A. Measure camshaft lobe height (B) on one
exhaust and one intake lobe.
B. Measure base circle (C) of one exhaust and
one intake lobe.
C. Subtract base circle (STEP B) from lobe
height (STEP A). The difference is actual
lobe lift (A).
D. Specified camshaft lobe lift (A) is .3300 in.
AIR INLET AND EXHAUST SYSTEM
TESTING AND ADJUSTING
PROCEDURE FOR MEASURING
To find lobe lift, use the procedure that follows:
Maximum permissible difference between actual
lobe lift (STEP C) and specified lobe lift (STEP D) is
.010 in. (0.25 mm).