What would need to be changed to make it work? Distributor would need "modified" to allow adjustment, as it is "fixed" originally. What about computer? looking for help and advice. I know you "can't" put a hi lift cam in a 95 Cherokee, but lets say we want to figure out how anyway...what would it take? Thx Mike
95 Cherokee- Hi lift cam?
- Thread starter l8zeno
- Start date
Depends on how big you want to go. If you are going really big, the factory EFI/computer gets to a level where it just can't do the job no matter what you do to it. That's why REALLY serious I6s have either been converted to carb, or they're wearing induction systems that cost more than my whole engine.
You said "high lift", increasing the lift without increasing the duration would be ideal unless you are going to really mod the shit out of that thing. The factory HO cam pulls to 5grand easy. Increasing the duration(which will HAVE to be done in order to increase the lift much), will also raise the RPM range at which the engine operates. A really long duration always requires a high compression, low gears, and if auto a stall converter. Lots of changes need to be done to utilize a long duration/high lift cam lobe, not just what physically needs to be changed in the engine to accomodate the camshaft. Your low RPM power production will be shot with a long duration, so if the appropriate changes aren't made the Jeep will be slower than before. You can do alot of stuff to optimize the 2.5l and 4.0l before a cam swap is needed, and all that other stuff is required for the new cam anyway......
Call the tech line at one of the camshaft manufacturers like Comp Cams, and ask for a recommendation. Have any information about the vehicle you can find on hand. Gearing, weight, compression ratio, other engine mods already done, size of torque converter if auto, transmission ratios.......
You said "high lift", increasing the lift without increasing the duration would be ideal unless you are going to really mod the shit out of that thing. The factory HO cam pulls to 5grand easy. Increasing the duration(which will HAVE to be done in order to increase the lift much), will also raise the RPM range at which the engine operates. A really long duration always requires a high compression, low gears, and if auto a stall converter. Lots of changes need to be done to utilize a long duration/high lift cam lobe, not just what physically needs to be changed in the engine to accomodate the camshaft. Your low RPM power production will be shot with a long duration, so if the appropriate changes aren't made the Jeep will be slower than before. You can do alot of stuff to optimize the 2.5l and 4.0l before a cam swap is needed, and all that other stuff is required for the new cam anyway......
Call the tech line at one of the camshaft manufacturers like Comp Cams, and ask for a recommendation. Have any information about the vehicle you can find on hand. Gearing, weight, compression ratio, other engine mods already done, size of torque converter if auto, transmission ratios.......
Bounty__Hunter
Super Moderator
I've got a Mopar Performance cam on the shelf soon to go into my 2.5L, just waiting on the new valve springs and retainers. You'll likely need to change these to accomodate the increase in valve lift.
I'd recommend the adjustable MAP sensor to richen the air/fuel ratio after installing the cam. Do't forget opening up the intake and exhaust to take full advantage of these mods.
I'd recommend the adjustable MAP sensor to richen the air/fuel ratio after installing the cam. Do't forget opening up the intake and exhaust to take full advantage of these mods.
Bounty__Hunter
Super Moderator
The new Quadratec catalog has roller rockers for the 2.5L and 4.0L that can be easily installed without a valve cover spacer. They're expensive, but would be worth it coupled with a performance cam and other mods.
