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Old 06-09-2012, 10:32 PM   #1 (permalink)
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Full Float HP Rear Dana 60

I currently have a Dana 60 FF rear axle under my Jeep and I am buying a 93 Ford F-350 HP housing this week end. The plan is to take the diff/ inner tubes from the HP housing and the brakes/ outer flanges from my current FF axle. I am going to sleeve with 2.625" OD x .25" wall DOM, press the pieces together, and plug/ but weld the joint.

Will I need a reverse rotation or standard rotation ring and pinon set?

I'm having a difficult time visualizing the orientation...
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Old 06-09-2012, 10:37 PM   #2 (permalink)
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Reverse rotation
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Old 06-09-2012, 10:44 PM   #3 (permalink)
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Originally Posted by keefb View Post
I currently have a Dana 60 FF rear axle under my Jeep and I am buying a 93 Ford F-350 HP housing this week end. The plan is to take the diff/ inner tubes from the HP housing and the brakes/ outer flanges from my current FF axle. I am going to sleeve with 2.625" OD x .25" wall DOM, press the pieces together, and plug/ but weld the joint.

Will I need a reverse rotation or standard rotation ring and pinon set?

I'm having a difficult time visualizing the orientation...
Considering you have 40's, I would suggest Jana 76 and HP Dana 70 gears, load bolt install kit, and carrier bearing girdles. Other wise you might want to take it easy. But you only have one ratio available with hp70 gears and it's 500 bones. Low pinions are stronger in the back unless you engine is backward.
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Old 06-09-2012, 11:02 PM   #4 (permalink)
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Originally Posted by xj9140 View Post
Considering you have 40's, I would suggest Jana 76 and HP Dana 70 gears, load bolt install kit, and carrier bearing girdles. Other wise you might want to take it easy. But you only have one ratio available with hp70 gears and it's 500 bones. Low pinions are stronger in the back unless you engine is backward.
That's quite the $1500+ suggestion. Not that I necessarily disagree with you, but wouldn't blame the OP one bit for wanting to actually break a stock gearset first. There are also 3 ratios for the hp70; 4.10 and 5.13 from gm$$$$, and 5.38 from Currie. I'm waiting on final pricing from Currie on their center because all of the stuff you mentioned, plus a throat bore has got to be getting close.
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Old 06-09-2012, 11:03 PM   #5 (permalink)
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Reverse rotation
What part of either axle is reverse rotation?
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Old 06-09-2012, 11:14 PM   #6 (permalink)
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That's quite the $1500+ suggestion. Not that I necessarily disagree with you, but wouldn't blame the OP one bit for wanting to actually break a stock gearset first. There are also 3 ratios for the hp70; 4.10 and 5.13 from gm$$$$, and 5.38 from Currie. I'm waiting on final pricing from Currie on their center because all of the stuff you mentioned, plus a throat bore has got to be getting close.
First I've heard of a throat bore. What throut?. I can't fit anything larger than 37 spline axles with out first replacing spindles and hubs. I'm worried if I come down hard the spindles will break off. I'm done spending money for at least six months.
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Old 06-09-2012, 11:16 PM   #7 (permalink)
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What part of either axle is reverse rotation?
Aren't hi-pinion axles also referred to as "reverse cut," I ASSumed that was the angle he was coming from and trying to speak his language. Guess the appropriate Mr. N answer would be "the correct gearset for a 1993 F350 front axle, it does not make a difference that it will be a rear axle."
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Old 06-09-2012, 11:20 PM   #8 (permalink)
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Quote:
Originally Posted by xj9140 View Post
First I've heard of a throat bore. What throut?. I can't fit anything larger than 37 spline axles with out first replacing spindles and hubs. I'm worried if I come down hard the spindles will break off. I'm done spending money for at least six months.
Perhaps you should look up what Carl Jantz is doing. In addition to the jana76, load bolt and girdle kit mentioned by xj9140 (all Jantz products), Carl has also mentioned having the "throat" (where the upper pinion bearing goes) bored to run a larger than stock D60 upper bearing and 35 spl pinion.

Edit-whoops, thought that was another post from Mr. N. check the last couple pages of the load bolt thread and you will see mention of the "bore"

Last edited by Wilson; 06-09-2012 at 11:22 PM.
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Old 06-10-2012, 09:15 AM   #9 (permalink)
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Aren't hi-pinion axles also referred to as "reverse cut," I ASSumed that was the angle he was coming from and trying to speak his language. Guess the appropriate Mr. N answer would be "the correct gearset for a 1993 F350 front axle, it does not make a difference that it will be a rear axle."
So you're saying I can run the same orientation gear set that was originally in this axle?

Wont the gears be meshing backward?

Thanks for the info everyone, but I'm starting to think that it might not be worth the trouble. Either way I'm narrowing the axles and thought it would be cool to have the same diff front and rear.
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Old 06-10-2012, 10:29 AM   #10 (permalink)
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The gear set is cut based on pinion location, not where you happen to place the axle. I think it is physically impossible to install a low pinion gearset in a high pinion axle, but I've never tried.
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Old 06-10-2012, 10:37 AM   #11 (permalink)
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So you're saying I can run the same orientation gear set that was originally in this axle?

Wont the gears be meshing backward?

Thanks for the info everyone, but I'm starting to think that it might not be worth the trouble. Either way I'm narrowing the axles and thought it would be cool to have the same diff front and rear.
Running a high pinion diff in the rear you will be running on the "coast" side of the gear. Can you run low pinion gears in a high pinion diff?? The answer is NO.
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Old 06-10-2012, 11:10 AM   #12 (permalink)
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Running a high pinion diff in the rear you will be running on the "coast" side of the gear. Can you run low pinion gears in a high pinion diff?? The answer is NO.
Exact answer I was looking for.

The other option I was thinking of is getting a 14 bolt out of a mid 80's C&C DRW. Last weekend I narrowed my HP 60 front 6" to achieve a 63.25" WMS. I believe the C&C has a 63" WMS. With this option I would have 2 less shafts to shorten, but am I going to be stuck with BIG drum brakes?

So many options and configurations...
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Old 06-10-2012, 11:13 AM   #13 (permalink)
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Why not convert to discs? Hard to kill a 14 bolt
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Old 06-11-2012, 06:40 PM   #14 (permalink)
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Running a high pinion diff in the rear you will be running on the "coast" side of the gear. Can you run low pinion gears in a high pinion diff?? The answer is NO.
Not unless you have a Sixty9 after market gear housing witch will accept bot HP and LP gear sets unless I am mistaken.
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Old 06-11-2012, 07:46 PM   #15 (permalink)
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Not unless you have a Sixty9 after market gear housing witch will accept bot HP and gear sets unless I am mistaken.
He was not asking about the Sixty9 now was he???
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Old 06-11-2012, 08:44 PM   #16 (permalink)
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I'd get the 14 bolt and run disc brakes. Price and strength can't be beat! Unless of course there is some reason you need the high pinion for driveshaft issues. Also the 14 bolt you can run a Pinion/yoke guard! RuffStuff sells, the pinion guard, the disc brake conversion brackets, and any other brackets you may need.
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Old 06-12-2012, 08:17 AM   #17 (permalink)
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It wasn't necessarily for drive shaft purposes, although it would be better to have a lower pinion angle. Mostly, I thought it would be cool and handy to have same diff front and rear.

I decided on the 14 Bolt and found one at a parts yard for $150. I plan on disc conversion, and at some point a shave kit. I really want a parking brake, but I will probably go with a line lock instead. From what Ive read the Eldorado calipers are crap and a line lock seems simple enough.

Does anybody know if you can use a SRW conversion kit on a DRW axle?

There are several DRW conversion kits $$$, but I am not going to use the axle as a dualie so I don't need the clearance.
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