3.55 gears - TCCoA Forums
 
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post #1 of 13 (permalink) Old 11-24-2013, 03:47 PM Thread Starter
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Question 3.55 gears

I have 3.55 ring and pinion set, what all will I need to buy, and is there anything else I will need to change or mod? I'm just putting it in the factory 8.8...
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post #2 of 13 (permalink) Old 11-24-2013, 03:52 PM
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A new speedo gear. Which is best will depend on your tire size, but probably a 19 or 20 tooth.

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post #3 of 13 (permalink) Old 11-24-2013, 04:44 PM
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You will also need a new crush sleeve at a minimum, and possibly a shim set. The factory shims will probably work, but you won't know until you put it together and check the backlash. Also, now would be a good time to replace the pinion and carrier bearings, pinion seal, and axle seals.

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post #4 of 13 (permalink) Old 11-24-2013, 06:05 PM
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Quote:
Originally Posted by MadMikeyL View Post
...now would be a good time to replace the pinion and carrier bearings, pinion seal, and axle seals.
+1
Once you open it up and get in there, it just makes sense to do it all and do it right.

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post #5 of 13 (permalink) Old 11-24-2013, 06:25 PM
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yeah, sell the 3.55's and get 3.73's. lol

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post #6 of 13 (permalink) Old 11-25-2013, 05:33 PM Thread Starter
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Thanks for the info/tips. I would love to go for 3.73s and all that, but unfortunately money is of the essence. I'm looking for the most inexpensive routes. So, basically, all I need is a rebuild kit with new bearings, shims, and seals, and then a crush sleeve, and speedo gear?
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post #7 of 13 (permalink) Old 11-25-2013, 06:11 PM
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Have you ever built a rearend before? I see this often people think it's the easiest job in the world til they find out what is really involved in properly setting up gears.
We don't know what parts you need exactly until you take it apart, is your s spring cracked and needing replaced? is the cross pin worn? do any of the backing plates to the smaller gears have busted edges needing replaced? Do you want an OEM style seal that will last or are you ok with a leaky aftermarket one. Are you going to crush the sleeve or use a solid pinion spacer? Do you have an assortment of carrier shims to use or are you going to use the aftermarket stack em shims? Do you have a pinion depth gauge to check pinion depth or a new bearing that is honed out so you can test until you get it right? Are your clutches worn? Are you going to replace the axle bearings and seals? Most importantly do you even have a traction lock to start with or do you plan on putting the gears in a open differential? Do you have a inch lb torque wrench capable of reading 10 inch lbs to set preload? Do you have a dial indicator to check backlash?
When you know the answer to all those questions you might be ready to do this yourself, if you are just going to do your best with it despite not knowing the answers good luck, be careful don't get yourself hurt.
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post #8 of 13 (permalink) Old 11-25-2013, 09:17 PM Thread Starter
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Quote:
Originally Posted by dirtyd0g View Post
Have you ever built a rearend before? I see this often people think it's the easiest job in the world til they find out what is really involved in properly setting up gears.
We don't know what parts you need exactly until you take it apart, is your s spring cracked and needing replaced? is the cross pin worn? do any of the backing plates to the smaller gears have busted edges needing replaced? Do you want an OEM style seal that will last or are you ok with a leaky aftermarket one. Are you going to crush the sleeve or use a solid pinion spacer? Do you have an assortment of carrier shims to use or are you going to use the aftermarket stack em shims? Do you have a pinion depth gauge to check pinion depth or a new bearing that is honed out so you can test until you get it right? Are your clutches worn? Are you going to replace the axle bearings and seals? Most importantly do you even have a traction lock to start with or do you plan on putting the gears in a open differential? Do you have a inch lb torque wrench capable of reading 10 inch lbs to set preload? Do you have a dial indicator to check backlash?
When you know the answer to all those questions you might be ready to do this yourself, if you are just going to do your best with it despite not knowing the answers good luck, be careful don't get yourself hurt.
Alan


Haha! No, No. No way I would attempt this myself, lol. I'll have someone else do it. Just wondering what I should take with me and give to them when I go. How much is a traction lock anyway?
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post #9 of 13 (permalink) Old 11-25-2013, 09:25 PM
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New a traction lock is around $400
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post #10 of 13 (permalink) Old 11-25-2013, 10:16 PM
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much cheaper than building one...http://forums.tccoa.com/showthread.php?t=144439

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post #11 of 13 (permalink) Old 05-03-2014, 10:15 PM
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I bought some 3:55's, I heard I need that kit(crush sleeve, bearing, seals) but the guy that was gonna do it said he didn't know how to cuz he said it was a 4 by 4 set up or front wheel drive set up or something, anyway its got the cv axles. How do we get it done??
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post #12 of 13 (permalink) Old 05-03-2014, 10:23 PM
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If it's from a front wheel drive transaxle they won't work at all

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post #13 of 13 (permalink) Old 05-10-2014, 10:08 PM
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So I just won't b able to put in the gears?
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