word is that an Auburn 8.5" may drop in:
http://www.v8buick.com/showthread.ph...41#post1072341
"So with more digging through boxes of parts, I found a set of Auburn preload plates and springs for an Auburn posi 8.5" corporate GM application. Turns out the Auburn setup is a an exact drop in. Even the crossshaft was identical. In fact, I used the Auburn cross shaft. So maybe there is an actual use for the Auburn design, the rest of which I do not like. The cross shaft hole dia.(as mentioned above) and spring compression are perfect, as if designed for the 9 3/8" posi. The Auburns, with their cone type clutches, use lots of preload, so it was real fun to install. But I got it in and not even 600 ft lbs. of axle torque will make it slip. May need to find some lighter springs, but these are the plates to use."
Last edited by bob k. mando; 08-15-2015 at 03:06 PM.
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Originally Posted by bob k. mando
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