fj40 axle vs GM 3/4 10 bolt (1 Viewer)

[Fast Eddy]

I was thinking about a dana 60 or Ford 9" or something when I said 35 spline.

Really think he needs chromo shafts? I think he'd be fine with stock 14b shafts unless he supercharged that LQ9. It only puts out 380lb/ft stock..

380 ft lbs x 2 for the 203 x 2 for the t-case gears x 4 for the diff gears = 6000 ft lbs.

Autos are pretty easy on axles. less shock loading.

So true.

I would much rather use my fj60 rear and do a ff kit with the fj80 e-locker that I already have. to many decisions.

I can't imagine it will be cheaper once you add up brake parts. As long as you have a plasma cutter to cut off all the brackets, the fj80 full floater has a lot of benefits, like stock Toyota disc brakes and e-brakes.

There aren't that many circumstances where you can't get a broken piece out of the diff. If you're really paranoid about it you could build the housing with a diff cover.

 

[GLTHFJ60]

I understand how to multiply eddy, thank you. That's still not a ton of power in the grand scheme of things and certainly not too much for a 14bolt.

You can get 35 spline axle shafts for a 14bolt but that's usually for people who run blown motors and bounce their rigs on the rocks, like Tim Cameron.

 

[Mace]

A 40 spline 14 bolt arb was made. But conventional 35 spine shafts are the same diameter as the 14 bolt 30 spline shafts.

I have done full throttle assaults with my 40 bouncing up backdoor at the hammers. On 39" irocks the 14 bolt never blinked. There is no reason to upgrade the shafts for 35s.

I agree with gumby that there is not a strength difference between a 30 spline 60 ff and a 30 spline 80 ff.

Getting a broken stub out with a diff cover is not always possible. But some welding rod talked to the broken piece commonly works. That's not a big concern..

 

[Gumby]

The 80 might be stronger in that its fully gusseted.

It would also require a bit more work to strip all the mounts off.

 

[GLTHFJ60]

The 80 might be stronger in that its fully gusseted.

It would also require a bit more work to strip all the mounts off.

From a housing perspective, I definitely agree. The housing is stronger, the internals aren't.

 

[Tapage]

From a housing perspective, I definitely agree. The housing is stronger, the internals aren't.

Agree but still don't see the point .. if you can weld you can make your housing as strong as you want ..

the rear Disc setup also not a selling point while e-brake system on the 80 series rear its a mayor benefit if you are concern about ( and you should ) e-brake