3.7 camshaft Specs

[aussie]

Hi guy Have finally had the 2 camshafts read one is a 4bbl one the other is a after market one

-----Advertised.Valve.Timing-----
(1) (2)
.............Intake.Opens ---- 27.2 ---------- 20.7
............Intake.Closes ---- 75.2 ---------- 71.3
...........Exhaust.Opens ---- 63.5 ---------- 70.6
...........Exhaust.Closes ----15.5 ---------- 20.0
............. Duration.................
.....................Intake ----- 282 ---------- 271.9.
...................Exhaust ---- 259.1 --------- 270.6

........Valve.Timing@50...........
.......... Intake.Opens ---- -2.0 ---------- 0.1
..........Intake.Closes ---- 46.0 ---------- 50.7
.........Exhaust.opens ---- 39.8 ---------- 43.4
.........Exhaust.closes ---- -8.2 ---------- -7.2
.................Duration..............

..................Intake ---- 224.0 ---------- 230.8
................Exhaust ---- 211.6 ---------- 216.2
....................Valve.Lift..........
.....................Intake ----- 487 --------- 530
...................Exhaust ----- 487 --------- 498

........Lobe.Separation ---- 114 ---------- 115.3

[THEFERMANATOR]

The aftermarket one looks like they ground it with efi in mind.

[aussie]

Yes just trying to work out why the intake has more duration any thoughts

[aussie]

Anyone got any Ideas why the intake has more duration than the exhaust

[THEFERMANATOR]

Originally Posted by aussie

Anyone got any Ideas why the intake has more duration than the exhaust

If I had to guess, I would say it was due to the extra lift.