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dana 60 dun drilled axles #922426 02/06/11 05:22 PM 02/06/11 05:22 PM
Joined: Sep 2009 Posts: 215 mo A ALKYW5DART OP enthusiast
ALKYW5DART OP enthusiast A Joined: Sep 2009 Posts: 215 mo	switching from 8.75 to dana 60. are gun drilled axles & lightened spool worth the extra money also what hp rating is the dana 60 with 35 spline axles

Re: dana 60 dun drilled axles [Re: ALKYW5DART] #922427 02/07/11 08:46 PM 02/07/11 08:46 PM
Joined: Mar 2005 Posts: 2,172 Ohio T theclutcher top fuel
theclutcher top fuel T Joined: Mar 2005 Posts: 2,172 Ohio	in the big scheme of things, your have to answer that yourself. many will spend a ton of $$$$$ and install titanium main caps on a race block to save a couple of lbs. If you have more cash than you need, go for it. going with all the lite wght components, you can get the dana close to wght of 8n3/4. Performance increase sure, liter the better. As far as strength questions, go to Markwilliams.com and brouse all their info on axles, you will find the answers you seek.

Re: dana 60 dun drilled axles [Re: ALKYW5DART] #922428 02/07/11 09:13 PM 02/07/11 09:13 PM
Joined: Dec 2003 Posts: 22,731 Bitopia J jcc If you can't dazzle em with diamonds..
jcc If you can't dazzle em with diamonds.. J Joined: Dec 2003 Posts: 22,731 Bitopia	Quote: worth the extra money Like asking what kinda mileage does it get, or is a push bra worth the extra money, if you got to ask, probably not. Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.

Re: dana 60 dun drilled axles [Re: ALKYW5DART] #922429 02/07/11 09:18 PM 02/07/11 09:18 PM
Joined: Oct 2007 Posts: 4,213 New York polyspheric master
polyspheric master Joined: Oct 2007 Posts: 4,213 New York	Regardless of "horsepower ratings", power doesn't brake a diff. A 6,000 lb. hearse with a 100 lb. flywheel @ 9K RPM and 12" tires will break everything. An 1,800 lb. roadster with a low stall Powerglide and 7" tires won't break anything. The spool is worth something - it's both rotating and unsprung. Cost effective? Who knows, but it's all good. A drilled axle removes almost no weight - it's like puking before you get in the car. Boffin Emeritus

Re: dana 60 dun drilled axles [Re: polyspheric] #922430 02/08/11 10:27 AM 02/08/11 10:27 AM
Joined: Jun 2009 Posts: 877 ky 68roadrunner super stock
68roadrunner super stock Joined: Jun 2009 Posts: 877 ky	does gun drilling the axle make it stronger??

Re: dana 60 dun drilled axles [Re: 68roadrunner] #922431 02/08/11 10:54 AM 02/08/11 10:54 AM
Joined: Oct 2004 Posts: 8,165 Left Coast B BobR master
BobR master B Joined: Oct 2004 Posts: 8,165 Left Coast	I doubt 35 spline axles are drilled.

Re: dana 60 dun drilled axles [Re: 68roadrunner] #922432 02/08/11 02:26 PM 02/08/11 02:26 PM
Joined: Oct 2007 Posts: 4,213 New York polyspheric master
polyspheric master Joined: Oct 2007 Posts: 4,213 New York	Weaker, but the diff is so small it's not important. Far more important is whether the hole is absolutely clean, concentric, mirror finish inside - DTTAH. Boffin Emeritus

Re: dana 60 dun drilled axles [Re: BobR] #922433 02/08/11 03:06 PM 02/08/11 03:06 PM
Joined: Jul 2005 Posts: 1,162 s e mich ro23car super stock
ro23car super stock Joined: Jul 2005 Posts: 1,162 s e mich	Quote: I doubt 35 spline axles are drilled. mine are.

Re: dana 60 dun drilled axles [Re: ro23car] #922434 02/08/11 03:25 PM 02/08/11 03:25 PM
Joined: Oct 2004 Posts: 8,165 Left Coast B BobR master
BobR master B Joined: Oct 2004 Posts: 8,165 Left Coast	Quote: Quote: I doubt 35 spline axles are drilled. mine are. Ours are 40 spline. I'd be a little leary of drilling 35 unless the car is light.

Re: dana 60 dun drilled axles [Re: BobR] #922435 02/08/11 03:51 PM 02/08/11 03:51 PM
Joined: Jul 2005 Posts: 1,162 s e mich ro23car super stock
ro23car super stock Joined: Jul 2005 Posts: 1,162 s e mich	Quote: Quote: Quote: I doubt 35 spline axles are drilled. mine are. Ours are 40 spline. I'd be a little leary of drilling 35 unless the car is light. #3400 but im fine with what i chose.

Re: dana 60 dun drilled axles [Re: polyspheric] #922436 02/08/11 04:43 PM 02/08/11 04:43 PM
Joined: Mar 2005 Posts: 2,172 Ohio T theclutcher top fuel
theclutcher top fuel T Joined: Mar 2005 Posts: 2,172 Ohio	Quote: Weaker, but the diff is so small it's not important. Far more important is whether the hole is absolutely clean, concentric, mirror finish inside - DTTAH. I dont know about that. something called "moment of inertia" where a tube is stronger than a solid due to surface area. Cant recall and hopefully someone will correct and clarify my recollections.

Re: dana 60 dun drilled axles [Re: theclutcher] #922437 02/08/11 07:40 PM 02/08/11 07:40 PM
Joined: Jun 2007 Posts: 2,646 Plymouth Meeting, PA bigtimeauto Trophy Winner
bigtimeauto Trophy Winner Joined: Jun 2007 Posts: 2,646 Plymouth Meeting, PA	A 40 spline gun drilled axle is ighter and stronger than 35spline solid one. So i use the 40's gundrilled. BB, TT5,Procharged 3300lb Street Car 4.79/154

Re: dana 60 dun drilled axles [Re: theclutcher] #922438 02/08/11 08:21 PM 02/08/11 08:21 PM
Joined: Oct 2007 Posts: 4,213 New York polyspheric master
polyspheric master Joined: Oct 2007 Posts: 4,213 New York	Using the same amount of material, a large tube is stronger than a smaller solid rod. Stiffness of a solid cylinder varies as the 4th power of the diameter (weight only as the square). Drilling a hole doesn't make it stronger. Boffin Emeritus

Re: dana 60 dun drilled axles [Re: ALKYW5DART] #922439 02/08/11 08:50 PM 02/08/11 08:50 PM
Joined: Jan 2003 Posts: 5,895 Florida Locomotion master
Locomotion master Joined: Jan 2003 Posts: 5,895 Florida	Quote: switching from 8.75 to dana 60. are gun drilled axles & lightened spool worth the extra money also what hp rating is the dana 60 with 35 spline axles * Aftermarket 35 spline axles in an 8 3/4" and Dana 60 are basically the same thing. * The weight of a Dana 60 is mostly offset by the fact that a Dana 60 is more efficient. * Less weight, especially rotating, will help, but the return for the money is debatable. You can also lighten the ring gear. * Weak link in an 8 3/4" is the gears themselves and caps. Weak link in the Dana 60 would be the axles. I did break a Strange Dana 60 axle (35 spline) in a low-mid 10 second 360 W-2, auto, footbrake Challenger weighing 2,850 lbs. But that's after thousands of runs over at least 8 years. * Get a billet rear end yoke with u-bolts and use Spicer (my preference) solid u-joints. Last edited by Locomotion; 02/08/11 08:52 PM.

Re: dana 60 dun drilled axles [Re: polyspheric] #922440 02/08/11 10:30 PM 02/08/11 10:30 PM
Joined: Dec 2003 Posts: 22,731 Bitopia J jcc If you can't dazzle em with diamonds..
jcc If you can't dazzle em with diamonds.. J Joined: Dec 2003 Posts: 22,731 Bitopia	Quote: Drilling a hole doesn't make it stronger. I swear I haven't been drinking, but that just sounds funny Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.

Re: dana 60 dun drilled axles [Re: polyspheric] #922441 02/09/11 02:02 PM 02/09/11 02:02 PM
Joined: Mar 2005 Posts: 2,172 Ohio T theclutcher top fuel
theclutcher top fuel T Joined: Mar 2005 Posts: 2,172 Ohio	Quote: Using the same amount of material, a large tube is stronger than a smaller solid rod. Stiffness of a solid cylinder varies as the 4th power of the diameter (weight only as the square). Drilling a hole doesn't make it stronger. Thats what I was after. Thanks for setting me straight with info.

Re: dana 60 dun drilled axles [Re: theclutcher] #922442 02/09/11 05:29 PM 02/09/11 05:29 PM
Joined: Nov 2004 Posts: 6,890 North Alabama M Monte_Smith master
Monte_Smith master M Joined: Nov 2004 Posts: 6,890 North Alabama	I think the point some are trying to make here, is that a 40spline gun drilled axle is much stronger than a 35 spline axle, plus, it is lighter. So, if you are starting at ground zero, why not buy the stronger, lighter stuff, to start with. I would personally be wary of a gun drilled 35 spline in any car in the 3000lb range. Monte

Re: dana 60 dun drilled axles [Re: Monte_Smith] #922443 02/09/11 07:31 PM 02/09/11 07:31 PM
Joined: Jul 2006 Posts: 4,595 On the south side of Nowhere S S/ST 3040 master
S/ST 3040 master S Joined: Jul 2006 Posts: 4,595 On the south side of Nowhere	6466702-DSCN1754.JPG (78 downloads)

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