1974 Omega
February 8th, 2009, 07:38 PM
#1
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1974 Omega
Hello Everyone. Since I have to hit the 5 post mark before I can actually get in to the real threads....I'll start here. I have a 1974 Omega that I recently purchased. It has a Chevy 350 (I know, I know) and a built TH350 trans. One of the first things that I would like to do is change the open rear end to a posi. Any thoughts or ideas on the easiest way to do this? If I can get away with it, i would prefer to not have to seek out a whole new rear end. The rear end is a 10 bolt (found by counting the bolts
). Does anyone know if I could buy an Eaton or other brand differential unit? Thanks in advance for the help!
). Does anyone know if I could buy an Eaton or other brand differential unit? Thanks in advance for the help!
February 8th, 2009, 08:35 PM
#2
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Hi!
The wiki says:
and
So I guess the Eaton one would work? I don't know for sure. 
The wiki says:
You can change a single track car to posi by putting in a positraction differential. In other words you can put a posi unit in a 10 or 12 bolt, as long as you have the right posi unit.
To upgrade an open differential to a posi, you must change the carrier to a posi type. That is, just the "guts" inside the rear end. You can even keep your existing gear set. A new or rebuilt unit should be about the same in durability. If you have a regular "C" type rear end then parts for this are very easy to find. However, if you have a "O" type rear end used in 1967 to 1970 models then a posi carrier is very difficult to find. Best bet is to get a rear end specialist to do the work.
February 10th, 2009, 04:28 AM
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