Geez now that’s an upgrade! Looks killerYes, I went with 4.88's and 37's for 6+ months and loved it! But a couple months ago I upgraded to 1 ton's and 40's so I went with 5.13's now.
Thanks.....I freakin love it!! I have PSC Hydro RAM steering coming in a couple weeks as well.
Hey Rob,
Your math makes sense, but you left out low range. The fact of the matter is 470ftlbs is plenty to snap a Dana 60 or even 80 shaft if you happen to be at peak torque in 4LO with some wheel speed and suddenly find 100% traction regardless of gear ratio choice. The math is misleading. Aside from shock loading from suddenly gaining traction on a spinning wheel, your shafts just aren't ever going to see those peak loads. Even on a prepped track you aren't putting 10k+ ftlbs through jeep tires without a whole bunch of wheel slip. Even the 2.0t puts out 22,740ftlbs to the wheels in a stock Rubicon, which if all the traction is available at 1 wheel isn't divided by 4, more than enough to break parts. With the 5.38's and the tune on ours we are at a theoretical max of 35,400ftlbs, but haven't broken a stock shaft on 38's yet wheeling all over the country(knock on wood). Pick the gears you want for your driveability and run it. The math is misleading.
I’ve got 68.5” Dynatrac XD60s with 5.38s and 40s and I feel like it’s a little overgeared on the highway. 5.13s would likely be perfect. I bought the axles as-is because I didn’t want to wait months for a set of new axles but in hindsight I would have gone 5.13s/72.5” wide and just waited.
Yeah.....I played with the gear charts for days, flipping back and forth on 5.38's vs 5.13's and after running my Jeep in manual mode on the freeway at the given rpm's to see how it felt I decided on 5.13's. 4.88's would be better for the freeway, but the 5.13's get killer acceleration with the 40's. I went with the 72' D60's because I was told in order to get the steering throw the same as the D44's I needed to go that length. My Jeep gets dropped off at the shop in the morning for the new PCS Hydro Ram steering and 4.5" Metalcloak springs.
Old thread revival. What is/was your setup here?Hey Rob,
I went with 72" Fusion 4x4 axles with 5.13 gears and Eaton e-lockers front and rear. Here's a link to my setup.
https://fusion4x4.com/collections/j...ngpin-60-elite-full-float-60-jeep-wrangler-jl
The set up on that was Fusion 70 inch, 1 ton axles front and rear, 2 1/2 ton steering with 5 1/2 inch springs on Metalcloak arms with Rocksport shocks.
You still have stock transfer case or Atlas?
Yes, I was running the stock transfer case and no I didn’t have any issues with the clutches. Yes, I was running a Tazer when I wanted to run it into wheel drive.
