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1961 - 1966 F-100 & Larger F-Series Trucks Discuss the Slick Sixties Ford Truck

9 inch upgrade

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Old May 20, 2010 | 01:15 AM
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Haaser
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9 inch upgrade

Question for ya guys. I have a 65 M-100 that I have rebuilt and hopped up. It has the original 9 inch in it and now is starting to act up. It has quite a bit of play and I would like to convert it to posi. It currently has 3.73 gears which I like but what causes the rear end to howl and be loose. These rear ends are 28 spline correct? If I put an auburn limited slip or similar with that be comparable to a limited slip center section. What all is involved in rebuild a rear end and approx cost? I have never really torn into a rear end but not afraid to do so. I realize that you need to set gear lash and ect but that does not really scare me. Thanks
 
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