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Old July 13th, 2007, 11:56 PM   #1
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Default D44 Carrier differences

whats the story on these axles are they any good other then haveing drum brakes......just curious saw one at the local yard today for $90, its in a 71 F250.......



can someone explain the thick ring gear option on D44s

is the TTB carriers the same in the D44's (77 f150 d44 vs TTB D44's)


See Post #17

Last edited by CheapThrillB2; August 3rd, 2007 at 05:05 PM.
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Old July 14th, 2007, 09:02 AM   #2
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Originally Posted by CheapThrillB2 View Post
whats the story on these axles are they any good other then haveing drum brakes......just curious saw one at the local yard today for $90, its in a 71 F250.......



can someone explain the thick ring gear option on D44s

is the TTB carriers the same in the D44's (77 f150 d44 vs TTB D44's)
I'd say stay away. Being closed knuckle I believe it is pre-1971 (probably a 1970). It has the 260 series u-joints (smaller). And you'd have to do the whole disc conversion (well, you wouldn't *have* to, but drum fronts suck).

You should be able to find a good open knuckle D44 for around the same price.

The thick ring gear allows you to use a differential designed for 3.73 and numerically lower gears (3.54, 3.42, etc). It is thicker so that the ring gear teeth are closer to the pinion (as opposed to using a regular gear and a different differential that moves the entire ring gear closer to the pinion).

The TTB D44 and solid axle D44 carriers are the same. The gears might not be (TTB are high pinion, not all solid axles are).
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Old July 14th, 2007, 09:24 AM   #3
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i already have a HP 44 from an f150, i just saw that one at the yard and was curious....

The one i have is geared to 3.54 right now, so then i could just get a think ring gear set (4.88) vs having to buy another carrier and getting std 4.88's
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Old July 14th, 2007, 10:36 AM   #4
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so then i could just get a think ring gear set (4.88) vs having to buy another carrier and getting std 4.88's
yup
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Old July 18th, 2007, 08:43 AM   #5
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i can't seem to find a thick set for the frt, not make them???

and to calrify before i go and pull a carrier the TTB D44 carriers fit in the SAS HP D44 from a 77 f150
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Old July 18th, 2007, 08:53 AM   #6
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are the rear D44 carriers the same as the frts.............just trying to get my ducks in a row before going out into the yards hunting
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Old July 18th, 2007, 08:56 AM   #7
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i can't seem to find a thick set for the frt, not make them???

and to calrify before i go and pull a carrier the TTB D44 carriers fit in the SAS HP D44 from a 77 f150
They don't make thick gears for HP D44 axles (aka "reverse rotation" or "reverse cut").

The Dana 44 carrier is the same for HP and LP axles so you can swap the carrier but it will have to be 3.92+ to support the 4.88 gears.
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Old July 18th, 2007, 09:32 AM   #8
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That 71 should have 260's. If its a D44HD, it'll have 586's. I believe its LP, also. Ford was still using LP fronts in the bigger trucks into 1976.

Refer here for details on HPD44 model years and features:

http://77cj.littlekeylime.com/web_rs44.html

The first two links pretty much lay it all out for you.

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Old July 18th, 2007, 10:08 AM   #9
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that link is were the pic came from, i just don't see to many around was curious if it was worth anything
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Old July 18th, 2007, 10:50 AM   #10
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I see that now, but the picture you posted is not the 1971 you were talking about. Your pic is the 1976. This is the 1971 D44HD:





Does the one you saw in the yard have the larger kingpins that the 71 has?
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Old July 18th, 2007, 11:02 AM   #11
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i didn't look that close, just saw the closed knuckle, the axle in a 71 F250 camper special, its the same one that has the np205 divorced that i mentioned in the other thread

i can tell ya its got one of the weirdest gear box/pitman arm set-up i've seen
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Old July 23rd, 2007, 08:04 PM   #12
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okay another one

what is the easiest way to tell the difference between the carriers when the gears are not on them.........everywhere i read about the thick gears says to drill the carrier for larger ring gear bolts (drill to 7/16) so then is the 3.90+ carriers have 7/16 holes and the 3.73- smaller?
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Old July 23rd, 2007, 11:11 PM   #13
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The only difference I noticed between my series 3 and series 4 carriers was the position of the Ring gear "deck" I'll call it. It's slightly closer to the centerline of the differential. Without them sitting next to each other, I do not think I would have noticed the difference. I do not believe the bolt hole diameter was different either.
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Old July 24th, 2007, 09:31 AM   #14
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Buddy of mine has a 68 F250 with that same closed knuckle configuration...also has a divorced dana 24 t-case and T18...
I think turning is shit with the closed knuckle and parts have got to be a PITA to get for it....
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Old July 24th, 2007, 11:59 AM   #15
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mine is a 72 F-250
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Old July 24th, 2007, 12:36 PM   #16
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mine is a 72 F-250
whatever the fukc it is, its got some whacked out shit that isnt used anymore
haha
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Old August 3rd, 2007, 05:07 PM   #17
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okay i bought a carrier that is suppose to be 3.90+ but i compare it to my carrier that had 3.54 gears on it and i cannot tell the difference between the two..........what are the distinctive differences between the two carriers????
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Old August 3rd, 2007, 05:21 PM   #18
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Im not entirely positive where the cut off is for the ratios but the difference is the distance between the ring gear flange and where it is in relation to the bearings that center it. its something like .100"

that is just rough numbers from my hazy memory, im almost positive that they are incorrect.

place both carriers next to each other with the ring gear teeth up and look at the height between the mounting surfaces....
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Old August 3rd, 2007, 05:26 PM   #19
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I have found Reider Racing tech line (734-946-1330) to be the answer people in these situations. Nice, intellegent, people on all things drive axle.

Randys Ring and Pinion also may give you good info. 1-800-347-1188 open mon thru fri 5am to 5:30pm Pacific time.
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Old August 3rd, 2007, 05:32 PM   #20
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Quote:
Originally Posted by sodapop View Post
The only difference I noticed between my series 3 and series 4 carriers was the position of the Ring gear "deck" I'll call it. It's slightly closer to the centerline of the differential. Without them sitting next to each other, I do not think I would have noticed the difference.
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place both carriers next to each other with the ring gear teeth up and look at the height between the mounting surfaces....

Its 3.73-down and 3.92-up, just like it says in the first sticky\\\\\\\\\\'d thread in this forum.
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