I would like to find a rear axle with 3.07's in it, but dont know what year models or type of trucks they were available in. I need to know what to look for at salvage yards and such to know if they may have what I'm looking for.

 

The 89 - early 91 Dodge Cummins trucks [non-intercooled] with the 727 automatic transmissions had them installed from the factory. As mentioned previously and on other forums: It is easily recognized by the additional metal in the housing at the 1 o'clock position of the housing when viewed from the rear looking forward.

 

When the snow melts I will have to check that out. I never knew that.

 

For a while I have seen them not be a hot selling ticket. At one time, you could name your price and get it. Since I blew one up years back and had to spend big money for a used one, I have seen plenty for sale for 1/4 as much as I paid. I passed on one 6 months ago for 175 bucks in my area.

 

hey-Hey!!!,
They seem to be quite variable; I got mine for $100 and it also had the Powr-Lok in it. Needed new bearings, clutches, and hub bearing seal journals...
cheers,
Douglas

 

Do a search at dieselbombers.com, there was a kid over there wanting to sell his last week

 

I have a good used 3.07 ring and pinion with a open carrior form a dana 70 for $50 if you want it

 

Heres the thread of the other site where he says he wants to sell them:

http://www.cumminsforum.com/forum/89...ed-help-3.html

The 3.07's should be a Dana 61 and 71. From Pirate 4x4: Here is info about the Dana 61:

With mileage and emissions concerns rising, at some point Dodge and / or Ford decided they wanted to be able to offer gears higher than the current highest ratio of 3.54 available in the D60. However, because of the design of the D60 the pinion head could not be made big enough to achieve a higher ratio. Hence, the birth of the Dana 61, which has a different casting that moves the pinion over 0.25"-0.437" (conflicting reports) - this allowed for a 3.07 axle ratio. The Dana 61 also uses 3.5" axle tubes. Other than that, it is very similar to the Dana 60. The Dana 61 was common in Dodge front ends and Ford van rears.

The difficulty with the Dana 61 is very limited gear and locker choices. However, you can use a combination of ring gear spacer and thick gear set to allow the use of differentials and gear sets intended for the Dana 60.

Slagburn reports: to run a 4.88 I had to go with series 3 carrier, series 1 being 4.10 and down, series 2 being 4.56 and up, then the series 3. PLUS a .160" spacer. That's the problem, nobody makes a full case locker for a 61, but it could be doable with a thick ring gearset AND a spacer.

http://www1.pirate4x4.com/tech/billa...nt/index2.html