Re: D-60 vs 9"....here we go again....
[Re: hemienvy]
#2605162
01/11/19 10:36 PM
01/11/19 10:36 PM
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Joined: Jan 2003
Posts: 8,082 Tulsa OK
Bad340fish
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master
Joined: Jan 2003
Posts: 8,082
Tulsa OK
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if a 9 inch is dangling under something the gender should be easy to spot lol
68 Barracuda Formula S 340
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Re: D-60 vs 9"....here we go again....
[Re: TRENDZ]
#2605193
01/11/19 11:31 PM
01/11/19 11:31 PM
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Joined: Jan 2011
Posts: 4,785 Utah and Alaska
astjp2
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master
Joined: Jan 2011
Posts: 4,785
Utah and Alaska
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Passenger car D 60s have thinner wall tubing than Ford truck D 60s. Floater style Dana axles have very thick wall tubes. All 70s are floaters, so the tubing is very thick. It doesn’t seem to far fetched that a 70 could be 60lbs heavier without axle ends/ brakes. I have shipped 70 housings via UPS to Dutchman and back, not much heavier than a 60 truck housing. So realistically it is a minor difference between a 70 built for a car...and a truck 60..and way more gear options than a 9"
1941 Taylorcraft 1968 Charger 1994 Wrangler 1998 Wrangler 2008 Kia Rio 2017 Jetta
I didn't do 4 years and 9 months of Graduate School to be called Mister!
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Re: D-60 vs 9"....here we go again....
[Re: fourgearsavoy]
#2605198
01/11/19 11:36 PM
01/11/19 11:36 PM
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Joined: Jan 2011
Posts: 4,785 Utah and Alaska
astjp2
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master
Joined: Jan 2011
Posts: 4,785
Utah and Alaska
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One thing to consider is the bending of axle tubes. This was always something Monte Smith pointed out. At high power levels, you can't stop the tubes from bending on a Dana. 9" rears have all sorts of stronger housings and their design makes them easy to brace up real good. The Dana housing in my car is bent and I'm not at a really high power level so it only takes a heavy stick car with a stiff clutch and medium traction to bend one. There are some guys that brace them with tubes and heims like the 8.8 Ford guys do. I'm not sure the back brace tubes do any thing with the Ultimate 60 covers have but it looks cool Gus maybe a car housing with 1/4" tubes, wont bent 3/8" or 1/2" tubes...unless you tweaked the casting...was the tubes welded all the way around the housing? Tim
1941 Taylorcraft 1968 Charger 1994 Wrangler 1998 Wrangler 2008 Kia Rio 2017 Jetta
I didn't do 4 years and 9 months of Graduate School to be called Mister!
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Re: D-60 vs 9"....here we go again....
[Re: hemienvy]
#2605215
01/12/19 12:07 AM
01/12/19 12:07 AM
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Joined: Jan 2005
Posts: 2,540 Milwaukee WI
TRENDZ
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master
Joined: Jan 2005
Posts: 2,540
Milwaukee WI
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Who sells a 3.50 pro gear for a 70? Who sells any ratio pro gear for a 70? I need a spare 3.08 ring and pinion for my 70 in the Dodge diesel. Where can I get this? I can easily buy either for a 9”...
"use it 'till it breaks, replace as needed"
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Re: D-60 vs 9"....here we go again....
[Re: TRENDZ]
#2605222
01/12/19 12:12 AM
01/12/19 12:12 AM
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Joined: Jan 2011
Posts: 4,785 Utah and Alaska
astjp2
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master
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Utah and Alaska
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I guess that you missed the part about 3.54 to 7.17. The 3.08 gears are for a 71, not a 70, they have different offset for the lower gear. I run Dana Spicer gears for everything, if it needs anything extra strength wise, I can get them cryo'd for about $150 no progear necessary with a 10.5" ring gear. You can get a bearing cap support cover, that is about it for aftermarket in a car if you worry about it. Tim Who sells a 3.50 pro gear for a 70? Who sells any ratio pro gear for a 70? I need a spare 3.08 ring and pinion for my 70 in the Dodge diesel. Where can I get this? I can easily buy either for a 9”...
Last edited by astjp2; 01/12/19 12:17 AM.
1941 Taylorcraft 1968 Charger 1994 Wrangler 1998 Wrangler 2008 Kia Rio 2017 Jetta
I didn't do 4 years and 9 months of Graduate School to be called Mister!
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Re: D-60 vs 9"....here we go again....
[Re: astjp2]
#2605270
01/12/19 02:42 AM
01/12/19 02:42 AM
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Joined: Feb 2011
Posts: 1,454 Glendora Ca.
Just-a-dart
pro stock
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pro stock
Joined: Feb 2011
Posts: 1,454
Glendora Ca.
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I think a narrow frame rail 4 link tube car, a stock frame B body and a rock crawler jeep all have different needs. There is no such thing as a universal best rear end.
But Moparts is Moparts and people love to have an opionion about stuff they have never done.
"Just a Bracket car dressed up like a streetcar"
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Re: D-60 vs 9"....here we go again....
[Re: hemienvy]
#2605287
01/12/19 04:14 AM
01/12/19 04:14 AM
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Joined: Jan 2003
Posts: 8,017 Polson, MT
DoctorDiff
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master
Joined: Jan 2003
Posts: 8,017
Polson, MT
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A new Dana 60 works nicely in a high torque, leaf spring equipped vehicle.
The lack of a back brace yields a clean installation around the spring perches, U-bolts and shocks. Unlike a 9" rear where the tubes weld to a sheet metal center, Dana tubes insert 4" deep into a machined, cast housing. Because of this, a back brace is not AS important.
Most guys who complain of bent Dana 60 housings usually run stock, low grade tubing spot welded to the center without an additional weld around the diameter.
BTW, I'm having a batch of 3.23 Dana 60 gears produced. They will be in stock in a month.
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Re: D-60 vs 9"....here we go again....
[Re: astjp2]
#2605309
01/12/19 09:14 AM
01/12/19 09:14 AM
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Joined: Jan 2005
Posts: 2,540 Milwaukee WI
TRENDZ
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master
Joined: Jan 2005
Posts: 2,540
Milwaukee WI
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I guess that you missed the part about 3.54 to 7.17. The 3.08 gears are for a 71, not a 70, they have different offset for the lower gear. I run Dana Spicer gears for everything, if it needs anything extra strength wise, I can get them cryo'd for about $150 no progear necessary with a 10.5" ring gear. You can get a bearing cap support cover, that is about it for aftermarket in a car if you worry about it. Tim Who sells a 3.50 pro gear for a 70? Who sells any ratio pro gear for a 70? I need a spare 3.08 ring and pinion for my 70 in the Dodge diesel. Where can I get this? I can easily buy either for a 9”... 3.0 series are 70U. 71 is a name someone invented because there is a dfference, but its not a corporate name. The “U” is for undercut. They bore the housing for clearance for the pinion teeth. The pinion is not offset. You can put a 3.54 gearset into a 70U. You can put a 3.08 in a standard 70 or 70HD if you clearance the casting for the pinion teeth. Anyway, its a heavy truck rear end. You can never make it as strong or as light as a good 9”. If you are stuck on putting an oversized ring and pinion in, you can do that with a 9” too...and they are pro gears with oversized pinion pins. Just adding to the “here we go again” factor!😂
"use it 'till it breaks, replace as needed"
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Re: D-60 vs 9"....here we go again....
[Re: astjp2]
#2605491
01/12/19 05:07 PM
01/12/19 05:07 PM
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Joined: Dec 2005
Posts: 12,318 Fulton County, PA
CMcAllister
Mr. Helpful
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Mr. Helpful
Joined: Dec 2005
Posts: 12,318
Fulton County, PA
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Passenger car D 60s have thinner wall tubing than Ford truck D 60s. Floater style Dana axles have very thick wall tubes. All 70s are floaters, so the tubing is very thick. It doesn’t seem to far fetched that a 70 could be 60lbs heavier without axle ends/ brakes. I have shipped 70 housings via UPS to Dutchman and back, not much heavier than a 60 truck housing. So realistically it is a minor difference between a 70 built for a car...and a truck 60..and way more gear options than a 9"
If the results don't match the theory, change the theory.
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