Front diff upgrade time.

[Coastal616]

Finally found the diff I've been looking for cheap on craigslist. $100 for a 2007-up Tundra front 9" IFS diff. (its really around 8.7" but whatever)

I had my friends at Big Country Customs narrow it, and over the next couple weeks it will be getting fit into my donor 4runner chassis, along with my camburg kit, coilovers, a V8, and probably a new rear link suspension. Once the chassis is ready to rock, I'm going to move my body over to it.

Daryl made the new section out of steel for ease of welding mounts to once it's in the chassis, and not to mention welding the cast aluminum could have strength issues. I will either make the stock 36 spline tundra shafts work, or just go RCV and not worry about it. I want a bomb proof front end that will see maximum 35" tires. :reddance:

The narrowed diff:

 

[Coastal616]

Oh ya, its even the right gear ratio for an auto 4runner.

 

[JamesDean91]

That's pretty sweet.
But does not seem economical for most.
What kind of lockers are available for that diff?

 

[Coastal616]

That's pretty sweet.
But does not seem economical for most.
What kind of lockers are available for that diff?

ARB is available for it. Don't really need any other options lol

 

[Swede]

I was wondering when someone would tackle this project. Good for you! Subscribed!

 

[Coastal616]

I was wondering when someone would tackle this project. Good for you! Subscribed!

Thanks!

 

[Coastal616]

Anyone have any thoughts on the strength of the factory tacoma manual hubs? I'm trying to decide if I should go that route for simplicity, or go with a custom knuckle with F350 unit bearings and locking hubs.

 

[BillIam]

ohh man i like where this is going, should just build some +3" long travel a arms while your at it!

 

[revenantdead]

Anyone have any thoughts on the strength of the factory tacoma manual hubs? I'm trying to decide if I should go that route for simplicity, or go with a custom knuckle with F350 unit bearings and locking hubs.

i say if you have the budget, go big or go home. it's up to you really. i work with 350's on a nearly daily basis. those units are BEEF. more than capable of handling 37"s with ease. it would be a real one off if you get them in there.

 

[Singtoe]

Anyone have any thoughts on the strength of the factory tacoma manual hubs? I'm trying to decide if I should go that route for simplicity, or go with a custom knuckle with F350 unit bearings and locking hubs.

From Personal experience: Side by side. The Tacoma manual CV Joint is smaller (balls,cage, and shaft) then the ADD CV joint .

With that said, The only time I broke a CV half shaft was with the inner tripod.

I would love to see a unit bearing build. Only problem is that the wheel bolt patterns won't be the same as the rear.

 

[Coastal616]

ohh man i like where this is going, should just build some +3" long travel a arms while your at it!

already got that! lol

i say if you have the budget, go big or go home. it's up to you really. i work with 350's on a nearly daily basis. those units are BEEF. more than capable of handling 37"s with ease. it would be a real one off if you get them in there.

I think I am leaning that way....I would like to be almost bomb proof with 35's.

From Personal experience: Side by side. The Tacoma manual CV Joint is smaller (balls,cage, and shaft) then the ADD CV joint .

With that said, The only time I broke a CV half shaft was with the inner tripod.

I would love to see a unit bearing build. Only problem is that the wheel bolt patterns won't be the same as the rear.

Ok that's good to know, I thought the ADD shafts and spline length looked pretty decent for a stock setup, but if the manual stuff is smaller....i'm out.

Good news on unit bearings, they are available from Trail Gear, SpiderTrax and timken in 6x5.5" bolt pattern.

And trail gear makes these nice pieces to build off of:

Trail Gear:

Spidertrax:

 

[BillIam]

ohh man your giving me a woody hahah. i thought camburg sold their own heavy duty 4wd knuckles tho?

 

[BillIam]

?95.5-?04 4WD TACOMA » my bad it was solo motorsports who had the spindles for sale, ive drooled over this setup before hahah

 

[Coastal616]

I have looked at those, they are wicked, but they still have the smallish toyota stub axles....need more beef!

 

[Coastal616]

Finally had some time to go pickup the diff from BCC. Got it set on top of the factory diff to compare sizes and it looks like it should go in really easily. Just need to fab up some new mounts and it will look like it was meant to be there.

 

[Forrrrest]

Finally had some time to go pickup the diff from BCC. Got it set on top of the factory diff to compare sizes and it looks like it should go in really easily. Just need to fab up some new mounts and it will look like it was meant to be there.

So what ever came of this??

 

[xcmtb83]

so what ever came of this??

x2!!!!!

 

[541joseph]

x2!!!!!

x3....

 

[revenantdead]

x4!!!

 

[Coastal616]

Hahah, still sitting there...had another kid so time and motivation are low!

I'm trying to figure out he cheapest/most efficient way to do the spindles and shafts too. I'd love to run the stock tundra shafts, and just get my 4runner hubs resplined to fit. Or get new billet hubs made up in the correct spline. That would make this swap a real piece of cake.