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Old 01-19-2007, 10:54 AM   #1 (permalink)
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Question dana 61 HELP???????

To start off my build has:
Chevy 350 bored and stroked
TH 350 auto
NP 205 doubled to Dana 300 with 4:1 kit
Dana 60 front 35 spline inner and outers, 4.88 gears
38 X 14.5 SX Swampers

Ok; I have been looking for a Dana 70 and came across what seems to be a Dana 61, 35 spline out of a 81-83 F350 Bill of material 605040-3.

How does this axle compare to the 70 or 60 with 35 spline shafts?
How easy is the 61 to get parts for?


Thanks
Jake
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Last edited by jeepester; 01-19-2007 at 11:39 AM.
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Old 01-19-2007, 11:17 AM   #2 (permalink)
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i was told by a axle dealer that there is no such thing as a d61 and if they was that all the parts are identicle,i have done a search in the past and found no manufacturers info on a d61 just people on the board who had said there is , so i dont know what to believe
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Old 01-19-2007, 11:26 AM   #3 (permalink)
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D61 is a high gear ratio (3.07?) D60. The housing is machined with a different pinion to ring offset to allow for the ginormous pinion that a 3.07ish gear requires.

The swap stackup of thick gear, spacer, oddball carrier, etc., has been covered here, but I don't know what terms to search for or remember exactly what has to be done to run it with normal ratios. GearMan knows, if he's around.
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Old 01-19-2007, 11:40 AM   #4 (permalink)
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Some time ago I found a Ford van with a D61, but when I posted on various boards, the overall consensus was to ignore it and find a D60. As I recall there are issues finding desirable gears, lockers, etc. for the D61.
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Old 01-19-2007, 11:44 AM   #5 (permalink)
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yea - D61 sucks!!! When I was looking for a rear 60, I brought home probably 2-3 D61 before I found an actual D60. You could theoretically use a stock one, but good luck finding aftermarket parts. Also, I bored out my spindles to accept 35 spline shafts, and if you plan on doing that, an easy way to tell if you've got the right axle is by looking at the wheel bearing. It should read 104949. Also, Reider Racing will look up the code on the axle and tell you exactly what it came out of. Just give them a call - really nice guys.
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Old 01-19-2007, 11:45 AM   #6 (permalink)
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Wink Dana bill of material list

Quote:
Originally Posted by Hendo View Post
i was told by a axle dealer that there is no such thing as a d61 and if they was that all the parts are identicle,i have done a search in the past and found no manufacturers info on a d61 just people on the board who had said there is , so i dont know what to believe
This axle does exist!!
http://www2.dana.com/pdf/X510-2CVSP.PDF ---Page 139---

And it has 4.10 gears

How does it compare???????

Thanks
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Old 01-19-2007, 11:51 AM   #7 (permalink)
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yea - D61 sucks!!!

.
That is what I'm looking for
Any more opinions

Thanks
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Old 01-19-2007, 12:02 PM   #8 (permalink)
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Here's a thread that points to other threads about the Dana 61..

/forum/general-4x4-discussion/245900-d61-gears-detroit-locker.html
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Old 01-19-2007, 12:09 PM   #9 (permalink)
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Here's a thread that points to other threads about the Dana 61..

http://www.pirate4x4.com/forum/showthread.php?t=245900
Thank's
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Old 01-19-2007, 12:48 PM   #10 (permalink)
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I just put 4.56 gears with a detriot in a D61. They do run 3.07's. I did have to run an offset carrier with a spacer and wide gear. I dont know about running a deeper gearset than a 4.56 though
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Old 01-19-2007, 12:55 PM   #11 (permalink)
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I just put 4.56 gears with a detriot in a D61. They do run 3.07's. I did have to run an offset carrier with a spacer and wide gear. I dont know about running a deeper gearset than a 4.56 though
Thank's
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Old 01-19-2007, 01:33 PM   #12 (permalink)
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Thank's
That's the thread I started. I do have a D61 in the rear of my CJ7 and I have
4.88 gears and a detroit locker in it. I got the gears, locker, and ring gear spacer
from Reider Racing. It's been in there for about 2 years without a problem.
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Old 01-19-2007, 01:36 PM   #13 (permalink)
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I didn't have the time to cross reference to find a Detroit, so I welded mine, 3 years and its still happy, so am I
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Old 01-19-2007, 01:45 PM   #14 (permalink)
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Give reider raceing a call. They have the skinny on what parts to mix and match to get different gear ratios. They also have a custom machined spacer so you dont have to do the mr. gasket spacer stack... The biggest downfall of the axle, is that most of the dana factory ratios for it have been discontinued. Not a big deal if you are trying to go lower than the factory 4.10, and don't mind useing a D60 carrier and spacer, but I have been trying to find 3.55 gears for one, and no one has them around anymore, and dana discontinued them a few years ago...

If you end up getting a locker for it, drop me a line, I would be very interested in buying your 35 spline carrier.
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Old 01-19-2007, 02:01 PM   #15 (permalink)
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After reading threads from 2002 and on dana 61 sound like a PITA but after setup sound OK I'll keep looking for a 14 bolt or 70.

THANKS for all the input and help
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Old 01-19-2007, 02:28 PM   #16 (permalink)
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I built one. IMHO, 61s are awesome axles. The tubes are bigger than a 60, the spindles are already big enough for aftermarket 35 spline shafts, and the housing has way more meat than a 60 but still has more clearance than a 70. To build mine, I used a 4.56 and numerically higher Detroit,had a custom spacer machined, then the 5.89s set-up perfectly.
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Old 01-19-2007, 03:11 PM   #17 (permalink)
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So did regular D60's ever come with 3.07's? Reason being is that I found some dodge one ton axles the webbing mark is too far gone to be able to read if 60 or 61 and I get read the BOM either. I checked the ring gear and it's def 3.07s front and rear (assuming 60 front, and I know its a 70 rear)...
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Old 01-19-2007, 05:48 PM   #18 (permalink)
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What year truck? My guess is 61. From what I remember, the 61 was created because the pinion for high gears wouldn't fit in the standard 60 housing so they built the 61 with slightly more pinion offset to accomodate the higher gears.
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Old 01-20-2007, 11:56 AM   #19 (permalink)
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So did regular D60's ever come with 3.07's? Reason being is that I found some dodge one ton axles the webbing mark is too far gone to be able to read if 60 or 61 and I get read the BOM either. I checked the ring gear and it's def 3.07s front and rear (assuming 60 front, and I know its a 70 rear)...
You found a D70U and an D61 if they had 3.07's. The 61 I set up was pretty simple, but the 70u took a bit more playing with different offset carriers, ring gears, carrier spacers.....
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Old 04-22-2008, 05:40 PM   #20 (permalink)
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i run 2 dana 61 front and back with 5.13 gear with out any issue, the way to run higher gear in them is simple, you need a carrier part number 706400x from spicer and a mr gasket ring gear spacer, only draw back is your locker is limited to a lunchbox locker or welded
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Old 05-05-2008, 07:46 PM   #21 (permalink)
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the dana 61 is a great axle if you can figure ou how to build it. Im running one in the rear of my 91 s-10 with 4.88 gears, detroit locker, and 38" baja claws with absolutely zero problems and it gets wheeled pretty hard in the mud..havent rock tested it yet. As was said before the 61 is esessially a 60 with the pinion slightly offset from the ring gear to allow for higher gears. the lowest stock gear for a 61 is 4.10 I believe, but with the carrier part and the ring spacer you can put what ever you want. Most major brands do make a variety of lockers for the 61 you gotta look around and find someone who knows what they are talking about. In my opinion the 61 is a little stronger than the 60 due to more housing struts.
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Old 05-05-2008, 08:10 PM   #22 (permalink)
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i was told by a axle dealer that there is no such thing as a d61 and if they was that all the parts are identicle,i have done a search in the past and found no manufacturers info on a d61 just people on the board who had said there is , so i dont know what to believe
According to Dana's own website the BOM that was shown is for a Dana 61, 4.10 gears and comes with a Trac-Loc.

FORD Model 61 REAR 1981 - 1983 F-350 - FULL FLOAT

Bill Of Material(605040-3) Differential Type( T/L) Ratio( 4.10)
Ring And Pinion Kit(706661-9X)


Gus
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Last edited by speedo; 05-05-2008 at 08:13 PM.
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Old 05-05-2008, 10:19 PM   #23 (permalink)
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I f you want all the benefits of the dana 61 ,ie 35 spline and thick-ass housing , find a dodge van with a HD 60 , its wide but ,as big as a dana70 with all the dana 60 ratios and parts . Late 70's and in the 80's , it will have a totally different look to the housing - Its smooth , with 2 parallel ribs , one about 2 inches ahead of the diff cover flange and then the diff cover flange is a matching rib and then on the top , between the pinion yoke and the diff cover , will be a large cast HD.
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Old 05-05-2008, 11:14 PM   #24 (permalink)
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Old 05-08-2008, 02:06 PM   #25 (permalink)
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IF you found a smokin deal on a 61 front this debate would be valid. for a rear, why ahssle with a 61? dana 60 rears are very common. if you can't find one i guarnatee you can find a 14 bolt or a sterling 10.25. both of these axles are VERY strong and have a large aftermarket following, plus you can get them for 150 or less!
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