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 ISKY CAMS 201278 SBC HYDRAULIC CAMSHAFT
201278 Click to enlarge

ISKY CAMS 201278 SBC HYDRAULIC CAMSHAFT

 ISKY CAMS 201278



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ISKY CAMS 201278


SBC HYDRAULIC CAMSHAFT

ISKY - Grind No./Type 278-MEGA HYDRAULIC.450 lift rule class; banked 1/4-3/8 mile tracks.RPM-Range 2000-6400Valve Lift - INT .450 EXT .450Valve Lash Hot - INT .000 EXT .000ADV Duration - INT

ISKY - Grind No./Type 278-MEGA HYDRAULIC.450 lift rule class; bankePART NUMBER: 201278 GRIND NUMBER: 278-mega
ENGINE INFO: CHEVY SMALL BLOCK V8 265-283-302-307-327-350-400 CU.IN. APPLICATION:
SPECIAL REMARKS: HYDRAULIC PRODUCT USE: OVAL

RPM RANGE: 2500-6800
Valve lift is calculated with zero lash and rocker ratio of 1.5
INTAKE TIMING DURATION: 278 deg.
OPEN: 33 BEFORE TDC
CLOSE: 65 AFTER BDC
CAM LIFT: .30"
VALVE LIFT: .450"
VALVE LASH: . HOT
. COLD
EXHAUST TIMING DURATION: 278 deg.
OPEN: 65 BEFORE BDC
CLOSE: 33 AFTER TDC
CAM LIFT: .30"
VALVE LIFT: .450"
VALVE LASH: . HOT
. COLD

LOBE CENTER: 106 deg. OVERLAP: 66 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: 234 deg.
OPEN: 11 BEFORE TDC
CLOSE: 43 AFTER BDC
EXHAUST DURATION: 234 deg.
OPEN: 43 BEFORE BDC
CLOSE: 11 AFTER TDC


RECOMMENDED ISKY CAM KIT PARTS AND SETUP INFORMATION
LIFTERS: 202-HY LIFTER TYPE: HYDRAULIC
SPRING: 205-D TYPE: SINGLE W/DAMPER DIA.: 1.260" RATE: 310 lbs per inch
INSTALLED HEIGHT: 1.700" SEAT PRESSURE: 115 lbs OPEN PRESSURE: 268 lbs
COIL BIND: 1.160"
SPRING SHIMS: # 4
STEEL RETAINERS: 707-ST
TITANIUM RETAINERS:
PUSHRODS: 203-HG TYPE: HEAT TREATED NON Adj LENGTH: 7.781" DIA.: 5/16"
ROCKER ARMS: 204 TYPE: roller RATIO: 1.5
VALVE LOCKS: VL-32
VALVE LOCKS: VL-32

Notes:

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