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Okay, I have been searching for a 9" for my 66. i have hwat i have been told is a great price. However, there are tons of junk yards around me and i know that if take a few hours and look i can find what i need.
1 How do i tell if a rear end is a trac-loc?
2 What vehicles do i look for to harvest?
3 What is the best way to tell if they are goood or worn out?
4 Is the gear ratio stamped on the rear end tag?
5 How do i tell if it is a 28 or 31 spline?
There are more U Pull It places around me then there are conventional recyclers. I know they ask a premium but if i stick with the upullits they will be cheaper. And all i will need is a cordless sawz all.
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there are two many tags to decypher unless you know exactly what you're looking for. If the rear is off the ground, turn the wheel, and the other should turn in the same direction. Non will turn in the opposite direction. F series trucks frequently came with trac loc and larger axles, but you would have to pull the center section or an axle to determine that.
groho told you how to determine if it is limited slip or open.
As far as 31 or 28, I am not sure if this always holds true, but it seems that the trucks I've seen with 31's have Timken bearing axles and the 28's have sealed ball bearing axles.
Hope this helps.
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Doc
ASE Master
If you are looking for a donor, get a 9". It is far superior and parts are more readily available due to the racing industry. It is the gold standard for rearends. 8.8s are not bad, just not as good, IMO.
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Can someone list how to spot a trac-loc
