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Old 01-16-2007, 12:59 AM   #1
Join Date: Oct 2006
Posts: 42
4.0 motor question

what year did they switch the 4.0 over to a hydraulic roller cam? or have they done that yet?

im getting the feeling its still flat tappet.


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Old 01-16-2007, 09:50 AM   #2

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Same year they added muffler bearings.

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Old 01-16-2007, 01:19 PM   #3
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ha, thats funny.
i for some reason was thinking the newer 4.0 motors had roller cams in em.

guess i now know.

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