dana 44 out of 86 cj7

[bearsden]

The 49 & 18 on the ring gear are referring to the correct match for that gear set...........49 ring /18 pinion=2.72 ratio.........so the ratio in the 44's were as marked 2.72 to 1.

You either have a choice of re-gearing the 44's to 3.73 to match your front axle or do them both to get an overall better ratio.....as I mentioned before the 3.73 in 4th gear on a 700r4 OD will be like having a (3.73 x70% =) 2.61 final gear.......which is way to tall / slow of a gear for most motor's............ The good news is in 3rd gear it is still 1/1 so that ratio would be 3.73 /1. So if you don't mind running that Transmission like a 3 speed that combo is still possible..........
Normally when a Jeep goes to 33 inch tires from the factory 30-31"s a gear change to 4.11 or lower is needed just to get your motor RPM back to normal.

If you would like some added performance not in Horsepower but mechanically "Off and on Road" via a gear ratio change now is the time to think that out..........as the 700R4 is a great Transmission to help your vehicle feel more snappy at low speeds from 1st through 3rd gear and then into 4th with the 30% OD..............Right now for you to get near back to 3.73 as a final drive ratio when in 4th gear at 30% Overdrive the axle ratio would now need to be 5.38's.
Do the math and make a decision based on how you will use the vehicle and where it will spend most of it's speed & Rpm.

obviously this is all new to me and I'm understanding what your saying.I think I'm going to make sure everything is right with the tranny first,once I have that right i will see how it runs with the 3.73 i have in there now.Because I totally get what your saying,if i'm going to change Im going to do it now...you already got me thinking 4.11 and of course the $$$$.I got to think kinda long term unfotrunately.Thanks and i'll keep you posted !!

 

[bearsden]

That would be a 2.72 gears the next number the gear set number (374), both the ring and the pinion gears should have the same number. The ring gear will be stamped and the pinion gear will be scratch engraved.

definately 2.72 after opening it up and counting as T99 said ...decision time!! Thanks Hedgehog!

 

[velocity280]

Yes, do it. I have the Dana 30 and 44 as well, and mine bolted up

 

[jquise2423]

I have a set if 3.73' s 3.54's and a Limited slip for sale

 

[Peanut Butter]

I have a set if 3.73' s 3.54's and a Limited slip for sale

Peter said earlier he didn't know if the carrier for the 3.54 was large or small. Can you answer this? I have 3.54 in mine and have no clue what a large carrier looks like compared to a small carrier. Might be good information to know for the future. Mind my asking how much your asking? Rod

 

[jquise2423]

Carrier break for the Dana 44 is at 3.73 and numerically lower gears or 3.92 and numerically higher.

Differential Carrier Breaks | West Coast Differentials

Used Dana 44 3.73 ring and pinion
Dana part numbers
Ring gear 18515
Pinion gear 32072
$100.00 OBO

Dana 44 TrakLok Limited slip differential
$300.00 OBO
3.73 and down

Dana 44 3.54 ring and pinion
Dana part numbers
Ring gear 18437
Pinion gear 32171
$100.00 OBO

I also have a Dana 44 open carrier 3.73 and down.

Everything is located in Sahuarita, AZ

 

[Peanut Butter]

Carrier break for the Dana 44 is at 3.73 and numerically lower gears or 3.92 and numerically higher.

Differential Carrier Breaks | West Coast

Good link thanks. The link didn't show the AMC 20, do you know what it is? :driving: Rod

PS: Be sure to fill out your profile, it helps the rest of us know what you are talking about in any of your posts.

 

[Posi]

The 20 break is at 2.73

 

[jquise2423]

I also have a narrow track Dana 44 I'm trying to sell.

Dana 44