Quote:
Originally Posted by TRADERMIKE 2012
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To find the actual ICL, we placed the Dial indicator over the edge of the Intake Valves Hydraulic Lifter and measured the duration of the Cam @ .050" on both sides of the Valve duration Ramps by passing the .050" mark on the Dial Indicator first then moving toward the .100" mark first then rotating back to exactly 050", where we took our readings off the Degree wheel # and recorded that number, adding those numbers and dividing by two equals 112 degrees for the Intake c/l and 115 degrees for the Exhaust c/l, then to obtain the lobe separation angle we added these two numbers and divided by two equals 113.5 degrees. .
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When degreeing in a cam, ONLY the intake lobe is used. You want to find the position of the intake lobe relative to the crankshaft when the piston is at TDC. It was at 112*. Who knows were it is now that it was monkeyed with.