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Old 09-08-2005, 08:37 AM   #1 (permalink)
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Ford axle opinions

Looking to find the weakness of some axles I'm considering. My current crawler is running 14bolt/D60 GM axles. Am about to start a new project and found a killer deal on 1988 F350 axles. D70 rear, D60 front. What are the problems different than my GM axles? Necked axle shafts? Weak knuckles? Anything? I beleive the Ford 60 is a driver side pumpkin, right?
Just want to know before I resume search for some GM axles. The huge size of the 70 worries me as I'll only be running 39.5s and the 70 seems like over kill.
Thanks for any guidance.
Joe
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Old 09-08-2005, 08:25 PM   #2 (permalink)
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Nothing can be overkill. I have a mustang that i run 35 spline axles in with 600 hp and 675 tq. That is not overkill it is precaution.
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Old 09-08-2005, 08:52 PM   #3 (permalink)
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The same issues you currently have with the 14B/D60 go along with the D70/60 combo. A14B hangs lower than a D70, doesn't it?

The Ford 60 will be reverse cut, meaning stronger R&P since you're using it up front.
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Old 09-09-2005, 07:07 AM   #4 (permalink)
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Yeah, Drivers drop RC dana 60. Unshaved the 14 bolt hangs lower than a dana 70, but not by too much. If you're running a 14 bolt on something now with similar sized tires you won't really notice much of a difference. I've got a buddy running that same 60/70 combo on 39.5s and he loves it, no worries about overtaxing the axles.
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Old 09-10-2005, 04:02 PM   #5 (permalink)
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Thanks for the input guys. The front Ford 60 was my real concern because of the spring pad distance. Quite a change between 31.5 centers and just over 36 inch centers. I'll give it a shot I think, especially since the HP Ford 60 can only be a good thing. Thanks for the little push I needed to make a decision.
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Old 09-10-2005, 04:20 PM   #6 (permalink)
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The D70 uses the same diff cover as a D60, so it can be clearanced to come close to the 60 overhang. The Ford HP60 uses 5 bolt hubs as opposed to the GM 6 bolt hub's. :shrug: The Ford needs unique stub shafts if you plan on upgrading to 35 spline outers. That isn't really a problem now because there are companies with them ready to be bolted in. Not to long ago, you needed to machine .600" off the end of a Chevy 35 spline stub shaft to make it work it on a Ford, or swap your ford outer's over to GM stuff. Not an issue anymore.

Ken
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Old 09-11-2005, 07:40 AM   #7 (permalink)
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Quote:
Originally Posted by kpj
The Ford HP60 uses 5 bolt hubs as opposed to the GM 6 bolt hub's.
Huh? Bolts for what?
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Old 09-11-2005, 07:48 AM   #8 (permalink)
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The only problem is with the front reverse cut D60...You cannot go lower then 5.38. But maby isn't a problem for you....right now
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Old 09-11-2005, 08:09 AM   #9 (permalink)
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Quote:
Originally Posted by CSP
Huh? Bolts for what?
I'm thinking he's talking about the spindles???
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Old 09-11-2005, 08:45 AM   #10 (permalink)
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I thought the 1988's had a Sterling 10.25" rear? I parted an 88 F350 out last year and it had a sterling not a D70. Anyhow, the sterling is a tough axle too, but there are fewer locker ad gear ratio choices for it than the Dana axles.

Later,
Jason
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Old 09-11-2005, 12:48 PM   #11 (permalink)
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Yah, what Cap'n Nemo said. 5 bolt spindles.
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Old 09-12-2005, 07:21 AM   #12 (permalink)
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Wicked, you never can tell until you peak under there... My buddy and I just parted out an 80s Chevy dually with a dana 60 front and a HD70 rear, I would have figured looking at the truck it would have been a 14 bolt... guess you just always have to look.
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