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Old 12-18-2003, 09:46 PM
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Advice on installing gears and posi in 7.5 rear?

I have a 99 s-10 with the 7.5 10 bolt rear. It also has 3.08 gears. For x-mas I got an eaton posi unit and also got 3.73 gears. I am mechanically inclined, at least with the motor aspect. I am not to good with rear ends so I could use any help available with this dilemma. I need to install these parts. I live in Clarksville, Tn. If any one knows a good place to take it to I might even consider that. Thank you for your time and suggestions.

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Old 12-19-2003, 06:30 AM
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You are lucky.

You got a VERY nice X-mas gift there with posi and gearset.
I have experience with a lot of different aspects of automobiles and light, medium, and some heavy duty trucks, BUT:
I won't touch the gears in the axles.
I've seen it done and it doesn't look difficult BUT (again), i have no experience with axle gear replacement.
I will do a search and see what I can come up with, thats all I can do.
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Old 12-19-2003, 12:03 PM
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I hear all the time how you have to get your gears setup properly. I don't know if I'd chance it. Of course you can find manuals and such but I would do alot of research before I tried it.
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Old 12-19-2003, 08:55 PM
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Thanks

Thanks for the advice and I look forward to hearing if you found anything out. I am allowed to buy stuff for my truck at christmas and my birthday. these are the perks of being married and having kids. I wouldn't trade them for the world though. Again thanks for everything.
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Old 12-20-2003, 01:39 PM
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M & M, Thanks for the listing. I appreciate all the help. I need to know what a dial in or indicator is for the rearend. Where can I get one. Thanks for the help.
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Old 12-22-2003, 09:33 PM
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Setting up a rear end isn't terribly hard, but it is time consuming and requires several special tools. You'll need a hydraulic press, good bearing separator, good assortment of pinion and carrier shims, and a lot of room to work. It is critical that the pinion depth and backlash settings are perfect if the gears are to last long. A pinion depth checking tool speeds up the process, as it decreases the amount of trial and error needed to get everything right. Also, there is a crush sleeve between the two pinion bearings. This thing is a pain, even with the rearend out of the vehicle. If you plan on doing this with the rearend in the car, you will definitely need an overhead lift of some sort. I would defienitely consider taking it to someone if you don't have access to all these things
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Old 12-25-2005, 06:09 PM
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Fantasyridesprez :
Hey, hello from another Clarksville guy. I just joined this forum today. I was looking for information on the 4L60E trans in my truck. You may have seen my other vehicle around town on the week ends when the weather was better. It is a 93 Thunderbird. Here is a picture of it.



A friend of mine had a new limit slip and gears installed at a place called Checkers on Riverside Dr last month, and seems happy with it. I need to get a new set of side gears put in my locker, and that area is my weak part in knowledge also. I have a few other things to do first.

Maybe we will bump into each other in the Spring at the strip.

Bruce
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Old 12-26-2005, 09:14 PM
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Good to hear from you. Well, I was able to find a guy to install them and I watched him do it to pick up a few pointers. He didn't even use the dial indicator until it was all done. He was able to shake the gears and tighten and loosen until he felt it was right and then he put the indicator and was dead on. You might have seen my truck around town. It is a 99 s-10 with the v-6 vortec motor. I have added a couple of performance things to it like hypertech programmer, cold air intake. e-fan, flowmaster exhaust, lowered a little with traction bars and finally got the 3.73 gears with limited slip put in. It has a little get up and go. It was running a 10. 93 down at the drag strip here in clarks vegas. it has now ran a 10.14. I belong to a group called all throttle racing. The most popular car you might have seen from our club was the 92 Mustang GT 5.0. It was running high 7's down at the strip but then Mike had to go to North Carolina. Army said it was either back to Iraq for third tour or go to NC then retire. He chose the latter of the 2. He will be back sometime this year. He put a supercharger on it when he got to North Carolina. You can check out our website at www.cardomain.com/id/fantasyridesprez
Well, hope to hear from you soon.

Last edited by Fantasyridesprez; 12-28-2005 at 07:49 AM.
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Old 12-27-2005, 05:58 AM
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Quote:
Originally Posted by Fantasyridesprez
Good to hear from you. Well, I was able to find a guy to install them and I watched him do it to pick up a few pointers. He didn't even use the dial indicator until it was all done. He was able to shake the gears and tighten and loosen until he felt it was right and then he put the indicator and was dead on. You might have seen my truck around town. It is a 99 s-10 with the v-6 vortec motor. I have added a couple of performance things to it like hypertech programmer, cold air intake. e-fan, flowmaster exhaust, lowered a little with traction bars and finally got the 3.73 gears with limited slip put in. It has a little get up and go. It was running a 10. 93 down at the drag strip here in clarks vegas. it has now ran a 10.14. I belong to a group called all throttle racing. The most popular car you might have seen from our club was the 92 Mustang GT 5.0. It was running high 7's down at the strip but then Mike had to go to North Carolina. Army said it was either back to Iraq for third tour or go to NC then retire. He chose the latter of the 2. He will be back sometime this year. He put a supercharger on it when he got to North Carolina. You can check out our website at www.cardoamin.com/id/fantasyridesprez
Well, hope to hear from you soon.

Glad you got the gears done. Where did you get it done at? I want to check into getting the side gears in my Detroit Locker replaced, and having a few places local to check would be nice. I tried the link you gave, but it seemed to be a generic cardoamin site.

I just went through my front suspension, and replaced everything. I have to pull my converter and have it restalled next, then get the rear end work done. I have a new aluminum drive shaft coming to be put in also. I have to install some sub frame connectors and a roll bar also, so will be a garage queen most of the Winter.

Here is a link to my Bird.
http://members.tccoa.com/392bird/

I will be glad when Spring gets here.

Bruce
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Old 12-27-2005, 07:42 PM
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i have done lots of diff rebuilds. you were wise to have someone do it for you.
its not hard, but knowing the little tricks goes a long way.

here is my 97 s10, 4.3.
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