
|
Open |
313 |
LBS @ |
1.150 |
|
|
|
Recommended RPM range with matching components |
Minimum RPM |
3000 |
Maximum RPM |
6500 |
Valve Float |
7100 |
|
Cam Timing: |
TAPPET |
@.050 |
Lift: |
|
Opens |
Closes |
Max Lift |
Duration |
|
Intake |
10.0 BTDC |
46.0 ABDC |
108 |
236.0 |
|
Exhaust |
50.0 BBDC |
6.0 ATDC |
112 |
236.0 |
|