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Old 06-10-2019, 09:23 PM
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3.5 inch lift new driveshafts?

I'm about to buy a metalcloak game changer lift. Originally I was going to get a 2.5 inch lift, but now I'm thinking I might want a 3.5 inch lift. Would I need a new front driveshaft with a 3.5 inch lift? I've seen other treads on this issue and the issue seems to be when you are offroading and not just driving down the street. I get to Offroad maybe a few times a year so will I be ok if I keep the stock driveshafts for a little bit? This is my DD
Also does anyone have any input to a 2.5 vs 3.5 game changer? I'm not doing a crazy build, just 35s.

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Old 06-10-2019, 11:14 PM   #2
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You can probably run your stock shaft for a while (with exhaust spacers to avoid melting/tearing the boot on the cross pipe, though even with an aftermarket shaft you may still want spacers because the MC shocks have such long travel, I'm running into this), but consensus seems to be that the stock shaft will wear out sooner or later from running at the higher angle. Hard to tell how long you'll get, maybe 6 months, maybe 3 years, of course depends on how much and how hard you drive it.

As for 2.5 vs 3.5, at 3.5 you probably need to start looking at more supporting mods like steering upgrades, as far as I understand (hi steer kit, drag link flip). 2.5 is plenty for 35s unless you're looking for a ton of clearance with stock fenders, then 3.5 would be better. But 2.5 and flats will get about the same. I tossed around the decision and went 2.5 because I wasn't necessarily trying to build for huge capability and don't plan on running 37s anytime soon, so 2.5 gets the job done while keeping CG a bit lower. And in the end you can always change springs since the rest of the kit is the same, though if you really are having a hard time maybe just go 3.5 and be done, as I imagine more people wish they went bigger than the other way around.

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Old 06-11-2019, 12:50 AM   #3
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You will definitely need a front driveshaft.

3.5 pushes the limit of caster and driveline angles, and also is getting to the point of drag link flip being beneficial.

If you don’t want to do these things, get the 2.5.


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Old 06-11-2019, 01:51 AM   #4
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I run 3.5" MetalCloak lift and I'm still running the stock front/rear driveshaft with exhaust spacers. Everything works out fine, but I will be upgrading driveshafts as I continue to move forward with axle upgrades. Also I have upgraded my steering to the MetalCoak HD steering kit only because I bent my stock tie-rod on a rock when wheeling not for any other reason.
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Old 06-11-2019, 11:50 AM   #5
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Some of this will depend on your build. If you are built light you will get more than 3.5 inches of lift and need a driveshaft much sooner.
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Old 06-11-2019, 12:34 PM   #6
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Quote:
Originally Posted by DesertRubi View Post
You can probably run your stock shaft for a while (with exhaust spacers to avoid melting/tearing the boot on the cross pipe, though even with an aftermarket shaft you may still want spacers because the MC shocks have such long travel, I'm running into this), but consensus seems to be that the stock shaft will wear out sooner or later from running at the higher angle. Hard to tell how long you'll get, maybe 6 months, maybe 3 years, of course depends on how much and how hard you drive it.

As for 2.5 vs 3.5, at 3.5 you probably need to start looking at more supporting mods like steering upgrades, as far as I understand (hi steer kit, drag link flip). 2.5 is plenty for 35s unless you're looking for a ton of clearance with stock fenders, then 3.5 would be better. But 2.5 and flats will get about the same. I tossed around the decision and went 2.5 because I wasn't necessarily trying to build for huge capability and don't plan on running 37s anytime soon, so 2.5 gets the job done while keeping CG a bit lower. And in the end you can always change springs since the rest of the kit is the same, though if you really are having a hard time maybe just go 3.5 and be done, as I imagine more people wish they went bigger than the other way around.
X2.
It's not just the DS with a 2.5 to 3.5. Overall you'll wind up spending more $$$ than just the difference between the 2.5 to 3.5" kit price and the DS. 3.5 can start to cause geometry issues; the 2.5 is a safe bet.
If you're really only going to wheel occasionally and its 95% a DD IMO a 2.5" lift makes a lot of sense. If I were to build a DD (and not a crawler) I'd 100% stick to a 2.5. The trouble starts when you get the itch to wheel more and that extra flex makes a difference.
Keep in mind your DS is easy to monitor. You don't have to run out and do it right away. Just keep an eye on it - check the boot for grease throwing or tears. Make sure to check it before wheeling and after for certain. But there is no definitive answer to "will it go out and when."
Don't forget to factor in your gear ratio on 35s.

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