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Old 03-29-2010, 09:40 PM
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Eaton Posi questions on application

Ok, I have a 10 bolt original rear end in a 69 camaro. It had like 2.73 gears in it before I upgraded to 4:10 gears a few years ago. If I remember right I had to change the carrier for the 10 bolt to support the 4:10 gears???

now I am trying to find the correct eaton posi unit but I think I want to drop down to a 3.73 gear instead of the 4:10. couple questions for you pros out there:

1) Will the Eaton work well for me before I spend the money?
2) What brand 3.73 gears do you suggest putting in?
3) With the 3.73 gears will I need another carrier for the eaton Posi or will the one I have work
4) Finally what eaton posi unit do I need for this application? I have been looking in summit Racing, but cant figure out which one is correct for me.

Sorry for the ignorance,but I am really new to all this set up stuff.

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Old 03-29-2010, 10:04 PM
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The 8.2 10 bolt only has a 2 and 3 series, so your 4.11 gears are on a 3 series. The 2.73 would have been on a 2 series. The 3 series is good for all gears from 3.08 to 5.13 gears. I believe that the Eaton Posi is the best street/strip differential for most GM muscle cars. I've been installing Yukon gears for several years now and they have worked well. I also like the Yukon installation kits better than most others. The shim are better and the bearings are Timken.
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