Go Back   The Ford Barn > General Discussion > Late V8 (1954+)

Sponsored Links (Register now to hide all advertisements)

Reply
 
Thread Tools Display Modes
Old 04-17-2020, 05:23 PM   #1
xelhan
Member
 
Join Date: Aug 2016
Location: Avesta, Sweden
Posts: 69
Default Dana 44 2.72:1 ring & pinion

Hello,
I'm trying to find a 2.72:1 ratio ring & pinion for a DANA 44 axle - new or good used
Any help would be appreciated
Shipping to California - not Sweden
Regards,
Chris
Attached Images
File Type: jpg YGD44411.jpg (143.8 KB, 2 views)

Last edited by xelhan; 04-20-2020 at 01:19 AM.
xelhan is offline   Reply With Quote
Old 04-17-2020, 05:28 PM   #2
scicala
Senior Member
 
scicala's Avatar
 
Join Date: Jun 2010
Location: Detroit suburb, MI
Posts: 2,838
Default Re: Dana 44 2.72:1 ring & pinion

Hello, you can try this place in Warren, Michigan. They should have or be able to get whatever you want. Is there really a Dana 44 gear set with that low of a number (2.72:1) ?


Sal


https://www.drivetrainspecialists.com/
scicala is offline   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 04-18-2020, 03:05 AM   #3
xelhan
Member
 
Join Date: Aug 2016
Location: Avesta, Sweden
Posts: 69
Default Re: Dana 44 2.72:1 ring & pinion

Thanks Sal,

Yes, 2.72:1 was the highest gearing (low number) from DANA.
Drivetrain Spec.had nothing on their site, but I have sent an email just in case.

Chris
xelhan is offline   Reply With Quote
Old 04-18-2020, 09:28 AM   #4
scicala
Senior Member
 
scicala's Avatar
 
Join Date: Jun 2010
Location: Detroit suburb, MI
Posts: 2,838
Default Re: Dana 44 2.72:1 ring & pinion

The highest I saw on the website was 3.07:1. I assume your trying to get a high top speed.
scicala is offline   Reply With Quote
Old 04-18-2020, 10:13 AM   #5
rotorwrench
Senior Member
 
rotorwrench's Avatar
 
Join Date: Jun 2010
Location: San Antonio, Texas
Posts: 11,555
Default Re: Dana 44 2.72:1 ring & pinion

Ford didn't use any that tall in the years that they used the Dana 44. It may have been for the independent suspension versions of the Dana 44 used on Corvettes or Jaguar cars. Gear ratios this tall are generally used on automatic overdrive applications.

What is the application that it's needed for?

Randy's Worldwide has a lot of stuff for the Dana 44 but I don't know about a set of gears that tall. It sounds more like Dana 36.
rotorwrench is offline   Reply With Quote
Old 04-18-2020, 11:32 AM   #6
xelhan
Member
 
Join Date: Aug 2016
Location: Avesta, Sweden
Posts: 69
Default Re: Dana 44 2.72:1 ring & pinion

Picture of my axle housing.

This is from Wikipedia:


General specifications
Ring gear measures 8.5 in (216 mm)
Ring gear measures 8.9 in (226 mm)
OEM Inner axle shaft spline counts are 10, 19, 29, 30, 32, 33 and 35
Pinion shaft diameter: 1.375" (most Dana 44s) 1.625" (JK rear 8.9" Dana 44s)
Pinion shaft splines and spline diameter: 26/1.12" (most Dana 44s post 1970), 24/1.25" (JK), 10/1.12" (early pre-1970 Dana 44s)
Gear ratios range from 2.72:1 to 5.89:1
Carrier break: 2.72:1 3.73:1 and 3.92 5.89:1. 6.17:1 (Volvo C202)
Attached Images
File Type: jpg Jag diff case bolt nose.2.jpg (29.4 KB, 5 views)
xelhan is offline   Reply With Quote
Old 04-18-2020, 03:50 PM   #7
rotorwrench
Senior Member
 
rotorwrench's Avatar
 
Join Date: Jun 2010
Location: San Antonio, Texas
Posts: 11,555
Default Re: Dana 44 2.72:1 ring & pinion

That is an independent Dana 44. They are heavier duty than the Dana 36 that replaced it. A lot of folks look for Dana 44 set ups to do a conversion.

I go to Randys WW (used to be Randy's Ring & Pinion) and specifically look for Dana axle information. It lists each type of axle from Dana/Spicer. They even have stuff for the old 19-spline axle set ups listed. If you look for the Corvette axle listing it will show what's available. The Dana 36 Corvette axle will show what it has. Someone may have confused Dana 44 & 36 in the Corvette series axles as to the available R&P ratios. Not all Wiki stuff is gospel. It's made up of stuff folks add in and mistakes can happen.

Here's a link: https://www.randysworldwide.com/diff...dentification/
rotorwrench is offline   Reply With Quote
Old 04-18-2020, 09:14 PM   #8
Daves55Sedan
Senior Member
 
Daves55Sedan's Avatar
 
Join Date: May 2010
Location: Granite City, Illinois
Posts: 1,994
Default Re: Dana 44 2.72:1 ring & pinion

Decades ago, I had a '57 Custom 300 with 292 Y-block and the standard 9" banjo housing rear axle. The factory gear ratio in that thing was 4.76:1. You could have the engine redlined on the highway and struggle to achieve 60mph. I hated it so much I went to a junkyard and found a '58 Fairlane 500 that had the factory 2.91:1 rear end ratio. I plucked that pumpkin in a New York second and popped it into my car. Boy did she ever fly after that !!!

Last edited by Daves55Sedan; 04-19-2020 at 10:39 PM.
Daves55Sedan is offline   Reply With Quote
Old 04-19-2020, 02:45 AM   #9
xelhan
Member
 
Join Date: Aug 2016
Location: Avesta, Sweden
Posts: 69
Default Re: Dana 44 2.72:1 ring & pinion

Thanks rotorwrench,

I mailed Randy's some days ago but haven't heard back. They don't show the 2.72:1 ratio, but maybe they know who might carry them.

This company offer rebuilt Corvette rear end:

https://www.corvettedepot.ca/driveli...ew-ring-pinion

but are not able to sell the ring & pinion only - strange.

Chris
xelhan is offline   Reply With Quote
Old 04-20-2020, 03:12 PM   #10
rotorwrench
Senior Member
 
rotorwrench's Avatar
 
Join Date: Jun 2010
Location: San Antonio, Texas
Posts: 11,555
Default Re: Dana 44 2.72:1 ring & pinion

I found this for Nitro 272 gears. http://justdifferentials.ru/D44-272-NG-p/d44-272-ng.htm

This must be a sort of odd ratio for these units. I never say never when looking at all this stuff unless I have some sort of inside information and I don't. I hope your friend has a carrier that will fit the base circle of the ring. This application would have to have some low 1st gear ratio to get started out and 4 or more speeds forward.

I had a 95 Buick Roadblaster with a ratio like this but it had the LT1 engine and a transmission that would definitely pull it. It had an automatic overdrive set up 4L60E.

Last edited by rotorwrench; 04-20-2020 at 04:05 PM. Reason: correction
rotorwrench is offline   Reply With Quote
Old 04-23-2020, 07:13 AM   #11
xelhan
Member
 
Join Date: Aug 2016
Location: Avesta, Sweden
Posts: 69
Default Re: Dana 44 2.72:1 ring & pinion

rotorwrench! That web site is not in service and the new site: https://www.justdifferentials.com/category-s/3484.htm only show 3.08 as the highest ratio. I have mailed them and asked if 2.72 is available after all, but no answer as of yet.

Many thanks

xelhan is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Sponsored Links (Register now to hide all advertisements)


All times are GMT -5. The time now is 09:54 PM.