sturner74

I have a 99 4.0 I have pulled to rebuild. I am having trouble finding anything about cam/ injector upgrades. is there bigger injectors to match performance cams? does anyone have any information I can read on this?

navysrt8

Earlier this year, when I ordered my cam for my 2000, I called Comp and had them make a custom grind cam for my supercharged setup. I don't remember them having anything in their catalog for the coil-on-plug style 4.0's. They do have blanks for them though, and they can make you a custom grind for whatever you want. Just remember that the ecu on the 99+s won't let you go as extreme on the duration. I stuck with a 206/212 int/exh, and the ecu is still happy with it. Oh, and cost was just under $200.

Rogue4x4

https://www.jeepstrokers.com/forum/

...and for what it's worth coil on plug didn't happen until 00-01 models

cleenrob

i feel like adding a cam to a mostlystock 4.0L wont net you much gain unless you stroke the motor out