CK5
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44 and 44HD?
- Thread starter big94gmc
- Start date
habitatxskate
1/2 ton status
its like an hp60 in a d44 version, not sure on the details, but yeah a hd44 exists.
deadlew
1/2 ton status
The differences I have run across between the 1/2T and 3/4T is the axle tube thickness 3/8" and 1/2" and the extra ribbing on the diff itself along with extra material in the casting.
PaulC
PaulC
a 3/4 d44 is the same as a half ton just with 8 lug otters...at least chevy is
habitatxskate
1/2 ton status
yuor right 2slo..but he is asking the difference between a d44 and the "hd" version of it..
I thought the hd was the 3/4 ton and non hd was the 1/2 ton 
The simple answer is tube thickness.
Between a 3/4 ton D44 & D44HD things like bearings, r&p, axles, rotors, etc are all the same. The differences are strictly in the housing itself.
Between a 3/4 ton D44 & D44HD things like bearings, r&p, axles, rotors, etc are all the same. The differences are strictly in the housing itself.
Stomis
Professional Amateur
Lets not confuse HD = Heavy Duty
and HP = High pinion...
and HP = High pinion...
The hd's were 'early model' from '71 to i think 74 or 5. They had 6 long allen bolts that hold the locking hub on. [That is the easiest way to tell] The axles tubes are 5/8 inch thick, they also took a larger inner wheel bearing. The spindles are different than the others in relation to the seal surface v. inner bearing offset. The hubs themselves were also different because of the inner bearing.
