general 258/4.0 question -
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post #1 of 4 Old 09-23-2011, 09:26 PM Thread Starter
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1983 FSJ Cherokee 
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general 258/4.0 question

Picked this up today at the Summit scratch and dent bin (didn't pay that much for it though) I am asking if this cam setup would be worth putting im my engine. What I have is 4.0 HO head on a 258, ran it for the past 5 years. Now I am putting on a 2000 intake along with fuel injection and a 62mm throttle body.

Any cam guys out there know what I can expect from this cam in set up?


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post #2 of 4 Old 09-24-2011, 08:39 AM
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1986 CJ7 
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The specs for that cam say that it's not for fuel injection. It's a fairly agressivve cam for the 258. Would be interesting to see how it worked.

It's just a Jeep, and if you don't wheel it once in a while, it's not even that.
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post #3 of 4 Old 09-25-2011, 01:36 PM
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1977 CJ5 
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Location: Arlington TX
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I have the comp cams high energy with the 260h grind and it is not supposed to be for fi either. I'm running it with a Howell tbi and it runs great. I also have the 4.0 head and those springs will not work with it because the retainers are a different size than came on the 258 head. I ended up using the stock springs on the 4.0 head and have had no issues so far. And as far as performance its much better than my original 232,much more get up and go when I need it.
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post #4 of 4 Old 09-25-2011, 01:40 PM
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Ohh yeah and that timing chain may or may not fit under your timing cover. I called comp cams when mine lacked about .020" of fitting and they said it was a known issue with some of the timing covers but couldn't tell me what years fit and which ones don't.
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