Dana 80
Encyclopedia
The Dana/Spicer Model 80 is an automotive axle manufactured by Dana Corp.
and has been used in OEM heavy duty applications by Chevrolet
, Dodge
, and Ford. It can be identified by its straight axle tubes, 10 bolt asymmetrical cover, and a "80" cast in to the housing. Dana 80's are made as full floating, rear axles only and are step up in overall strength compared to the Dana 70
. 1988 Ford was the first company to use the Dana 80. The Dana 80 has a GAWR
up to 11,000 lbs, however it is common practice among manufacturers to derate Dana 80's. Gross axle weight ratings are lowered by the vehicle manufacturer for safety and tire reasons. The OEM Limited slip differential
originally was a "Power Lok" until 1998 when the "Trac Lok" phased it out. Trac Loks are currently a $350.00 USD option with Ford Super Duty
trucks. The Dana 80 Trac Lok is unique being it is a 4 pinion unit, unlike other Dana Trac Lok units with 2 pinions. This was the only rear axle available for the 2nd generation Dodge Ram 3500 trucks.
trucks have been common users of the Dana 80 since it was first manufactured in 1988. Dodge used the axle selectively in class 2 trucks from 1994-2002. Ford has made use of the axle in class 4 trucks until 2005 when the Dana S 110
was phased in.
Ford
Chevrolet
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Dana Corp.
The Dana Holding Corporation is a supplier of axles, driveshafts, off-highway transmissions, sealing and thermal-management products, and service parts....
and has been used in OEM heavy duty applications by Chevrolet
Chevrolet
Chevrolet , also known as Chevy , is a brand of vehicle produced by General Motors Company . Founded by Louis Chevrolet and ousted GM founder William C. Durant on November 3, 1911, General Motors acquired Chevrolet in 1918...
, Dodge
Dodge
Dodge is a United States-based brand of automobiles, minivans, and sport utility vehicles, manufactured and marketed by Chrysler Group LLC in more than 60 different countries and territories worldwide....
, and Ford. It can be identified by its straight axle tubes, 10 bolt asymmetrical cover, and a "80" cast in to the housing. Dana 80's are made as full floating, rear axles only and are step up in overall strength compared to the Dana 70
Dana 70
The Dana/Spicer Model 70 is an automotive axle manufactured by Dana Corp. and has been used in OEM heavy duty applications by Chevrolet, Dodge, and Ford. It can be identified by its straight axle tubes, 10 bolt asymmetrical cover, and a "70" cast in to the housing and is visually similar to the...
. 1988 Ford was the first company to use the Dana 80. The Dana 80 has a GAWR
Gross axle weight rating
The gross axle weight rating is the maximum distributed weight that may be supported by an axle of a road vehicle. Typically, GAWR is followed by either the letters FR or RR, which indicate front or rear axles respectively.-Importance:...
up to 11,000 lbs, however it is common practice among manufacturers to derate Dana 80's. Gross axle weight ratings are lowered by the vehicle manufacturer for safety and tire reasons. The OEM Limited slip differential
Limited slip differential
A limited slip differential is a type of differential gear arrangement that allows for some difference in angular velocity of the output shafts, but imposes a mechanical bound on the disparity...
originally was a "Power Lok" until 1998 when the "Trac Lok" phased it out. Trac Loks are currently a $350.00 USD option with Ford Super Duty
Ford Super Duty
For the 1999 model year, Ford shifted the F-250 and F-350 truck lines to a design mechanically and cosmetically distinct from that of the F-150. The F-350 was not available for 1998, while the F-250 was available that year with the F-150's body...
trucks. The Dana 80 Trac Lok is unique being it is a 4 pinion unit, unlike other Dana Trac Lok units with 2 pinions. This was the only rear axle available for the 2nd generation Dodge Ram 3500 trucks.
General Specifications
- Ring gear measures 11.25".
- 4" diameter axle tube.
- Inner axle shaft spline counts are 35 and 37.
- Pinion shaft diameter: 2.0"
- Pinion shaft splines: 37
- Axle Shaft diameter
- 35 Spline: 1.50"
- 37 Spline: 1.58"
- Gear ratios: 3.23,3.31, 3.54, 3.73, 4.10, 4.30, 4.63, 4.88, & 5.13
- Brakes measure 13.39" for 2011 F-350 DRW trucks.
- Brakes measure 15.35" for 2011 F-450 trucks (13,050 GVW).
Usage
Class 3Truck classification
In the United States, commercial truck classification is determined based on the vehicle's gross vehicle weight rating . The classes range from 1-8...
trucks have been common users of the Dana 80 since it was first manufactured in 1988. Dodge used the axle selectively in class 2 trucks from 1994-2002. Ford has made use of the axle in class 4 trucks until 2005 when the Dana S 110
Dana S 110
The Dana/Spicer Model S110 is an automotive axle manufactured by the Dana Corp. and the Eaton Corporation. Eaton manufacturers the carrier and Dana manufacturers the rest of the axle. The S110 model follows a newer nomenclature for Dana axles. The "S" meaning: single rear axle...
was phased in.
Common Applications
Dodge- 1994-2002 3500
- 1994-2002 2500 equipped with manual transmissions and Diesel or V10 engines
Ford
- 1988-1998 F-350 DRW (Chassis cabs and some pick ups)
- 1999-2011 F-350 DRW
- 1988-2004 F-450
- 2011-2012 F-450 (13,050 GVW)
Chevrolet
- Various heavy duty commercial applications
External links
- http://dodgeram.org/tech/specs/axle/286RBI_specs.html
- http://www.ringpinion.com/DiffDetails.aspx?DiffID=23&PartsLink=PartCats.aspx%3fSearchMode%3dDiff%26TypeID%3d3%26DiffID%3d23
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