I'm putting 33x10.5's on my 98 TJ with an AX-15 and 4.0L. The motor is going to be stroked and should have peak torque somewhere around 3000RPM hopefully. It will be an all purpose rig, 85% highway cruising during the week, probably 80 miles per day commuting almost all highway. Will play in the woods on the weekends. Mostly rough fire roads, logs, random rocks. Not a dedicated rock crawler or mud bogger.
What do you think the ideal RPM's would be for best MPG on the highway but also good for off-roading when needed? I tend to drive the speed limit or so, about 65-70MPH on the highway.
I was thinking 2500RPM is a good middle ground to shoot for. The .79 5th OD gear, with 33's and 4.56's gives me 2400RPM at 65mph . With 4.88's I'm at 2550RPM at 65mph.
Would 4.56's or 4.88's be better for fuel economy?
Yes I know it's a Jeep not a Honda, so please don't tell me I should have bought a Honda Civic. I somewhat care about the environment and if I can burn less gas while having fun, I'll do it. And if I'm going through everything and re-gearing I might as well try and get the best gas mileage I can while still having fun in the woods.
Thoughts?
What do you think the ideal RPM's would be for best MPG on the highway but also good for off-roading when needed? I tend to drive the speed limit or so, about 65-70MPH on the highway.
I was thinking 2500RPM is a good middle ground to shoot for. The .79 5th OD gear, with 33's and 4.56's gives me 2400RPM at 65mph . With 4.88's I'm at 2550RPM at 65mph.
Would 4.56's or 4.88's be better for fuel economy?
Yes I know it's a Jeep not a Honda, so please don't tell me I should have bought a Honda Civic. I somewhat care about the environment and if I can burn less gas while having fun, I'll do it. And if I'm going through everything and re-gearing I might as well try and get the best gas mileage I can while still having fun in the woods.
Thoughts?