But he was easy on the throttle too.......Do not be like this guy on the Wrangler side running 42's on stock axle 3.45 gears and then complaining why he cannot get warranty on his rear ring gear after stripping it out.
https://www.jlwranglerforums.com/forum/threads/broken-ring-gear.115668/
The amount of deleted posts there by homie is astronomical.Do not be like this guy on the Wrangler side running 42's on stock axle 3.45 gears and then complaining why he cannot get warranty on his rear ring gear after stripping it out.
https://www.jlwranglerforums.com/forum/threads/broken-ring-gear.115668/
Something I read on the wrangler forum which stuck with me is that breakage on the trail is not a matter of if, but when. The consensus on that thread was to choose your weak point and be prepared. I think the driveline weak link of choice with those guys was U-joints and second was axles.
Congrats. Bet that Jeep looks very cool. IMHO you are totally justified in your concerns. The stock tires mated to that gear ratio are 33's. Yes the net difference in radius (lift) is only 2 inches, however the weight difference alone between a 33 and a 40 is just huge. The additional tension this puts on the whole drive train is significant. Not sure exactly what to gear down to. There will be 1000 opinions on that subject. (I'm thinking 5.33) In addition, I suggest that when you re-gear that you add chrome molly axles to your shopping list. It won't add much, if anything to the labor cost. Remember that during trail use tires will spin and grab, spin and then grab. All it takes is for the spin on a rock during a steep climb, get too fast and then suddenly regain traction grabbing hard...then SNAP. What if you're out there alone? Even if you aren't it might take a rescue vehicle to get you back to civilization. That'll be pricey and then consider the cost if you are in an area far away from home. No one ever said this was an inexpensive past time. Best of luck.
If you're careful you can wheel 40s on stock axles
4L is 5.13s is even better
4L is a dumb answer, You are not driving around on surface streets in 4L or on the highway in 4L, aka the 98% of the driving you will be doing. In those use cases when you are in 2H rolling on 40's on stock 3.73 gears it will suck. You will have very slow acceleration, the trans will be working hard aka more slipping of clutches) to get that thing to roll from a dead stop and will likely rarely even use the last two trans gears at high way speed.
