Often when I'm wheeling I find hills that my tires don't spin but my motor Boggs down. I know lower gears will help this but and motor upgrades that help with this?
agree that more motor wont help a ton. Gearing is where its at, are you in 4x4 hi when your engine boggs going up hills? shift to low range and use a higher gear. You wont be able to go as fast but will have all the torque you would ever need. When you install your lift and tires a regear will almost be a must as noted above.