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Re: 8 3/4 axle twisted [Re: Cab_Burge] #1515511
03/19/14 06:49 PM
03/19/14 06:49 PM
Joined: Aug 2011
Posts: 51
San Diego, USA
SoCalRacer Offline
member
SoCalRacer  Offline
member

Joined: Aug 2011
Posts: 51
San Diego, USA
Late reply, as usual

Did the same thing to the 8-3/4 in my all steel '70 'Cuda with a 340; although a stick car. Put in a Dana 60 and never looked back. That was in 1985, and still running high tens today with no problems! I was bucks down back then and took a semi-floating truck housing, cut the ends off (since I was narrowing anyway) and welded on the ones from the twisted 8-3/4. I did build an alignment fixture to get the ends centered correctly. Running a spool and 35 spline axles... pretty close to bulletproof.


If it ain't broke ... you're not pushing it hard enough.
Re: 8 3/4 axle twisted [Re: SoCalRacer] #1515512
03/19/14 07:08 PM
03/19/14 07:08 PM
Joined: Jan 2003
Posts: 16,376
D
dogdays Offline
I Live Here
dogdays  Offline
I Live Here
D

Joined: Jan 2003
Posts: 16,376
Gun-drilled axles save weight with nearly no decrease in strength, either torsional or in bending. The inner material is just along for the ride, it is so close to the neutral axis that it doesn't do anything when the axle is stressed. Strength goes up as the third power of the diameter, IIRC.

R.

Re: 8 3/4 axle twisted [Re: Wedgeman] #1515513
03/19/14 07:13 PM
03/19/14 07:13 PM
Joined: Mar 2006
Posts: 9,791
MI, usa
dvw Offline
master
dvw  Offline
master

Joined: Mar 2006
Posts: 9,791
MI, usa
Quote:

Will I be able to retain my 35 splines axles from my 8 3/4 ?



You will be able to use the old axles. But you will have to narrow the new housing about 1" narrower. The Dana pinion is offset. A Dana has one axle longer than the other. The shaft splines are long enough to slide the axle through the spool, no need to cut it off. So when you set it up, make the housing cut so the long axle side uses your existing axle length. The Pinion offset will result in the other side being shorter. Thus the shorter housing.
Doug

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