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9.25 vs 8.75 #1609801 04/20/14 03:24 AM 04/20/14 03:24 AM
Joined: Aug 2006 Posts: 8,064 Iowa 76dodgeboy OP master
76dodgeboy OP master Joined: Aug 2006 Posts: 8,064 Iowa	So what would you rather have under your ride? There's a guy looking for some 8.75 gears on the web and some kid is telling him to use the "Mini Dana" 9.25 claiming its stronger. From that I've heard the 9.25 is kind of a turd when abused too much. The guy wanting a center section has a twin turbo setup currently running 13s but he said he's upgrading turbos to run 10s. The kid that says the 9.25 is a mini Dana said a guy buy him blew his 8.75 a few times than installed a 9.25 with no issues and was in a 600hp D100. So who's been in momies meds ?

Re: 9.25 vs 8.75 [Re: 76dodgeboy] #1609802 04/20/14 03:46 AM 04/20/14 03:46 AM
Joined: Sep 2004 Posts: 6,906 IL, Aurora A ademon master
ademon master A Joined: Sep 2004 Posts: 6,906 IL, Aurora	If that's the one that is in my 03 Dakota, no thanks I'll take the 8 3/4

Re: 9.25 vs 8.75 [Re: ademon] #1609803 04/20/14 03:58 AM 04/20/14 03:58 AM
Joined: Aug 2006 Posts: 8,064 Iowa 76dodgeboy OP master
76dodgeboy OP master Joined: Aug 2006 Posts: 8,064 Iowa	12 bolt cover shaped like a stop sign

Re: 9.25 vs 8.75 [Re: ademon] #1609804 04/20/14 07:32 AM 04/20/14 07:32 AM
Joined: Jun 2008 Posts: 10,847 Oakdale CT gdonovan I Live Here
gdonovan I Live Here Joined: Jun 2008 Posts: 10,847 Oakdale CT	Quote: If that's the one that is in my 03 Dakota, no thanks I'll take the 8 3/4 Most Dakota's are 8.25" some were built with 9.25" 9.25" is a good unit, I have had no problems with an 8.75" even beating on one with a 440 stick for years. Usually the factory suregrips are the issue with the 8.25 and 8.25, junky designs. "I think its got a hemi"

Re: 9.25 vs 8.75 [Re: 76dodgeboy] #1609805 04/20/14 10:04 AM 04/20/14 10:04 AM
Joined: Nov 2008 Posts: 5,961 Greenville, PA redraptor master
redraptor master Joined: Nov 2008 Posts: 5,961 Greenville, PA	I consider them nearly equal stock. There is more aftermarket stuff for the 8 3/4. If you're running 10's it will be ALL aftermarket internals.

Re: 9.25 vs 8.75 [Re: redraptor] #1609806 04/20/14 10:14 AM 04/20/14 10:14 AM
Joined: Aug 2007 Posts: 1,511 AZ Mike P pro stock
Mike P pro stock Joined: Aug 2007 Posts: 1,511 AZ	I've run several of both in various projects (currenly have a 9 1/4 in the 57 Plymouth with a 1st Gen Hemi and 4 speed). I personally like the drop out center section of the 8 3/4 but I can find the 9 1/4s for about 1/2 the price of the 8 3/4s. As far as strength and reliability my experience is that is about a wash. 1957 Plymouth (Hemi, Dual Quads, A833 4 Speed 9 1/4 w 4.10) Sold 1937 Dodge Pickup (Hemi, 6X2 intake, 46RH, Dana 60 w 4.56) Sold 1968 Plymouth Valiant 2dr sedan (354 HEMI, 46RH w/4.30 gears)

Re: 9.25 vs 8.75 [Re: 76dodgeboy] #1609807 04/20/14 10:29 AM 04/20/14 10:29 AM
Joined: Jan 2003 Posts: 5,894 Florida Locomotion master
Locomotion master Joined: Jan 2003 Posts: 5,894 Florida	Doesn't the 9 1/4" have C-clip axle retainers? I don't know what's available, like 10 & 12 bolt GM rears have, but I figure it's not worth the trouble. 8 3/4" would be safer, along with the previously mentioned parts availability and drop-out convenience. Could do a rear Dana 60 right and just about forget about having any issues!

Re: 9.25 vs 8.75 [Re: Mike P] #1609808 04/20/14 10:32 AM 04/20/14 10:32 AM
Joined: Mar 2007 Posts: 9,336 South-Central (Sebring), FL Commando1 master
Commando1 master Joined: Mar 2007 Posts: 9,336 South-Central (Sebring), FL	Quote: The guy wanting a center section has a twin turbo setup currently running 13s but he said he's upgrading turbos to run 10s. Actually, shame on this guy. IF he can afford a car like that and run those numbers, he SHOULD have already known the answer and the discussion closed.

Re: 9.25 vs 8.75 [Re: Commando1] #1609809 04/20/14 01:26 PM 04/20/14 01:26 PM
Joined: Oct 2003 Posts: 21,345 Marysville, O-H-I-O 70Cuda383 Too Many Posts
70Cuda383 Too Many Posts Joined: Oct 2003 Posts: 21,345 Marysville, O-H-I-O	Lots of 4,000 lb Dakotas with stock 9.25s in them running 11s. And even a handful into the 10s Seems strong enough to me. Photobucket sucks

Re: 9.25 vs 8.75 [Re: Commando1] #1609810 04/20/14 01:51 PM 04/20/14 01:51 PM
Joined: Aug 2006 Posts: 8,064 Iowa 76dodgeboy OP master
76dodgeboy OP master Joined: Aug 2006 Posts: 8,064 Iowa	Quote: Quote: The guy wanting a center section has a twin turbo setup currently running 13s but he said he's upgrading turbos to run 10s. Actually, shame on this guy. IF he can afford a car like that and run those numbers, he SHOULD have already known the answer and the discussion closed. He's wanting 8.75 stuff Not 9.25. the kid is the one saying through 9.25 is better. I mentioned converting a truck D60 over to 5lug and told him to contact DoctorDiff

Re: 9.25 vs 8.75 [Re: 76dodgeboy] #1609811 04/27/14 01:41 PM 04/27/14 01:41 PM
Joined: Mar 2005 Posts: 792 Earth R Rob C super stock
Rob C super stock R Joined: Mar 2005 Posts: 792 Earth	It is a C-clip rear, If you all ready have the 9-1/4, then it is worth an upgrade to better axles. But I would not purchase one to go fast. I don't know if there are any C-clip eliminator kits for that rear.

Re: 9.25 vs 8.75 [Re: 76dodgeboy] #1609812 04/27/14 01:59 PM 04/27/14 01:59 PM
Joined: Oct 2005 Posts: 4,945 WI Dcuda69 master
Dcuda69 master Joined: Oct 2005 Posts: 4,945 WI	Quote: The guy wanting a center section has a twin turbo setup currently running 13s Ummm....am I the only one here that thinks he has more issues than just the rear end???

Re: 9.25 vs 8.75 [Re: Dcuda69] #1609813 04/27/14 02:23 PM 04/27/14 02:23 PM
Joined: Nov 2007 Posts: 21,822 Kirkland, Washington Pacnorthcuda Too Many Posts
Pacnorthcuda Too Many Posts Joined: Nov 2007 Posts: 21,822 Kirkland, Washington	Quote: Quote: The guy wanting a center section has a twin turbo setup currently running 13s Ummm....am I the only one here that thinks he has more issues than just the rear end??? Maybe it's a twin turbo slant 6 in a C body?

Re: 9.25 vs 8.75 [Re: Pacnorthcuda] #1609814 04/27/14 03:50 PM 04/27/14 03:50 PM
Joined: Sep 2011 Posts: 2,042 colorado S savoy64 top fuel
savoy64 top fuel S Joined: Sep 2011 Posts: 2,042 colorado	the 9.25 was made to be as strong as the dana 60---putting a c-clip on it was the major mistake---if you want to race one you can do a c-clip elimination with either 8.75 axle ends or a 9" axle end--then have axle shafts made to fit...

Re: 9.25 vs 8.75 [Re: 70Cuda383] #1609815 04/27/14 05:17 PM 04/27/14 05:17 PM
Joined: Feb 2010 Posts: 18,493 Granite Bay CA Kern Dog Striving for excellence
Kern Dog Striving for excellence Joined: Feb 2010 Posts: 18,493 Granite Bay CA	Quote: Lots of 4,000 lb Dakotas with stock 9.25s in them running 11s. And even a handful into the 10s Seems strong enough to me. The issue with C clip rearends was made famous by GENERIC Motors. The Mopar 8 1/4" and 9 1/4" axles do not have the same type of failures.

Re: 9.25 vs 8.75 [Re: Kern Dog] #1609816 04/27/14 05:20 PM 04/27/14 05:20 PM
Joined: Sep 2011 Posts: 2,042 colorado S savoy64 top fuel
savoy64 top fuel S Joined: Sep 2011 Posts: 2,042 colorado	must be on some outlaw tracks....

Re: 9.25 vs 8.75 [Re: Kern Dog] #1609817 04/27/14 05:35 PM 04/27/14 05:35 PM
Joined: Oct 2005 Posts: 8,871 Ontario, Canada S Stanton Don't question me!
Stanton Don't question me! S Joined: Oct 2005 Posts: 8,871 Ontario, Canada	Quote: The issue with C clip rearends was made famous by GENERIC Motors. The Mopar 8 1/4" and 9 1/4" axles do not have the same type of failures. The only downside to the 9-1/4 is the cost of aftermarket parts - but then if you drive a Mopar you're already used to that! FWIW, the 9-1/4 is a true "Mopar" item - unlike the dana. The strength comes from the ring gear size so the 9-1/4 should be stronger than anything but a dana - given the same quality of gear in each. It is apparently easier to work on than a dana. If you were going to buy a rear end and then shorten it, swap gears and diff, etc, etc, then there's no excuse not to go with a 9-1/4 versus an 8-3/4.

Re: 9.25 vs 8.75 [Re: Stanton] #1609818 04/27/14 05:45 PM 04/27/14 05:45 PM
Joined: Feb 2010 Posts: 18,493 Granite Bay CA Kern Dog Striving for excellence
Kern Dog Striving for excellence Joined: Feb 2010 Posts: 18,493 Granite Bay CA	For an axle that one intends to keep a specific set of gears in, the 9.25 is great. The appeal of easy gear swaps without consulting a gear shop is a major factor in choosing the 8 3/4" axle.

Re: 9.25 vs 8.75 [Re: Kern Dog] #1609819 04/27/14 07:02 PM 04/27/14 07:02 PM
Joined: Oct 2005 Posts: 6,048 Back home in PA B BulletBob master
BulletBob master B Joined: Oct 2005 Posts: 6,048 Back home in PA	The issue with C clip rearends was made famous by GENERIC Motors. The Mopar 8 1/4" and 9 1/4" axles do not have the same type of failures. Chrysler must have put some invisible safety strap that holds a broken axle in in the 8.25 & 9.25 & mine failed when I broke it mud riding an 80' model I had once That tire/wheel,axle stub & brake drum came out of there just a fast as my old 66 GTO axle did when introduced to slicks & 550 ft lbs of torque & a 4800 rpm clutch dump I don't see the difference

Re: 9.25 vs 8.75 [Re: BulletBob] #1609820 04/27/14 10:23 PM 04/27/14 10:23 PM
Joined: Oct 2005 Posts: 8,871 Ontario, Canada S Stanton Don't question me!
Stanton Don't question me! S Joined: Oct 2005 Posts: 8,871 Ontario, Canada	Quote: mine failed when I broke it mud riding an 80' model I had once That tire/wheel,axle stub & brake drum came out of there just a fast as my old 66 GTO axle did when introduced to slicks & 550 ft lbs of torque & a 4800 rpm clutch dump I don't see the difference You could take an axle out of a Kenworth big rig and stuff it under your car and in the right circumstances break it! That doesn't mean its a weak rear end !!! My feeling is that a 9-1/4 would not break under the same circumstances as that POS GM unit. However, the GM unit would not have lasted as long as the 9-1/4 in the mud. If you're going to compare things, do it on equal terms !!!

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