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Old 12-15-2006, 06:21 PM   #1 (permalink)
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Dana 60 3.08?

I'm looking for higher ratio gears for a dana 60. The lowest I have been able to find after market is 3.54. I found a ford F250 with a 60 and 3.33 during a trip to a local pick and pull. Are there any factory applications for 3.08s?
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Old 12-15-2006, 06:47 PM   #2 (permalink)
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I'm looking for higher ratio gears for a dana 60. The lowest I have been able to find after market is 3.54. I found a ford F250 with a 60 and 3.33 during a trip to a local pick and pull. Are there any factory applications for 3.08s?
Dana 61s have 3.08s. I believe the lowest is 3.54 for the 60s. You can't fit anything lower than than that because there isn't enough room for that huge pinion.
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Old 12-15-2006, 06:57 PM   #3 (permalink)
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Ahh! That makes sense I suppose! I was going to grab that 3.33 diff but I was thinking that it might be a bit hard to find replacement gears should the need occur. Dana 61 huh...I don't know much about them but I keep hearing ppl say to avoid them. I'll have to do some more digging to figure out how to tell a 60 from a 61 and whether a 61 will work for me. Thanks for the reply.

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Old 12-15-2006, 07:35 PM   #4 (permalink)
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The only reason people tell you to avoid the D61 is because of the limited ratio selection, from the factory the lowest gear ratio you could get in one was 4.10 and w/o doing some odd ball carrier/spacer/gear set swaps, you cannot get any lower than that. The D61 has larger diameter tubes than most D60s, more center section webbing, and in some cases larger spindles. They are plenty tough, and use indenticle sized gears to a D60, the only difference is the pinion offset in the casting of the center section.

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Old 12-15-2006, 07:59 PM   #5 (permalink)
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The only reason people tell you to avoid the D61 is because of the limited ratio selection, from the factory the lowest gear ratio you could get in one was 4.10 and w/o doing some odd ball carrier/spacer/gear set swaps, you cannot get any lower than that. The D61 has larger diameter tubes than most D60s, more center section webbing, and in some cases larger spindles. They are plenty tough, and use indenticle sized gears to a D60, the only difference is the pinion offset in the casting of the center section.

Later,
Jason
you can get over 4.10 gears, you just need the right carrier and spacer.
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Old 12-15-2006, 08:04 PM   #6 (permalink)
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Ok d61 aside, why do you want 3.08's? Do you have double 4:1 tcases with a 7:1 first gear or somthing?
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Old 12-15-2006, 08:29 PM   #7 (permalink)
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you can get over 4.10 gears, you just need the right carrier and spacer.

No shit, sounds like something I said...

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...D61 is because of the limited ratio selection, from the factory the lowest gear ratio you could get in one was 4.10 and w/o doing some odd ball carrier/spacer/gear set swaps...
I am fairly certain 4.10 is the lowest D61 gearset, you can use D60 gears and a special spacer on the D61 carrier, or D61 gears and a standard spacer on a D60 carrier, but for ratios available for a D61, on a D61 carrier, W/ D61 gears is 4.10

But like the other guy says, why do you want such a high ratio? Just a highway DD or something?
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Old 12-15-2006, 10:53 PM   #8 (permalink)
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Well if you had a 4wd ford truck with a powerstroke you could put 3.08s in both ends like the 2wd guys and get better fuel milage & higher top end speed
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Old 12-16-2006, 02:00 AM   #9 (permalink)
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Thanks for the info on the 61! I found some info in Billavista's Dana 60 Bible which is something I didn't check before as it is listed as "front dana 60" and I had no idea that a 61 was ever offered as a front diff...learn something new everyday. 3.00 and 3.07 are offered for the D61, perfect but goofy offsets, spacers, dana 61 specific gears...the million dollar question... will an ARB for a 60 work in a 61?

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Old 12-17-2006, 11:14 AM   #10 (permalink)
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Ha, I just put a detroit and 4.56's in a D61. No problem...
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Old 12-17-2006, 11:28 AM   #11 (permalink)
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4.88 and arb no problem in a 61. the lowest for a 60 is 3.31 3.33 is dana 61
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Old 12-17-2006, 11:33 AM   #12 (permalink)
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Fords are easy... if its a Dana axle and says 3.07 on the tag.... it can't really be anything but a D61.
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Old 12-17-2006, 01:03 PM   #13 (permalink)
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4.88 and arb no problem in a 61. the lowest for a 60 is 3.31 3.33 is dana 61
What size of spacer and which Dana 60 carrier have you used?
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Old 12-17-2006, 01:22 PM   #14 (permalink)
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When I started searching for info for my D61/TTB50 frankenstein axle, I spoke with reider raceing about gearing choices for it. I didn't have the factory D61 carrier, as the PO had put D60 stuff in it and absolutely shreaded the gears, and reider told me that I could do the following. D60 4.10 and numerically lower carrier, standard D60 ring gear space (about $20 from MR Gasket), and any D61 ratio, although most D61 gears have been discontinued, and there are only a few ratios left available. Or I could go D60 4.56 and numerically higher ratio and their D61 spacer, (about $70 from them), and any D60 gear set for the 4.56 serries carrier.

I am going to do 4.10's since I have a 4.10 D60 carrier, but I am looking for 3.54 D61 gears for it, as that is what I prefer, but they have been discontinued...

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Old 12-17-2006, 01:33 PM   #15 (permalink)
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What size of spacer and which Dana 60 carrier have you used?
4.56 and lower 2 spacers mr. gasket machined right thrust back .080 to make up distance
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Old 12-17-2006, 01:50 PM   #16 (permalink)
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If anyone is looking for a Dana 61 Detroit locker 30spline I have one. 250.00 and It will be on your doorstep.

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Old 12-17-2006, 06:45 PM   #17 (permalink)
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K this is odd, the thread summary on the main page says 19 replies yet I only show 16...

Anyway, thanks for all the awesome 61 info. Another 4 hours at pick and pull and I didn't find anything lower than 3.54. Anyone know of an application that should have 3.07? I'm getting tired of crawling under trucks and vans to scrape the BOM tag clean enough to read it only to find it's not what I'm looking for.
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Old 12-17-2006, 07:42 PM   #18 (permalink)
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Anyone know of an application that should have 3.07? I'm getting tired of crawling under trucks and vans to scrape the BOM tag clean enough to read it only to find it's not what I'm looking for.
I saw a D61FF at the wrecking yard last week... was labelled 83 F250. Tip: It does NOT have even a slightly smooth shape to it. Very chunky.
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Old 12-17-2006, 07:58 PM   #19 (permalink)
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Quote:
Originally Posted by Ground and Pound View Post
K this is odd, the thread summary on the main page says 19 replies yet I only show 16...

Anyway, thanks for all the awesome 61 info. Another 4 hours at pick and pull and I didn't find anything lower than 3.54. Anyone know of an application that should have 3.07? I'm getting tired of crawling under trucks and vans to scrape the BOM tag clean enough to read it only to find it's not what I'm looking for.
front or rear? i know for fronts, most common is from an early cummins dodge without overdrive.
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Old 12-17-2006, 07:58 PM   #20 (permalink)
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61s with 3.07s

Dodge FRONTS
610265-1,-3. 1987-88

610333-1,-3. 610342-1,-3. 1989

610358-1,-3 1991-92

610431-1 610406-1,2,3,4 1992-93



FORD REARS

603438-6 F-250 1974-75

603713-5 603714-1 603540-5 603899-1 1976-78 F-250 4X2


603594-19 1975-78 E-250 (VAN)

603925-1 1979 F-250 4X2

603932-7 1979-80 E-250

603946-1,2 1980-81 F-250 SEMI-FLOAT 4X2

605022-10,12 1981-83 E-350 DRW CHASSIS

605039-5 1981-83 F-350 CHASSIS


Good Luck,
Dan
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Old 12-17-2006, 08:27 PM   #21 (permalink)
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I should have mentioned that I just needed a rear.

Thanks for that list Dan...where'd you track that down?
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Old 12-17-2006, 08:33 PM   #22 (permalink)
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I have a Dana/Spicer library that dates from 1967-2000

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Old 12-20-2006, 06:16 PM   #23 (permalink)
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I made a quick trip to the wreckers with Dan's cheap sheet of rigs with 3.07 Dana 61's. The first truck I saw that fit the year and model in that list did infact have 3.07's. Thanks for the info, it saved me a ton of time
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