9 inch third member ?
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New User
Joined: Jan 2007
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From: Grand Terrace,Ca
9 inch third member ?
I am rebuilding the third member in my 9 inch,its my first time and Im not sure how thick of a shim to use. It had 3.00 gear in it I am switching to 3.89 gears with a detroit tru-track.The old gears do not have any markings on them what should I do? I have been reading the third member rebuild section but alittle confused any help would be appriciated.
Post Fiend
Joined: Mar 2002
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From: Bonita Springs FL
There's no answer to your question - each carrier and set of gears is different. That's why backlash, pinion depth, and everything else needs to be precisely measured with the right tools. This is also why most people take their gears to a pro to be set up.
Ford Parts Specialist
Joined: Nov 2006
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From: Simi Valley, CA
Originally Posted by 6cougar9
ok thanks Ill start a mock up with the one that was origionally in there and go from there by adding or subtracting thickness . I guess this is why they say its time consuming.
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
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From: Simi Valley, CA
If you've never done one before..pay someone to do it...or you it may cost you far more $$$ later.
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New User
Joined: Jan 2007
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From: Grand Terrace,Ca
I understand but im a do it yourselfer
I built the engine myself and converted it to a manual transmission and all the wiring. now im doing the third member.
If not I have a friend that knows how to set them up I can ask him for soome help but he is hard to get ahold of.
I built the engine myself and converted it to a manual transmission and all the wiring. now im doing the third member.
If not I have a friend that knows how to set them up I can ask him for soome help but he is hard to get ahold of.
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Post Fiend
Joined: Mar 2002
Posts: 19,402
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From: Bonita Springs FL
You need some expensive and special tools to set up a rear end. If you don't know how to do it, you will get it wrong, I promise. A rear end that's not set up right will self-destruct quickly. Your ring & pinion will definitely be destroyed, and there will be collateral damage as well.
If you don't know how to do this, and from the questions you're asking you clearly don't, then either get in touch with your friend or pay someone to do it.
If you don't know how to do this, and from the questions you're asking you clearly don't, then either get in touch with your friend or pay someone to do it.
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