One Ton rear Axle Options - 68 - 69" WMS - Pirate4x4.Com : 4x4 and Off-Road Forum
 
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Old 01-08-2011, 09:30 PM   #1 (permalink)
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One Ton rear Axle Options - 68 - 69" WMS

I'm searching for best options. Seems like widening my 60 isn't a good way to go.

I need to find a rear axle 68-69" wide that will hold up to 42's (or can be built for them).

Most 14 bolts seem narrower than this.

What are some axle that fall into this category?
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Old 01-09-2011, 06:38 AM   #2 (permalink)
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Originally Posted by 87YJ View Post
I'm searching for best options. Seems like widening my 60 isn't a good way to go.

I need to find a rear axle 68-69" wide that will hold up to 42's (or can be built for them).

Most 14 bolts seem narrower than this.

What are some axle that fall into this category?

If its a little narrower then just make up the width with the offset of the wheels?
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Old 01-09-2011, 09:36 AM   #3 (permalink)
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If you already have a 60 that is narrowed you can always get a new one and swap gears and such. Only thing you would need to replace is shafts or just run the stock ones from the new 60.

14b are right around 67. trucks have a narrower rear axle for a reason. helps it to track better on road
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Old 01-09-2011, 11:35 AM   #4 (permalink)
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I'd go with a 14 bolt. Like said above, it's 67" right out of the box and if you're trying to match a front axle that's 68-69" wide up front, you'll be better off with a slightly narrower rear axle. 0.5"-1" narrower rear sounds perfect to me, and you wont be able to notice the width differences - especially with 42" tires. Try to find one with a factory Detroit and you're golden.

The only downside to the 14 bolt compared to, say a built D60, is the gear ratio "limitations". If you have something crazy like 6.17's or deeper the 14 bolt wont be able to accommodate.
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Old 01-09-2011, 07:33 PM   #5 (permalink)
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My dually D70HD rear axle is 72"
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Old 01-09-2011, 08:46 PM   #6 (permalink)
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Front is 69.25 - Ideal rear would be 68.5 for me.

I'm trying to match widths to allow clearance of the rear tires and keep the same offset wheels all the way around. I can get spacers for the rear of the 60, but am looking at the cost by the time I bore the hubs, go 35 spl Cro-moly, a 35 spl locker and disc brakes...so it seems to be cheaper to just go straight to a newer axle with at least the brakes and large bore hubs and sell off my 60.

What are the widths of late model disc brake Chevy and dodge axles?
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Old 01-10-2011, 06:29 AM   #7 (permalink)
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It isn't worth a bunch of trouble to change your track width 1 or 1.5 inches. As others have said, you want the rear axle to be narrower than the front anyway. If you need more clearance in the rear then just use wheels will a little less backspacing. You can still run the same backspacing in the front. Changing your backspacing by 1/2 or 3/4" is an easier option. Just run a 14 bolt and whatever backspacing you need to get the overall width you want. You are probably going to want beadlocks anyway, so spend your money on those and get a cheap 14 bolt.
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Old 01-10-2011, 07:54 PM   #8 (permalink)
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It isn't worth a bunch of trouble to change your track width 1 or 1.5 inches. As others have said, you want the rear axle to be narrower than the front anyway. If you need more clearance in the rear then just use wheels will a little less backspacing. You can still run the same backspacing in the front. Changing your backspacing by 1/2 or 3/4" is an easier option. Just run a 14 bolt and whatever backspacing you need to get the overall width you want. You are probably going to want beadlocks anyway, so spend your money on those and get a cheap 14 bolt.
Beadlocks - check. Part of the problem is I've already spent the money on a set of Walker's. The back spacing work fine for 37's and leafs. Now going to 42's an coil-overs I need to set the wheels out a little more to clear the coilovers. So Spacers are probably the way I'm heading, but by the time I do that + disc coversion + 35 spline, etc. I may be better off just getting a late model dodge or Chevy 14 bolt (AAM 10.5) to get the width, brakes, etc.
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Old 01-25-2011, 08:19 PM   #9 (permalink)
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look at ford vans from mid late 90s, d60u or d70u with disc brakes
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Old 05-18-2014, 08:56 PM   #10 (permalink)
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I'd dragging this thread back up. I ran spacers and put 30 spline alloy shafts in my old D60 for a few years...and broke.

It's time to go to something new. I'm leaning toward a '99-04 Ford Van D60 and swapping out to 35 spline axles. The second option is a late model GM14 Bolt (AAM 10.5). I want something with factory disk brakes and need to get it to 68.5" width.

Anyone know the weight difference between the two axles? I'm going to run 4.56 or 4.88 gears, so no difference between the two there.
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Old 05-18-2014, 10:15 PM   #11 (permalink)
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That van 60 is a good axle. Rear brake calipers are huge on the van though, bigger than the front. Too big for regular master cylinders imo. Should be 68 inches? The Sterling 10.50 is also right at 68.5 too. Better caliper size.
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Old 05-18-2014, 10:49 PM   #12 (permalink)
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Got off my lazy ass and measured mine. For the record, a D70 SRW from a 1995 Dodge diesel is about 69-69.5" from WMS to WMS.
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