VALVE DURATION DURATION GRIND DESCRIPTION
REGRIND
HARD NEW .406/.430
232/252
214/234
94/158i
Very broad power range with
good idle for stock fuel injected engines.
N/A
N/A
.394/.430
242/252
224/234
148i/158i
Good overall power for fuel
injected or carburated engines.
N/A
N/A
.410
278
254
135
Strong mid and upper end
power for carburated racing engines only.
N/A
N/A
LIFT
IN DEGREES
@.050 DEGREES
NUMBER
WELD
CAM
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