24/4/2014 Isky Timing Chart
Print Timing Tag
TIMING CHART
PART NUMBER: 231288 GRIND NUMBER: RR-288
ENGINE INFO: CHEVY II 6 CYLINDER 194-230-250 CU.IN. APPLICATION:
SPECIAL REMARKS: SOLID ROLLER PRODUCT USE: OVAL
RPM RANGE: 3000-6500
Valve lift is calculated w ith zero lash and rocker ratio of 1.75
INTAKE TIMING EXHAUST TIMING
DURATION: 288 deg. DURATION: 288 deg.
OPEN: 38 BEFORE TDC OPEN: 70 BEFORE BDC
CLOSE: 70 AFTER BDC CLOSE: 38 AFTER TDC
CAM LIFT: .30" CAM LIFT: .30"
VALVE LIFT: .525" VALVE LIFT: .525"
VALVE LASH: .02 HOT VALVE LASH: .02 HOT
.02 COLD .02 COLD
LOBE CENTER: 106 deg. OVERLAP: 76 deg. CAM ADVANCE: 0 deg.
THE ABOVE TIMING IS CHECKED AT .020 (OPEN) LIFTER RISE
.020 (CLOSE)
The follow ing timing is taken at .050" lifter rise and gives a more accurate determination of camshaft position.
INTAKE EXHAUST
DURATION: 240 deg. DURATION: 240 deg.
OPEN: 14 BEFORE TDC OPEN: 46 BEFORE BDC
CLOSE: 46 AFTER BDC CLOSE: 14 AFTER TDC
RECOMMENDED ISKY CAM KIT PARTS AND SETUP INFORMATION
LIFTERS: 1241-R (12) LIFTER TYPE: SOLID ROLLER
SPRING: 6205 (8) TYPE: dual w /dam per DIA.: 1.430" RATE: 320 lbs per inch
INSTALLED HEIGHT: 1.812" SEAT PRESSURE: 175 lbs OPEN PRESSURE: 350 lbs
COIL BIND: 1.160"
SPRING SHIMS: #2
STEEL RETAINERS: 507-ST (8)
TITANIUM RETAINERS: 60-TI (8)
PUSHRODS: 233 (8) TYPE: NON-ADJUSTABLE LENGTH: 9.687" DIA.: 16-May
ROCKER ARMS: 204-96 (8) TYPE: ROLLER RATIO: 1.72
VALVE LOCKS: VL-32 (16)
VALVE LOCKS: VL-32 (16)
REV KIT:
home | what's new | tech info | news | catalog | apparel | about | contact
© 2002 Isky Racing Cams. All rights reserved.
http://iskycams.com/timingchart.php?product_number=231288 1/1
