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Wow. This needs updated. I had my timing jump which snowballed into killing my starter and about five teeth ripped off of the flywheel. Since the motor is starting to have blow by again, I decided to do a 4.0 swap. Located a 4.0/aw4 combo from a 98 XJ and dragged it home. Then went and pulled a full harness with ecu and trans controller from a different 98 XJ.

Also started to disassemble the stuff on the 4.2. Still need to buy a bunch of parts and send the harness off to get thinned out and made to mate the CJ to the 4.0. Fun times ahead.

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Not sure how I missed the motor swap! How’s it going?


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Just acquiring parts at this point I will get to it after the new year
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Started tearing into the 4.0

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You going to run the 4.2 Intake with the holley sniper setup, or convert to the multi port 4.0 EFI?


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You going to run the 4.2 Intake with the holley sniper setup, or convert to the multi port 4.0 EFI?


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Already sold the sniper and the offy intake from the dead 4.2. Going to use the multiport injection for the 4.0.
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Already sold the sniper and the offy intake from the dead 4.2. Going to use the multiport injection for the 4.0.


Cool! How’d you like it? I’m trying to determine if worth added costs for self learning vs the standard TBI like Howell or Affordable Fuel Injection offer.


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Cool! How’d you like it? I’m trying to determine if worth added costs for self learning vs the standard TBI like Howell or Affordable Fuel Injection offer.


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I loved my sniper. The thing was dead on reliable and no cold start issues or warming up needed. It had two little issues, which are well known. I had to reset the idle air control by covering it and setting the idle. This was needed to keep from having a super high idle. Took 5 minutes max. The other was the fact that the linkage for the throttle cable connection is not high enough to get enough leverage so you get horrible throttle tip in. I added a flat piece of metal with 2 holes in it to raise the mounting point 1/2 an inch. Solved it. But Holley sells a progressive link for $12. They should just include it in the kit.

But again, I loved the sniper and would do it again.
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I loved my sniper. The thing was dead on reliable and no cold start issues or warming up needed. It had two little issues, which are well known. I had to reset the idle air control by covering it and setting the idle. This was needed to keep from having a super high idle. Took 5 minutes max. The other was the fact that the linkage for the throttle cable connection is not high enough to get enough leverage so you get horrible throttle tip in. I added a flat piece of metal with 2 holes in it to raise the mounting point 1/2 an inch. Solved it. But Holley sells a progressive link for $12. They should just include it in the kit.

But again, I loved the sniper and would do it again.


Were you using the timing control too? Holley has the dual sync distributor to allow for easy timing control


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Founded in Nov 2011 as an online resource for off road enthusiasts in and around Virginia, we are growing to include outdoor related hobbies, small automotive and 4x4 projects, advertising and forum support for 4x4, Jeep, etc... Clubs, Advertising for off road related manufacturers, and more! We aim to be the goto resource for all things off the beaten path in our great state!

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