Will the guts of a 8.2" diff bolt straight into a 8.0" pumpkin?
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8.0 vs 8.2 (2 Viewers)
- Thread starter quadrifoglio
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Nope. The bolt pattern are not the same. Need all the bolt holes welded shut and re-drilled. Without having access to the equipment, it would cost a lot more than buying new housing.
A few buy new housing and buy 3rd member with locker. The axle shaft, bearings and backing plate are compatible.
A few buy new housing and buy 3rd member with locker. The axle shaft, bearings and backing plate are compatible.
I just snagged a new OEM 8.2 housing from Megazip for $852, shipped from Japan, and a core 8.2 3rd member for $285 on eBay. I'm planning on using everything else straight out of my 470, albeit with new wheel bearings. This "package" ended up about the same cost as a used complete 8.2 from a local salvage yard, but I get a brand new housing instead of a crusty old one.
FYI the 42110-60A91 housing has an OEM truss on the bottom of it. It appears to have come in Mexico, Australian, and GCC spec Prados and FJ Cruisers and never came in a USDM vehicle. Wondering if mine will be the first one to end up put in a USDM GX470...
FYI the 42110-60A91 housing has an OEM truss on the bottom of it. It appears to have come in Mexico, Australian, and GCC spec Prados and FJ Cruisers and never came in a USDM vehicle. Wondering if mine will be the first one to end up put in a USDM GX470...
There’s a post on FB GXOR whereby someone did this, but there were some mods required
Search fir Perry Parts
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By the way, I paid $5600 to have a gear shop locate and install a 2016 KDSS 4Runner 8.2” elocked rear diff
They re-geared me with new polished 4.56 revolution gears front and rear
Installed a new wiring harness with switch for the rear locker
Welded my old eimKeith PCK and added new rear sway bar brackets to keep my Nolathane HD rear sway bar
Kept my old GX470 brakes, hubs, wheel bearings, calipers, rotors
They re-geared me with new polished 4.56 revolution gears front and rear
Installed a new wiring harness with switch for the rear locker
Welded my old eimKeith PCK and added new rear sway bar brackets to keep my Nolathane HD rear sway bar
Kept my old GX470 brakes, hubs, wheel bearings, calipers, rotors
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They will fit, Ive seen this done. You just have to notch the 8" housing and tap a few extra holes for the 8" v2 to fit. Someone posted a write-up on here a few years back. It's basically the same overall housing.
It certainly seems possible, but with a brand new OEM 8.2 housing costing around $900 if you purchase it abroad (like I did), or around $1,100 from your local Toyota dealer, I'm not sure it is worth it unless you are on a shoestring budget.
FYI - complete GX460 8.2s seem to go for around $1,000-1,500, at least around here, or around $500-1K cheaper than a complete 4Runner 8.2. They are a 3.91 ratio so if you aren't planning to re-gear you'd also need the GX460 front differential, which seems to be as cheap as $250-300. So if you shopped around, and (if you have a non-KDSS rig, have some rear sway bar mounts built for the GX460 8.2), you might be able to get a complete 8.2 swap AND a 3.91 regear for around $1,300, AND then recoup some of that cost by selling your old 8" and 3.73 front clamshell as well.
I went the new housing route as it is basically the same cost as a used GX460 complete 8.2, but I get the truss and a brand new axle housing as opposed to something that's going to be 10+ years old and kind of crusty (living in the Midwest, after all).
- Thread starter
- #8
Good food for thought. Thanks!
Frankly, I wouldn't bother with an axle swap unless you plan on running 35s. There aren't actually that many cases of an 8" breaking unless the driver had huge tires or was driving like a moron. Get an Eaton locker and be done with it.
- Thread starter
- #10
Thanks, Mr. Bubbles.
Many people in GXOR Facebook page destroy their 8" rear diff even with light wheeling and 33" tire only. Mostly in slickrock like Moab. The high traction surface cause the carrier to flex and shift contact point to a much narrower part of the gear.
When I took my OEM 8" diff out at 160K, it have zero preload. I still run 8.0 elocker with heavy preload and 35, but I don't wheel on slickrock yet.
There have been enough 8" failures that I'm not personally willing to sink $2200 into a regear and Harrop, only to grenade the 8" rear diff and have to spend that money again for an 8.2 swap. I also want the flexibility to add 35s later. Buy once, cry once.
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