ISKY Perf. 256/262 Split Duration Camshaft for IH 266, 304, 304 or 392 V8 Engines
Performance camshaft. Great low end torque. Decent vacuum
Fits ALL IH International Harvester 266, 304, 345, and 392
RPM RANGE: 1800-5000
Valve lift is calculated with zero lash and rocker ratio of
INTAKE TIMING DURATION: 256 deg.
OPEN: 18 BEFORE TDC
CLOSE: 58 AFTER BDC
CAM LIFT: .281"
VALVE LIFT: .450"
EXHAUST TIMING DURATION: 262 deg.
OPEN: 61 BEFORE BDC
CLOSE: 21 AFTER TDC
CAM LIFT: .290"
VALVE LIFT: .465"
LOBE CENTER: 110 deg.
OVERLAP: 39 deg.
CAM ADVANCE: 0 deg.
THE ABOVE TIMING IS CHECKED AT .020 (OPEN) LIFTER RISE
The following timing is taken at .050" lifter rise and
gives a more accurate determination of camshaft position.
INTAKE DURATION: 202 deg.
OPEN: -9 BEFORE TDC
CLOSE: 31 AFTER BDC
EXHAUST DURATION: 208 deg.
OPEN: 34 BEFORE BDC
CLOSE: -6 AFTER TDC
RECOMMENDED ISKY CAM KIT PARTS AND SETUP INFORMATION
LIFTER TYPE: HYDRAULIC
ISKY High Performance 270 Duration Camshaft for IH 266, 304, 304 or 392 V8 Engines
Scout, Traveler, Terra and Travelall are trademarks of the International Truck & Engine Corporation.
Their use has been licensed under Scout/Light Line Distributors, Inc. -IH PARTS AMERICA is a Scout/Light Line Authorized Dealer.
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