Replacing the Cam on a 4L HO engine

Is it possible for me to get a better cam, longer duration etc... for my 98 HO engine. If yes what did you notice after? gains ... etc...
If not, whats involved in doing so...
want some more juice out of my XJ !

The cam is usually the last step up the ladder of performance mods for the 4.0 because it involves tearing apart half of the engine. It's a full day's work. Go to my site and take a look at the mods that I did to my old 4.0 before I swapped in the stroker. I basically did all the external bolt-ons first and then finally ported the head and raised the CR. I still had the stock cam by that point but decided that rather than do a cam swap on a 174k mile old engine to gain 9hp/15lbft, I'd build a stroker instead to gain 23hp/41lbft.
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Dino's "Mean Green Machine"
1992 XJ Laredo 4-dr - 4.6L I6 HO Stroker - 181k miles - AX15, NP231, D35c, D30

263hp@4900/321lbft@3300-3800, 1/4 mile = [email protected], 0-60 = 5.8secs
Websites - Jeep 4.0 Performance, 4.6L Stroker Build-Up, Dino's Jeep Tricks

ok, i understand the deal

yea, I'm in the process of a tear down, and it would be nearly impossible to do it with the engine still in the jeep.

I agree with dyno try some "bolt on's" I recomend an intake and TBS it makes that 4.0L sound like it should. and its only ~$100 for all of it.

good luck!