These performane cams will require longer valve stems or thicker
lash pads.When larger
valves are installed, it is important to check the valve to valve
clearance at overlap.
3.4,
3.8, 4.2 LITRE
GRIND
NO.
SEAT
DURATION
.050”
DURATION
CAM
LIFT
LASH
APPLICATION
STOCK
252
225
.375
I
.005
E
.007
2
BOLT FLANGE
65-14
260
224
.405
I
.010
E
.012
PERFORMANCE
FOR 2 BOLT CAM
STOCK
270
227
.394
I
.011
E
.013
4
BOLT FLANGE
67-15
268
244
.396
I
.010
E
.012
PERFORMANCE
FATTER THAN 4 BOLT CAM
68-15
272
240
.389
I
.013
E
.014
PERFORMANCE
GRIND
685-10
274
240
.430
I
.007
E
.009
HIGH
LIFT PERFORMANCE
69.5-9
278
226
.376
I
.007
E
.011
JAGUAR
D-TYPE
LE
MANS
69.5-11
278
247
.378
I
.008
E
.010
PERFORMANCE
FATTER THAN D--TYPE
70-13
280
245
.444
I
.009
E
.012
FAST
ACTING CAM
715-11
286
245
.405
I
.008
E
.011
HOT
STREET
715-16
286
251
.457
I
.011
E
.013
HOT
STREET. REQUIRES WELDING
OTHER
STREET AND RACE GRINDS AVAILABLE.WELDING
IS OFTEN REQUIRED.
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