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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 [[axle#Full-floating vs semi-floating|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 [[Gross axle weight rating|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. A four pinion "Power lok" clutch type limited slip was a common factory option, but clutches were stacked for road manners rather than maximum traction. Another option is the weaker two spider "Trac Loc". Neither is an actual locking differential. 98-02 models may have a "floating pin" four pinion Trac Loc which has round cross pin ends. The earlier Power loc has two 90 degree flats to engage a preload "V" ramp in the carrier.
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 [[axle#Full-floating vs semi-floating|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 [[Gross axle weight rating|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.<ref> http://bp3.ford.com/2011-Ford-F-350/Models?useCookieZip=true#/Models/</ref> 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 [[Dodge Ram#1994–2002 (BR/BE)| 2nd generation]] Dodge Ram 3500 trucks.




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** 35 Spline: 1.50"
** 35 Spline: 1.50"
** 37 Spline: 1.58"
** 37 Spline: 1.58"
* Gear ratios: 3.23, 3.31, 3.54, 3.73, (Carrier break) 4.10, 4.11, 4.30, 4.63, 4.88, 5.13, & 5.38
* Gear ratios: 3.23, 3.31, 3.54, 3.73, 4.10, 4.11, 4.30, 4.63, 4.88, 5.13, & 5.38
* Brakes measure 13.39" for 2011 F-350 DRW trucks.
* Brakes measure 13.39" for 2011 F-350 DRW trucks.
* Brakes measure 15.35" for 2011 F-450 trucks (13,050 GVW).
* Brakes measure 15.35" for 2011 F-450 trucks (13,050 GVW).

Revision as of 16:51, 16 January 2013

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.[1] 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.


35 Spline Dana 80 in a 2002 Dodge 2500HD Diesel

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, 4.11, 4.30, 4.63, 4.88, 5.13, & 5.38
  • Brakes measure 13.39" for 2011 F-350 DRW trucks.
  • Brakes measure 15.35" for 2011 F-450 trucks (13,050 GVW).

Usage

Class 3 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.

Common Applications[2]

Dodge

Ford

  • 1988-1998 F-350 DRW (Select chassis cabs and pick ups)
  • 1999-2011 F-350 DRW
  • 1988-2004 F-450
  • 2011-2012 F-450 (13,050 GVW)

Chevrolet

  • Various heavy duty commercial applications

References

  1. ^ http://bp3.ford.com/2011-Ford-F-350/Models?useCookieZip=true#/Models/
  2. ^ Incomplete list. Common applications only.
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