upgrade cam ??

[jasonsxj]

need info on a good r.v. cam or torque cam ?? but don't won't to have it mess with the computer or anything else ?? i do have a 2000 intake and cold air intake !! any help on a good cam for the 4.0l would be great ?? and brand and power of the cam ?? did'nt search :looser: thanks jason

 

[RCman]

A cam alone won't add all that much power to the 4.0L.
That being said I'm running a Comp Cams A6 X4 250H-13 (SummitRacing Link to the full kit) camshaft in mine with good results.

Oh, and some searching might help...

 

[D.I.T.A]

A cam alone won't add all that much power to the 4.0L.
That being said I'm running a Comp Cams A6 X4 250H-13 (SummitRacing Link to the full kit) camshaft in mine with good results.

Oh, and some searching might help...

what differences did you feel with this cam . sorry for the hijack

 

[jasonsxj]

A cam alone won't add all that much power to the 4.0L.
That being said I'm running a Comp Cams A6 X4 250H-13 (SummitRacing Link to the full kit) camshaft in mine with good results.

Oh, and some searching might help...

your right !! does the cam you put in mess with the computer ?? it is actually on the engine stand with 30,000 miles on it mild build stock cam though !! just thought since it was on stand might as well put a good pull'en cam in it ?? just don't want to mess anything up ??!! :dunno:

 

[sjkimmel99]

Crower 44243 here. Never drove the jeep (a 96) without it so can't compare to stock. The computer in mine doesn't seem to care. Not sure why it would unless it couldn't get a balanced a/f ratio.

 

[RCman]

what differences did you feel with this cam . sorry for the hijack

Can't say about just the cam, there was other engine mods that went along with it.

your right !! does the cam you put in mess with the computer ?? it is actually on the engine stand with 30,000 miles on it mild build stock cam though !! just thought since it was on stand might as well put a good pull'en cam in it ?? just don't want to mess anything up ??!! :dunno:

No issues with the ECU in my '97.
If it's on the stand then you might as well...

 

[jasonsxj]

Can't say about just the cam, there was other engine mods that went along with it. No issues with the ECU in my '97.
If it's on the stand then you might as well...

cool thanks for the info !! anybody else ?? thanks alot :helpme:

 

[badron]

IMO the stock cam is sweet as is. The stock engine makes 85 % of it's max torque at idle so you going to be hard pressed to find a better bottom end cam.
Your 2000 should have one of the better stock cams for towing. In that it moves the torque peek a bit up the RPM range compared to early cams. Without giving up anything/much at the bottom.

 

[Talyn]

I've used the Comp Cam 68-231-4 and it plays nice with the PCM. I haven't heard of any street type cam that the PCM bitches about. I think our PCMs are actually pretty forgiving.

The reason the PCM would complain isn't due to the AFR... its due to the LSA and overlap of the valves, vacuum, and idle quality.

 

[Dr. Dyno]

I used to have the Crane 753905 cam (almost identical spec to CompCams 68-231-4) in my 4.6 stroker until I had to swap my old stock cam back in. No significant difference between the two performance-wise but with the stock cam/valve springs, I don't have any valvetrain noise and the engine's sweeter.

 

[jasonsxj]

thanks guys alot of good info !!~

 

[selarep]

The valve springs in the kit listed above wont work! Heads up.

 

[RCman]

The valve springs in the kit listed above wont work! Heads up.

Are you talking about the K68-232-4 kit I linked here? If so, you are correct, they are for a 258 and won't work.
I linked the wrong one (right cam, wrong kit/package), I am using this Comp Cams SK68-232-4 kit with Mopar Performance springs.

 

[selarep]

Exactly. I called comp cams and they told me the valve springs in that kit are the wrong ones. They suggested to used mopar springs. If they know those springs won't work, why do they sell that kit?

 

[RCman]

If they know those springs won't work, why do they sell that kit?

...they are for a 258 ...

 

[jasonsxj]

Are you talking about the K68-232-4 kit I linked here? If so, you are correct, they are for a 258 and won't work.
I linked the wrong one (right cam, wrong kit/package), I am using this Comp Cams SK68-232-4 kit with Mopar Performance springs.

can you tell a big difference in the cam swap ? like you would in a v8 ??

 

[RCman]

can you tell a big difference in the cam swap ?

Like I mentioned when Nick (D.I.T.A) asked, I really can't say as there was a whole heck of a lot else that changed with the engine when it went back it. I'm sure there was a difference, but I can't tell which was from what. It does idle smoother than a stocker though.

like you would in a v8 ??

I think a cam swap would have much more effect on a typical V8 than our I6's.

 

[Talyn]

Same here. When I put the 68-232-1 into my 4.0L I also did a head swap and header at the same time, but the combo of all that felt quite a bit different.

 

[selarep]

I'm putting in the extreme cam and comp cams timing set this week, its a stock motor but the head is getting a lot of work done. .030" take off, a extensive valve job and some minor polishing on the ports. I had to use the mopar springs too.

 

[Talyn]

If its not too late check out the JP Performance billet timing set.