Motiv8er

Can I simply replace my 27 splines with 29's? Or is there more to it than that?

Thanks in advance guys....

93XJLI

its easier to find a 29 spline axle and just swap the whole thing. you need the spiders, shafts, and i believe a seal or bearing somewhere. i looked into it years ago when i still had one and ended up building a 44 instead.

SeriousOffroad

No. new carrier and side gears as well.

Motiv8er

Thanks guys.. I was afraid of that... and just to be clear, the 27 is not nearly as good as the 29?... I am on a Rubicon Express 5.5 long arm, running 33's and planning on a rear auto-locker... is 27 good for light-to-medium off road work?

SeriousOffroad

It's only marginally better than a Dana35 due to the larger tubes.

93XJLI

i was pretty hard on my 27sp 8.25 with 33s locked. i would go ahead run it. the housing makes the axle a fair amount stronger than the D35 IMO and experience.

McCaffrey

If someone was going to do a locker and aftermarket shafts w/ 29 spline does it matter which housing they start with?

Rock Toy

It depends on what locker you plan on going with, a lunch box type locker will require you to replace the carrier, but if you plan on going with a full case locker it will make no difference which you start with a 27 spline or and 29 spline.

I planned on swapping gears to 4.88s and I like Detroit Lockers so I just upgraded my 27 spline axle with gears and 1541H 29 spline shafts and the Detroit.

McCaffrey

Thanks for the info.

Motiv8er

so one last question then guys... if I didn't want to do a major swap out on my 27 spline complete axle, what about just upgrading to heavy duty 27 spline shafts? (obviously like was said above, with all the appropriate parts).... hope this isn't redundant... still learning here....

SeriousOffroad

here ya go...

http://www.seriousoffroadproducts.co...H-RH-8.25-Inch

XJSnowPanda

so i got a good deal on a 27 spline 8.25 im going to replace the axles, regear, and lock it. if i buy all 29 spline stuff do i have to change anything else? just want extra clarification. thank you

SeriousOffroad

No, that's it.

OttawaXJ

You spelt "Considerably" wrong.

29 spline is almost the strength of a Dana 44.

SeriousOffroad

You need to read the post that was immedistely above the one you quoted.