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Re: Is NE1 running a Dana 70 in a hi HP street application?
[Re: maximum entropy]
#1124953
12/01/11 10:07 PM
12/01/11 10:07 PM
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Joined: Jan 2003
Posts: 9,670
Lima, Peru
domingo
OP
EL Master
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OP
EL Master
Joined: Jan 2003
Posts: 9,670
Lima, Peru
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Quote:
Quote:
Quote:
realistically it won't matter what rear you run on the street. i ran a 7.25 on the street with a 440 and narrow tires for quite a while. it never did blow. four digit power is going to be an exercise in frustration. your tires won't stand a chance.
Thats the main factor.... like he believes it will
hook on the street... I'm sure it would live with
8 3/4 because it wont hook... grand idea though
yup!
I dont believe it will hook on the street, nor I pretend to use that much power on the street. Im not that dumb!
This car is to be used at the track, at its full potential...and I dont want it to break and risk causing damage to myself, other drivers or the car itself, however, Id love to get to the track driving the car....or driving it to the local burger joint eventually....and filling it up at the pump with92 octane before racing....have rolling windows with factory glass, not lexan, have full working lights and blowing the doors off the cars that get there trailered and only run race gas....
why? because I want to!!! and because I think its possible...
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Re: Is NE1 running a Dana 70 in a hi HP street application?
[Re: hemicop]
#1124955
12/01/11 10:24 PM
12/01/11 10:24 PM
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Joined: Jan 2003
Posts: 9,670
Lima, Peru
domingo
OP
EL Master
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OP
EL Master
Joined: Jan 2003
Posts: 9,670
Lima, Peru
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Quote:
If it were me, a D60 with 40 or 44-spline axles & a spool, driven CAREFULLY with a well built PG (Rossler, TCS, Brunos, etc.) budgeting 5500-10k for a trans would be what I'd expect to pay for a driveline. Keep in mind, though that early F/Cs ran TFs & D60s & were making the kind of horsepower, and more, you're talking about & they lived pretty well. The top SS/AH guys are running in the 900hp area & they're just using a built TF, so I think you're over-building & over thinking your project.
For what it's worth, Car CRaft Magizine's old M/P car run by then-editor John Dianna had a D70 in it, so I guess it IS do-ablebut with today's engineering technology, cryogenics for examle, why would you adhere to the old "bigger is better" theory?
I think a super case with a spool and 9,5" gears is what I would need!
I already have a Mark Williams 9" in my race car with 35 spline strange axles and a spoolI dont have 40 spline axles because my housing is the smalled diameter one......I wonder if the 9,5 super case will just fit on the housing I have now...which is a modified and braced regular 9" housing.
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Re: Is NE1 running a Dana 70 in a hi HP street application?
[Re: domingo]
#1124956
12/01/11 10:42 PM
12/01/11 10:42 PM
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Joined: Feb 2004
Posts: 1,417
Chicago, IL
blownEFI
pro stock
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pro stock
Joined: Feb 2004
Posts: 1,417
Chicago, IL
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How much does the car weigh? Three things kill driveline parts: weight, torque, and traction! Since we're talking probably big displacement turbo motor you're going to have lots of torque. If your car is heavy and you put slicks (or drag radials) on it and launch it on a well prepared surface then you're going to find the limits of your driveline. Given that kind of scenario I would say a Dana 60 might be marginal. The detroit locker is pretty strong, but I'd be more concerned about twisting the axle tubes. Aftermarket Dana's are welded 360 degrees, but if your tubes are long enough you can still bow them because it's pretty hard to back-brace a Dana. Also, you can't run 40 spline axles with a Detroit Locker, max is 35 splines. Still I think the weak link would be the housing/tubes. If it were me I would build a 9 inch ford, fabricated housing with integrated back-brace. That along with 35 spline axles and the locker would probably be fine. And, yes several of the quick cars on Drag Week run Gear Vendors overdrive, so that thing is pretty solid. Here's an example of such a rear end built for a heavy turbo street car with leaf spring rear suspension (note the notches in the back brace for the shocks). This car has a 588 c.i. wedge with 106mm turbo, built TH400 and Gear Vendors.    
"These go to eleven", Nigel Tufnel
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Re: Is NE1 running a Dana 70 in a hi HP street application?
[Re: BeEtLeJuIcE !]
#1124960
12/02/11 02:42 AM
12/02/11 02:42 AM
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Joined: May 2011
Posts: 625
Oakville, Wa
HOTMOPR
mopar
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mopar
Joined: May 2011
Posts: 625
Oakville, Wa
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I picked up a dana 70 out of a 96 dodge 3/4 ton for free and its perfect! It is one heavy sumbitch! I am going to narrow it with dana 60 ends. I found Randys ring and pimion sells a spool for it. Factory 3.54 gears should be about right..
67 Barracuda, 470" B, Glide, FuelTech FT600, Precision, Ptc, QA1, Calvert, Smith racecraft, Afco, Dana 60. 275 radials
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Re: Is NE1 running a Dana 70 in a hi HP street application?
[Re: blownEFI]
#1124962
12/03/11 09:03 PM
12/03/11 09:03 PM
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Joined: Jan 2003
Posts: 8,016
Polson, MT
DoctorDiff
master
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master
Joined: Jan 2003
Posts: 8,016
Polson, MT
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A Strange Ultra case with 9.5" big pinion pro gear, 40 spline spool and fab housing would the the easy way. It all depends on how "streetable" the car is, how you drive the car and how hard the car hooks up, however. A 40 spline Detroit Locker is available for a Dana 60, but NOT for a 9". I don't know if a 40 spline Detroit Locker is available for a Dana 70, but knowing the internals interchange between the 2 carriers, it shouldn't be too hard to build. Someone is about to release a third-member and Fab housing that takes Dana 60 or 70 gears for the 4 x 4 market. A Dana 70 third-member with 40 spline axles and Detroit Locker would be the ultimate rearend for a super high torque street car. Here is a teaser: http://www.4xfanatics.com/forums/content.php?56-Sixty9-axle
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Re: Is NE1 running a Dana 70 in a hi HP street application?
[Re: DoctorDiff]
#1124965
12/04/11 02:01 PM
12/04/11 02:01 PM
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Joined: Jan 2003
Posts: 9,670
Lima, Peru
domingo
OP
EL Master
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OP
EL Master
Joined: Jan 2003
Posts: 9,670
Lima, Peru
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Quote:
A Strange Ultra case with 9.5" big pinion pro gear, 40 spline spool and fab housing would the the easy way. It all depends on how "streetable" the car is, how you drive the car and how hard the car hooks up, however.
A 40 spline Detroit Locker is available for a Dana 60, but NOT for a 9".
I don't know if a 40 spline Detroit Locker is available for a Dana 70, but knowing the internals interchange between the 2 carriers, it shouldn't be too hard to build.
Someone is about to release a third-member and Fab housing that takes Dana 60 or 70 gears for the 4 x 4 market.
A Dana 70 third-member with 40 spline axles and Detroit Locker would be the ultimate rearend for a super high torque street car.
Here is a teaser:
http://www.4xfanatics.com/forums/content.php?56-Sixty9-axle
Thats what Im talking about!
The only question is: what are the limits of the detroit locker???
Also with a Dana 70 on a third member, you can have a back braced fabbed housing!!! cool!!!
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Re: Is NE1 running a Dana 70 in a hi HP street applicat
[Re: domingo]
#1124966
12/05/11 03:31 AM
12/05/11 03:31 AM
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Joined: Jan 2003
Posts: 8,847
poplar bluff mo.
toplescuda
I Whine
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I Whine
Joined: Jan 2003
Posts: 8,847
poplar bluff mo.
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I got a dana 70 out of a ton 1/2 camper thinking it was a 60 paid 35 bucks for it has 4.56 gear was planing on having it cut down for the cuda but everyone said normal 60 parts wont work. Can this rear be converted or not cause its one step away from being hauled off for scrap 
1970 barracuda convert. 1 of 59
1970 pro street A.A.R. clone (panther pink)
1971 charger
2015 hellcat challenger. Redline red
2014 quad cab 4x4 ram 8 speed hemi
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