TIMING CHART
PART NUMBER:
201075
GRIND NUMBER:
z-75
ENGINE INFO:
CHEVY SMALL BLOCK V8 265-283-302-305-307-327-350-400 CU.INCHES
APPLICATION:
SPECIAL REMARKS:
SOLID
PRODUCT USE:
DRAG
RPM RANGE: 4000-8000
Valve lift is calculated with zero lash and rocker ratio of 1.5
INTAKE TIMING
DURATION:
320
deg.
OPEN:
52
BEFORE TDC
CLOSE:
88
AFTER BDC
CAM LIFT:
.380"
VALVE LIFT:
.570"
VALVE LASH:
.028
HOT
.030
COLD
EXHAUST TIMING
DURATION:
320
deg.
OPEN:
88
BEFORE BDC
CLOSE:
52
AFTER TDC
CAM LIFT:
.380"
VALVE LIFT:
.570"
VALVE LASH:
.028
HOT
.030
COLD
LOBE CENTER:
108
deg.
OVERLAP:
104
deg.
CAM ADVANCE:
0
deg.
THE ABOVE TIMING IS CHECKED AT
.020
(OPEN) LIFTER RISE
.020
(CLOSE)
The following timing is taken at .050" lifter rise and gives a more accurate determination of camshaft position.
INTAKE
DURATION:
274
deg.
OPEN:
29
BEFORE TDC
CLOSE:
65
AFTER BDC
EXHAUST
DURATION:
274
deg.
OPEN:
65
BEFORE BDC
CLOSE:
29
AFTER TDC
RECOMMENDED ISKY CAM KIT PARTS AND SETUP INFORMATION
LIFTERS:
202-H
LIFTER TYPE:
SOLID
SPRING:
6005
TYPE:
DUAL W/DAMPER
DIA.:
1.430"
RATE:
275
lbs per inch
INSTALLED HEIGHT:
1.750"
SEAT PRESSURE:
135
lbs
OPEN PRESSURE:
285
lbs
COIL BIND:
SPRING SHIMS:
# 2
STEEL RETAINERS:
507-ST
TITANIUM RETAINERS:
60-TI
PUSHRODS:
203-HG
TYPE:
NON-ADJ HEAT TREATED
LENGTH:
7.781"
DIA.:
5/16"
ROCKER ARMS:
204
TYPE:
ROLLER
RATIO:
1.5
VALVE LOCKS:
VL-32
VALVE LOCKS:
VL-32
REV KIT:
home
|
what's new
|
tech info
|
news
|
catalog
|
apparel
|
about
|
contact
© 2002 Isky Racing Cams. All rights reserved.
