Part Number
Intake Duration
@ .050"
Exhaust Duration 
@ .050"
Intake Lift
Exhaust Lift
Intake 
Lobe Center Line
Exhaust Lobe Center Line
Overlap 
(in degrees)
E904
242
254
.459
.485
110
122
90
E1133
246
246
498
498
106
110
65
E901
254
254
485
485
110
118
86
E917
262
273
512
536
108
116
105
E1025
1074
1074
557
557
108
112
92
E1131
240
250
521
521
104
108
75
E1091
256
264
504
504
99
111
81
E1090
256
264
537
557
99
111
81