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Old 03-19-2005, 05:42 PM   #1
68 50th
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Dana 60 ratios avaliable?

Hi all,
I think I have a Dana 60 in my 71 3/4 ton (don´t have the truck home yet).
I was told from the seller it had a 4,10 ratio. I would like to get a lower (numerically) ratio, what is there to find? 3,54 or lower?
What vehicles to look for? Same years trucks, newer trucks or others like Dodge trucks with Dana 60?
Any help appreciated.
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1971 Cheyenne Super Custom Camper 475CBB/TH400/AC
1992 Silverado Sport Truck
1988 Silverado 2500 Ext Longbed 4x4
2001 GMC Sierra SLT 4x4
1990 Chevrolet K3500
1965 Pontiac Grand Prix
1980 Z 28 350/4-speed/AC/T-top
1980 Camaro Coupe V6/3-speed
1979 Buick Century Wagon

Last edited by 68 50th; 03-20-2005 at 01:24 AM.
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Old 03-19-2005, 09:21 PM   #2
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I have two dana 60s right now both w/ 4.10s one was in a 71 C20 and the other is in my 70 GMC. There are several manufacturers that make gears for the dana 60. You should have no problem getting the ratio you want. www.ring-pinion.com
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1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX
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1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone.
1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed.

1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm
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Old 03-19-2005, 11:01 PM   #3
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Hi, I was told not to put in to high of gears or I would lose my power on takeoff. Something to consider before buying.
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Old 03-20-2005, 01:06 AM   #4
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I could use a dana 60 rear with 4.10 gear if anyone is near Northern KY??
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Old 03-20-2005, 01:40 AM   #5
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I guess I drive it for a while to find out what I think about the 4,10 ratio before buying something else.
Thanks.
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1971 Cheyenne Super Custom Camper 475CBB/TH400/AC
1992 Silverado Sport Truck
1988 Silverado 2500 Ext Longbed 4x4
2001 GMC Sierra SLT 4x4
1990 Chevrolet K3500
1965 Pontiac Grand Prix
1980 Z 28 350/4-speed/AC/T-top
1980 Camaro Coupe V6/3-speed
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Old 03-20-2005, 05:31 AM   #6
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I'm running 3.54's in BB and I like them a lot better than the 4.10 on the freeway .
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Old 03-20-2005, 05:47 AM   #7
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There will be mostly freeway driving for me so I will keep an eye out for a 3,54, also have a BB, original 402.
Thanks
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1971 Cheyenne Super Custom Camper 475CBB/TH400/AC
1992 Silverado Sport Truck
1988 Silverado 2500 Ext Longbed 4x4
2001 GMC Sierra SLT 4x4
1990 Chevrolet K3500
1965 Pontiac Grand Prix
1980 Z 28 350/4-speed/AC/T-top
1980 Camaro Coupe V6/3-speed
1979 Buick Century Wagon
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Old 03-20-2005, 12:01 PM   #8
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Quote:
Originally Posted by 68 50th
There will be mostly freeway driving for me so I will keep an eye out for a 3,54, also have a BB, original 402.
Thanks
I got mine at a 4X4 parts house.
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72 3/4ton Custom Camper BB402/400 trans Dynomax Cerama-coat headers , Hei distributor ,Edelbrock 1411 air,ps,pb,leafsprings ,98 chevy 60/40 seat,S10 shoulder belts
tilt,3.54 Dana 60 rear. 16" Eagle wheels with LT265/75 16 tires,Gaylord Lid,H4 headlights with 100W relay conversion.


" If I knew I was going to live this long I would have taken better care of myself "
Marriage changes passion...suddenly you're in bed with a relative. A GUY'S PRAYER....

Lord, I pray for a nympho with huge boobs who owns a liquor store and likes to fish and hunt and has a Harley .Amen ,
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Old 03-20-2005, 12:06 PM   #9
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Are all Dana 60 gearsets interchangable? There's lots of Dodge guys with Dana 60 front axles that swap gear ratios. Tons of 3.54 and 4.11 gear sets out there on the diesel websites.
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Old 03-20-2005, 01:00 PM   #10
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Quote:
Originally Posted by Tx Firefighter
Are all Dana 60 gearsets interchangable? There's lots of Dodge guys with Dana 60 front axles that swap gear ratios. Tons of 3.54 and 4.11 gear sets out there on the diesel websites.
I am also wondering about the interchangeability, over here the best chance to find a used gear set would be from a 73 up C20 or Dodge van/truck with 8 lug axles.
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1971 Cheyenne Super Custom Camper 475CBB/TH400/AC
1992 Silverado Sport Truck
1988 Silverado 2500 Ext Longbed 4x4
2001 GMC Sierra SLT 4x4
1990 Chevrolet K3500
1965 Pontiac Grand Prix
1980 Z 28 350/4-speed/AC/T-top
1980 Camaro Coupe V6/3-speed
1979 Buick Century Wagon
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Old 03-20-2005, 03:11 PM   #11
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There will be mostly freeway driving for me so I will keep an eye out for a 3,54, also have a BB, original 402.
Thanks
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You might want to recheck your ratios as from the factory on a 2wd , the 3.54 was the only gear you could get when the 402 was ordered because of the high torque @ low rpm motor. On 4x4's the bb was not available and and the 4.10 was standard and the 4.56 was the only option available for the 6's, 307, and 350's. This is in reference to "20 series" models only.
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Old 03-20-2005, 03:56 PM   #12
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I will check what ratio there is in the truck as soon as it arrives here. I drove it just for a short test drive when I bought so I really can´t tell anything from that.
Thanks everyone for responding.
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Mats..
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1971 Cheyenne Super Custom Camper 475CBB/TH400/AC
1992 Silverado Sport Truck
1988 Silverado 2500 Ext Longbed 4x4
2001 GMC Sierra SLT 4x4
1990 Chevrolet K3500
1965 Pontiac Grand Prix
1980 Z 28 350/4-speed/AC/T-top
1980 Camaro Coupe V6/3-speed
1979 Buick Century Wagon
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Old 03-20-2005, 05:47 PM   #13
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My dana 60 3:54 is really good on highway driving. At 70 MPH it runs about 2800 RPMs
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Old 04-18-2006, 07:51 PM   #14
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Re: Dana 60 ratois avaliable?

Quote:
Originally Posted by franko72
My dana 60 3:54 is really good on highway driving. At 70 MPH it runs about 2800 RPMs
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tilt,3.54 Dana 60 rear. 16" Eagle wheels with LT265/75 16 tires,Gaylord Lid,H4 headlights with 100W relay conversion.


" If I knew I was going to live this long I would have taken better care of myself "
Marriage changes passion...suddenly you're in bed with a relative. A GUY'S PRAYER....

Lord, I pray for a nympho with huge boobs who owns a liquor store and likes to fish and hunt and has a Harley .Amen ,
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Old 03-20-2005, 08:13 PM   #15
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There's a 72 Cheyenne at a friends that lists a 402 BB and 4.10 ratio rear end. I looked too...and that was the option it came with. I've had 2 1970 3/4 ton GMC's that both had 350 engines and 3.54 rear gears..I still got one of rear diffs and it was rear coils on both.
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Old 03-21-2005, 01:53 AM   #16
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The book: "Catalog of Chevy Truck ID Numbers 1946-1972" doesn´t list the 3,54 ratio at all for 1970/1971 C-20 series as a possible option, the ratios avaliable for C-20 series 1970/1971 is 4,10, 4,56, 4,57, 5,14.
For 1972 C-20 series the ratios in the option list is 3,54, 4,10, 4,56, 4,57.
These kind of books have been wrong before I guess.
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1971 Cheyenne Super Custom Camper 475CBB/TH400/AC
1992 Silverado Sport Truck
1988 Silverado 2500 Ext Longbed 4x4
2001 GMC Sierra SLT 4x4
1990 Chevrolet K3500
1965 Pontiac Grand Prix
1980 Z 28 350/4-speed/AC/T-top
1980 Camaro Coupe V6/3-speed
1979 Buick Century Wagon
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Old 04-18-2006, 05:28 PM   #17
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Re: Dana 60 ratois avaliable?

Could it be possible to use an axle from a later 3/4 ton truck or van?
Of course, some fabricating could be neccesary. :-)
What ratios are available on later trucks or vans?
Are the thread widths much different on later models?

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Old 04-18-2006, 07:38 PM   #18
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Re: Dana 60 ratois avaliable?

My dana 60 has 4.56 looking for 3.73 heard thats a good all around ratio for highway and towing
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Old 04-18-2006, 11:21 PM   #19
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Re: Dana 60 ratois avaliable?

I believe 3.54 is the lowest gear ratio available for D60's.

There was a D61 found in some Dodges and Fords, that could go down to 3.07, but its an oddball axle.

Front and rear D60 gearsets interchange (with the exception of Ford "hi-pinion" and the above mentioned D61 gears). The only difference is some of the older gearsets might have a coarse splined pinion gear, so just grab the yoke if you do get used.
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Old 04-19-2006, 02:31 AM   #20
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Re: Dana 60 ratois avaliable?

Does anyone have a list of ratios available on later 8-lug axles?
I have a feeling that later van's have ratios more suitable for highway driving.

But, will the width of a later axle fit the 67-72 trucks?

/Tomme
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Old 04-19-2006, 02:34 AM   #21
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Re: Dana 60 ratois avaliable?

you can go to 3.21 in the 14 bolt.
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Old 04-19-2006, 04:16 AM   #22
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Re: Dana 60 ratois avaliable?

Sorry for being stupid but...is the "14 bolt" a Dana axle, or...
And in wich trucks or vans was the 14 bolt was available?

/Tomme
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Old 04-20-2006, 01:36 PM   #23
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Smile Re: Dana 60 ratois avaliable?

How fast can your trucks go with the BB? I have 402 turbo 400 and dana 60 and my top speed was only 75mph.Is that about the right speed for this set up?Also If any of you have an extra bracket that is bolted to the top of the rear end cover to the rubber brake line on a 3/4 dana 60 rear end ,I'll buy it?Let me know how much? Thank you. Dave
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Old 04-20-2006, 08:27 PM   #24
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Re: Dana 60 ratois avaliable?

Quote:
Originally Posted by Tomme
Sorry for being stupid but...is the "14 bolt" a Dana axle, or...
And in wich trucks or vans was the 14 bolt was available?

/Tomme
The 14 bolt is a corporate axle that was used under gm 3/4 and 1 ton trucks and vans from 73 on up til recently. it should be pretty common, even in sweden.
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