27 or 29 spline?

cdhowell · Jan 25, 2007

Getting a free 8.25 27 spl. axle. I have a 29 spl. now. There are no quick lock option for the 29. Is it worth the swap or spend the extra coin on a detroit? I dont hammer my rig, and I run 33's, and 4:56's.

MoparManiac · Jan 25, 2007

well I've only read that the 27-spline shafts are the same size shafts used in the D35 and the 29 spline are comparable to a d44 maybe a tad smaller (?). I'd vote to spend the extra coin on the detroit if you wanna do it right and not worry about it.

djblade311 · Jan 25, 2007

cdhowell said:
Getting a free 8.25 27 spl. axle. I have a 29 spl. now. There are no quick lock option for the 29. Is it worth the swap or spend the extra coin on a detroit? I dont hammer my rig, and I run 33's, and 4:56's.

quick lock? what do you mean? Stick with the 29 Spline. unless you intend to build up the 27 spl to a 29 spl. Detroit made a full locker, Detroit EZ locker (lunchbox locker) and power trax no-slips are available.

Tom R. · Jan 26, 2007

MoparManiac said:
well I've only read that the 27-spline shafts are the same size shafts used in the D35 and the 29 spline are comparable to a d44 maybe a tad smaller (?). I'd vote to spend the extra coin on the detroit if you wanna do it right and not worry about it.

The 29-spline shaft is much closer in size to the D35 shaft than it is to the D44. It's really not that much larger than the 27-spline shaft.

Frank Z · Jan 26, 2007

Huh? The 8.25" shafts are .1" smaller than the d44 shafts and have 1 less spline.

Tom R. · Jan 27, 2007

Frank Z said:
Huh? The 8.25" shafts are .1" smaller than the d44 shafts and have 1 less spline.

...and it's only .03" larger than the D35.

Shaft diameter
1.17 - 8.25 27-spline
1.18 - D35
1.21 - 8.25 29-spline
1.31 - D44

It's obvious the 8.25 29-spline is closer in size to the D35 than it is to the D44. Clear now?

goXJ · Feb 2, 2007

thanks tom. i was looking for those specs earlier.

cassio · Feb 2, 2007

but isnt spline count a big deal...

Frank Z · Feb 2, 2007

Yes, more surface area for load transfer.

27 or 29 spline?

cdhowell

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djblade311

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Tom R.

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Frank Z

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