Just cracked open a reverse 44 out of a 79 Ford Bronco. 42 12 are stamped into the gear set, which makes them 350's. Personally, I've never heard of this ratio and I was wondering if it's common? I was also wondering if 354 gears from a 80 wagoneer would fit in this reverse rotation axle?

NuTzAnBoLtZ

Originally posted by NuTzAnBoLtZ
I was also wondering if 354 gears from a 80 wagoneer would fit in this reverse rotation axle?

NuTzAnBoLtZ

Nope..RC gears are different

Is there something I'm missing here?? Will 350's work with 354's, The ring gear shows 42 12 so the ratio comes to 3.50's The ring gear on my matching Rear 44 is showing 46 13 which comes to a ratio of 354 correct ???

I can't find anywhere on any Bill of material thats shows this gear coming with any dana 44 for this year.....all it shows is 354's and 409's




NuTzAnBoLtZ:rasta:

any gear guru's out there ??

Sorry..yes 3.5 and 3.54 are acceptably close. I used to run 4.09's and 4.11's

well,,,,,reverse rotation pinions enter the housing above the centerline of the axle shafts. standard rotation enter below. you cant use the gears out of one and put in another. do you know for a fact that these are the orignal gears? but the ratio is close enough to run together. 3.50s and 3.55s should be compatable.

Originally posted by 4x4man
well,,,,,reverse rotation pinions enter the housing above the centerline of the axle shafts. standard rotation enter below. you cant use the gears out of one and put in another. do you know for a fact that these are the orignal gears? but the ratio is close enough to run together. 3.50s and 3.55s should be compatable.


What's up Kelly..Haven't seen you around in a while. How's everything going?

Per http://www2.dana.com/expert/

You should be with in 1%. So 4.11 to 4.09 is just at the edge. Your 3.50 and 3.54 is very close, I'd say it's OK, just don't run it on dry pavement in 4 wheel drive.

Can't find it tonight, but I've a list of every Reverse Spiral gear set Dana released.

not much man,,,,,,,,check your post on the cage buildup

3.50 is pretty common for bronco's. especially 78-79 bronco d44's. some EB bronco's came with 3.54 front, 3.5 rear so you should be allright.

I have a few of thoes here in my axle pile. The reverse cut fronts being Dana are 3.54 compatible, and my buddies at Randy Ring and Pinion say that Dana never made a 3.50 per say its just different people call their gears different things. He said he has seen 3.55, 3.50, 3.54...etc you get the idea. Its all in the rounding up or down so to speak.

Being a wholeseller of their products gives me the advantage of being able to call and gleen much knowledge from them when i want. Nice hun:D

BTW any body need any of them housings? I need to finance this NP-205 case I am after.

Fleckster

You might want to count the teeth and make sure they match the numbers.

42/12 would not be a good hunting tooth ratio, as the ring gear teeth would contact the same two pinion teeth and no others. If you ever pull the carrier to replace diff, etc. make sure you mark the gears so that you get the same teeth mating again. If you don't you could have noise/vibration, durability issues.

3.55 vs. 3.54 is not a matter of rounding. 3.55 uses 39/11 teeth, and 3.54 uses 46/13.

Thanks again for all the posts, it's alot of info that will help.. I still have one more question, did the ford bronco that ran the 350 front and the 354 rear have a transfer case that compsenated for the difference in gear ratio or are these really compatible.. I just finished rebuilding my Dana 300 and would really be pissed if I blew it up.. And if I finished a twelve before I did it.. :D :D

Anymore help would appreciated.. Thanks guys..:beer:

Nope they ran them that way...Remember, your tire pressure alone could affect your gearing...Just run it!

Right on thanks bud.. Looks like I'm gonna have a rear reverse rotation after all.. And I guess if it doesn't work then :nuke: !!


Oh well I guess this is just "The Jeep of our lives":flipoff2:

thanks buddy.. Cheers:beer:

If your going to stick around...start referring to your axle as a Reverse Cut rather than a Reverse Rotation...the PBB idiots will eat you alive and try to correct you on this little technicality.;)

Originally posted by Scout Dude
If your going to stick around...start referring to your axle as a Reverse Cut rather than a Reverse Rotation...the PBB idiots will eat you alive and try to correct you on this little technicality.;)
Yes, Reverse Cut is more accurate than reverse rotation, but... if "they" correct you with this Reverse Cut talk just point out that Reverse Cut is Wrong. It's Reverse Spiral Gear set per the company that invented them!

Hey The Fleckster, see if your friends know when the first Dana RS44 was released.

Originally posted by The Fleckster
my buddies at Randy Ring and Pinion say that Dana never made a 3.50 per say its just different people call their gears different things. He said he has seen 3.55, 3.50, 3.54...etc you get the idea. Its all in the rounding up or down so to speak. Your buddy at Randy Ring and Pinion is WRONG! Not sure I'd want to use them if they missed this one.

I've included the part numbers, so you can look it up and see for yourself!
Per Dana:
Dana model 216 (Dana 44) Reverse Spiral Gear Set
Ratio Gear Set P/N
3.00 660002
3.07 71762 x
3.31 74251 x 10/13/92
3.50 28769 x
3.54 24638 x
4.09 24649 x

Okay, it was 12:11 am. I must have been fawkin tired. Your math is right, I was :zzz: up and tired.

I have a rear old High pinion reverse cut that has drum brakes from a way older ford. Like possibley 60s. I will ask Dave tommorow.

Fleckster

The Fleckster,

Could take a pic of the axle?

Then most important take a picture of the date code? It'll be on the long tube, should be facing the front in the center. Maybe be on the web, but I've never seen it there before 72.