rear axle questions

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eran tomer

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As long as you get a Full float from a suburban shocks will hook up in the same place, the brake hose coming from frame to axle should be the same. Drums and shoes will probably be different but that won't matter the master cylinder is the same for both axles. U-joints I believe are the same. So in theory it should be remove old axle. Install new axle reverse of removal with new u-bolts. Bleed/adjust the brakes and enjoy the rig.
only from a suburban will fit? most of them will be from a silverado/sierra.

and the 9.5 axle- can take only from a suburban?
 
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RichLo

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ok, you have 8-bolt wheels, It'll much be easier to upgrade to a 10.5 FF then to convert an 8.5 over to 8-bolt.

Look for a single rear wheel (non-dually) 3500 1-ton rear axle. Shock mounts are all the same, the u-joint will be the same as yours, Spring perches should be the same, and 4.10 is much more common on those axles. Still double check but the majority of those axles will be 4.10.

GM Full float axles look like this
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sewlow

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To find out the ratio, rotate the pinion and count the rotations of the drums. just over 4 rotation of the pinion for 1 revolution of the brake drum is 4.10. Just under 3.5 rotations of the pinion to 1 is 3.42, etc.
I was taught to turn the wheel 10x, count the pinion rotations, then divide that total by 10. More accurate, especially when dealing with with common diffs that have near similar ratios.

suburban 8600GW. the axle is 14 bolt 9.5 with 4.10:1 ratio.
8600 GVW is basically a 3/4 ton with a 1 ton's running gear.
That's a 'TRUCK!' Built to carry/haul serious truck stuff.
Suspension-wise, everything about them is bigger.
Replacing that rear end you have now with a 10 bolt would be like using a plastic kiddie hammer on a job that requires a 10 lb. sledge.
10 bolt's have a problem just living under 1/2 ton's. Especially when equipped with a Gov-Lock.
Brakes are basic minimum standard. For a 1/2 ton. All that extra weight of the 8600 GVW suspension and those brakes will be begging for mercy.
I've had three 8600 GVW square bodies. They rode better with a load. Empty, the ride could be somewhat harsh.
Mileage? Empty = 10-11 MPG.'s. With an 8' camper? Towing a 21' speed boat? 9-10 MPG.'s.
The last one sent me to the chiropractor. Hit a bump the right way & threw my back out.
Sis wouldn't ride in any of them. Said they made her boobs hurt.

4.10's are a pretty standard ratio in the 14B.'s.

The reason Full Float is better than a Semi-Float.

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Semi-Float.

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Full Float.

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stutaeng

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it's the bolt of the carrier's pinion shaft that snapped off. not the drive pinion.
I'm stiff confused what bolt broke, but I just realized in my mind I'm thinking of a stock carrier. There's a bolt (yellow arrow) that holds the center pin (red arrow) that prevents the C-clips from getting pushed in. I've seen videos of that bolt breaking and it's difficult to remove. Once the C clips and axles are removed the only thing keeping the carrier are the caps.


I'm not sure how the ARB carrier works, and that's probably why I'm confused...:rolleyes:

As far as swapping a 14 bolt full float 10.5", there's nothing to modify (as long as it's from a GMT400.) It's all plug and play. Just get new u-bolts and go.
 

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eran tomer

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I'm stiff confused what bolt broke, but I just realized in my mind I'm thinking of a stock carrier. There's a bolt (yellow arrow) that holds the center pin (red arrow) that prevents the C-clips from getting pushed in. I've seen videos of that bolt breaking and it's difficult to remove. Once the C clips and axles are removed the only thing keeping the carrier are the caps.


I'm not sure how the ARB carrier works, and that's probably why I'm confused...:rolleyes:

As far as swapping a 14 bolt full float 10.5", there's nothing to modify (as long as it's from a GMT400.) It's all plug and play. Just get new u-bolts and go.
exactly the yellow arrow bolt broke, and most of the bolts fastening the 2 halves of the carrier.

why get new u-bolts?
 

stutaeng

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exactly the yellow arrow bolt broke, and most of the bolts fastening the 2 halves of the carrier.

why get new u-bolts?
U bolts are not supposed to be re-used. So you do have a source of the 14 bolt 10.5" in your area? I'm guessing traction is not a concern for you? The ARB is supposed to be one of the better lockers out there...better than a factory G80 locker...:rolleyes:
 

eran tomer

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U bolts are not supposed to be re-used. So you do have a source of the 14 bolt 10.5" in your area? I'm guessing traction is not a concern for you? The ARB is supposed to be one of the better lockers out there...better than a factory G80 locker...:rolleyes:
i'll search for either 10.5 or 9.5. i'd rather have a locker but my unit isn't repairable and a new one is too expensive...
 

eran tomer

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I was taught to turn the wheel 10x, count the pinion rotations, then divide that total by 10. More accurate, especially when dealing with with common diffs that have near similar ratios.


8600 GVW is basically a 3/4 ton with a 1 ton's running gear.
That's a 'TRUCK!' Built to carry/haul serious truck stuff.
Suspension-wise, everything about them is bigger.
Replacing that rear end you have now with a 10 bolt would be like using a plastic kiddie hammer on a job that requires a 10 lb. sledge.
10 bolt's have a problem just living under 1/2 ton's. Especially when equipped with a Gov-Lock.
Brakes are basic minimum standard. For a 1/2 ton. All that extra weight of the 8600 GVW suspension and those brakes will be begging for mercy.
I've had three 8600 GVW square bodies. They rode better with a load. Empty, the ride could be somewhat harsh.
Mileage? Empty = 10-11 MPG.'s. With an 8' camper? Towing a 21' speed boat? 9-10 MPG.'s.
The last one sent me to the chiropractor. Hit a bump the right way & threw my back out.
Sis wouldn't ride in any of them. Said they made her boobs hurt.

4.10's are a pretty standard ratio in the 14B.'s.

The reason Full Float is better than a Semi-Float.

You must be registered for see images attach


You must be registered for see images attach


Semi-Float.

You must be registered for see images attach


Full Float.

You must be registered for see images attach


You must be registered for see images attach
are the drums and shoes etc. interchangeable between 9.5 and 10.5?
 
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