Official 14 Bolt 9.5 SF Truck Thread
07-20-2015, 06:50 PM
#22
Can you get the AXN 9.5" 14 bolt in newer trucks? I thought it was a 05-07 thing.
Well, after years of searching I finally found a 9.5" 14 bolt rear axle. I had to pay for it on my local wrecking yard's website so I won't know if it's %100 correct until I actually see it firsthand. They had to ship it in from out of state.
I do wonder though, why is it so much stronger? I understand why the full floater 10.5" 14 bolt would be stronger.(supported pinion, massive ring gear, full float, huge axles) Unfortunately it doesn't come in a 6 lug application and it weighs a ton.
The AXN hybrid axle is literally just that, a hybrid. 10 bolt outers, 9.5" 14 bolt center section. It uses the exact same axles as the 10 bolt? So all of the strength gain comes from the larger ring/pinion gear? I've read that the 8.6" 10 bolt input is rated for up to 1500 ft lbs and the 9.5" 14 bolt input is rated at 2100 ft lbs.
My stepfather has a Dana 60, 6 lug rear axle out of an old International. It's swapped into a 72 Blazer. It has a 489 big block and we can't stop breaking axle shafts. The big block makes around 650 ft lbs of torque.
People claim that the 9.5" axle is tough but I don't understand why it would be stronger than the Dana 60 in the Blazer. What am I missing?
Well, after years of searching I finally found a 9.5" 14 bolt rear axle. I had to pay for it on my local wrecking yard's website so I won't know if it's %100 correct until I actually see it firsthand. They had to ship it in from out of state.
I do wonder though, why is it so much stronger? I understand why the full floater 10.5" 14 bolt would be stronger.(supported pinion, massive ring gear, full float, huge axles) Unfortunately it doesn't come in a 6 lug application and it weighs a ton.
The AXN hybrid axle is literally just that, a hybrid. 10 bolt outers, 9.5" 14 bolt center section. It uses the exact same axles as the 10 bolt? So all of the strength gain comes from the larger ring/pinion gear? I've read that the 8.6" 10 bolt input is rated for up to 1500 ft lbs and the 9.5" 14 bolt input is rated at 2100 ft lbs.
My stepfather has a Dana 60, 6 lug rear axle out of an old International. It's swapped into a 72 Blazer. It has a 489 big block and we can't stop breaking axle shafts. The big block makes around 650 ft lbs of torque.
People claim that the 9.5" axle is tough but I don't understand why it would be stronger than the Dana 60 in the Blazer. What am I missing?
07-20-2015, 07:54 PM
#24
Do you think maybe 90's version has larger axles and the AXN version doesn't? I don't know. Whenever mine gets here I'll take it apart and measure so we know 100%.
I've researched so much I think I broke my brain. LOL I've read so many conflicting facts.
07-20-2015, 08:00 PM
#25
The center portion uses the 9.5 center housing but the outer use a 10 bolt bearing and seal at the axle flange along with the 1500 series brakes. The axles are also a bastard size with the 10 bolt outer bearing size but a 33 spline. The axle length is also unique to this application...
The 14 bolt 9.5 casting is also unique to this specific application.
The AXN was available from 2005-2007 classic GMT800 and also in the 2007-up GMT900 platform. Not sure what they are doing on the new GMT K2 series pickups...
I have heard it's a new Bastard 12 bolt or something along those lines.
07-20-2015, 08:16 PM
#26
Can you get the AXN 9.5" 14 bolt in newer trucks? I thought it was a 05-07 thing.
Well, after years of searching I finally found a 9.5" 14 bolt rear axle. I had to pay for it on my local wrecking yard's website so I won't know if it's %100 correct until I actually see it firsthand. They had to ship it in from out of state.
I do wonder though, why is it so much stronger? I understand why the full floater 10.5" 14 bolt would be stronger.(supported pinion, massive ring gear, full float, huge axles) Unfortunately it doesn't come in a 6 lug application and it weighs a ton.
The AXN hybrid axle is literally just that, a hybrid. 10 bolt outers, 9.5" 14 bolt center section. It uses the exact same axles as the 10 bolt? So all of the strength gain comes from the larger ring/pinion gear? I've read that the 8.6" 10 bolt input is rated for up to 1500 ft lbs and the 9.5" 14 bolt input is rated at 2100 ft lbs.
My stepfather has a Dana 60, 6 lug rear axle out of an old International. It's swapped into a 72 Blazer. It has a 489 big block and we can't stop breaking axle shafts. The big block makes around 650 ft lbs of torque.
People claim that the 9.5" axle is tough but I don't understand why it would be stronger than the Dana 60 in the Blazer. What am I missing?
Well, after years of searching I finally found a 9.5" 14 bolt rear axle. I had to pay for it on my local wrecking yard's website so I won't know if it's %100 correct until I actually see it firsthand. They had to ship it in from out of state.
I do wonder though, why is it so much stronger? I understand why the full floater 10.5" 14 bolt would be stronger.(supported pinion, massive ring gear, full float, huge axles) Unfortunately it doesn't come in a 6 lug application and it weighs a ton.
The AXN hybrid axle is literally just that, a hybrid. 10 bolt outers, 9.5" 14 bolt center section. It uses the exact same axles as the 10 bolt? So all of the strength gain comes from the larger ring/pinion gear? I've read that the 8.6" 10 bolt input is rated for up to 1500 ft lbs and the 9.5" 14 bolt input is rated at 2100 ft lbs.
My stepfather has a Dana 60, 6 lug rear axle out of an old International. It's swapped into a 72 Blazer. It has a 489 big block and we can't stop breaking axle shafts. The big block makes around 650 ft lbs of torque.
People claim that the 9.5" axle is tough but I don't understand why it would be stronger than the Dana 60 in the Blazer. What am I missing?
Are you completely sure about that? I thought that the AXN hybrid axle used the same bearings as the 10 bolt axle. I must be missing something.
Do you think maybe 90's version has larger axles and the AXN version doesn't? I don't know. Whenever mine gets here I'll take it apart and measure so we know 100%.
I've researched so much I think I broke my brain. LOL I've read so many conflicting facts.
Do you think maybe 90's version has larger axles and the AXN version doesn't? I don't know. Whenever mine gets here I'll take it apart and measure so we know 100%.
I've researched so much I think I broke my brain. LOL I've read so many conflicting facts.
The AXN is a Hybrid 14 bolt 9.5 rear end that started on the GMT800 trucks.
This differs from the earlier 88-98 GMT 400 Series rear end.
If you read my first two post is has all the measurements along with some pictures of each style.
Yes, the AXN has a different axle shaft that is specific to its application. It's smaller at the bearing journal diameter but uses a 33 spline like the original 14 bolt 9.5. It's also longer than the original.
I don't know much about Dana 60's so I can't answer that question. When you look at the Main bearing caps on the 10 bolt Vs. the 14 bolt you see a huge difference. Even the main cap bolts are larger.
The biggest thing that kills axles is wheel hop or dead hooking with a heavy vehicle.
08-10-2015, 05:22 PM
#27
Hmmm?
Okay, I've found someone who is parting out a 2001 2500HD Ext. cab 4x4 with a 14bolt w/disc brakes. Will this direct swap into my 99 RCSB 4x4? My current rear has disc's also.
08-15-2015, 08:03 AM
#30
TECH Fanatic
iTrader: (13)
Join Date: Feb 2006
Location: Kenosha WI
Posts: 1,102
Likes: 0
Received 0 Likes
on
0 Posts
Has anyone used a 14 bolt out of a Chevy express van? Will the factory disc brakes fit on this with the obvious modifications? I'm going with a custom set of bogarts anyways so wheel figment isn't an issue.
GM 14 BOLT REAR END WITH 3:73 GEARS AND 9.5'' RING GEARS. THIS WAS OUT OF A FULL SIZE CHEVY EXPRESS VAN 2000-2002.
OUTSIDE TO OUTSIDE OF SPRING PERCH IS ABOUT 53 1/2''
INSIDE TO INSIDE OF BACKING PLATE IS ABOUT 58 1/4''
George
GM 14 BOLT REAR END WITH 3:73 GEARS AND 9.5'' RING GEARS. THIS WAS OUT OF A FULL SIZE CHEVY EXPRESS VAN 2000-2002.
OUTSIDE TO OUTSIDE OF SPRING PERCH IS ABOUT 53 1/2''
INSIDE TO INSIDE OF BACKING PLATE IS ABOUT 58 1/4''
George