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Unread 12-29-2009, 03:35 PM   #1
DanZ51
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2004 TJ Wrangler 
 
Join Date: Feb 2009
Location: Wallingford, VT, Vermont
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stock camshaft specs?

Does anyone have any info on factory camshaft specs? In particular 2004, but I'd imagine any of the F.I. engines would be the same or similar.



COMP Cams - Cam Details

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Unread 12-29-2009, 04:12 PM   #2
GOLENJEEPTJ
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2002 TJ Wrangler 
 
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For curiosity... why?
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Unread 12-29-2009, 05:53 PM   #3
Unlimited04
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The stock '96 and later Jeep 4.0 camshaft is a dual pattern cam with the following specs:
Advertised duration int./exh.: 256.0/260.0 deg
Duration @ 0.050" lift int./exh.: 188.0/192.0 deg
Valve lift int./exh.: 0.408"/0.414"
Lobe separation angle: 107 deg
Intake centerline angle: 114 deg
Valve overlap (advertised): 43 deg
IVO: 20 deg ATDC (0.050" lift)
IVC: 28 deg ABDC
EVO: 16 deg BBDC
EVC: 4 deg BTDC

Sourced from here: http://jeep4.0performance.4mg.com/tech_specs.html
Another source showing almost every cam for the 4.0L/4.2L: http://www.angelfire.com/my/fan/Jeep4.0Camshafts.htm

Last edited by Unlimited04; 12-30-2009 at 10:37 AM..
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Unread 12-29-2009, 05:59 PM   #4
never monday
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changing cams won't help much

regearing is more effective
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Unread 12-30-2009, 10:32 AM   #5
DanZ51
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WOW Thanks Unlimited04. I knew someone would have this info. I tried searching for this info and came up empty.

As for the other "tools".....
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