C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Looking for Differential gear swap guide

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Old Feb 11, 2012 | 03:09 AM
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Default Looking for Differential gear swap guide

How difficult is it to swap out the gears? Is is something best left to a shop or can I do it myself? If I do need to go to a shop, can anyone recommend a good one? I live in Santa Barbara, CA (80 miles north of Los Angeles for the non locals). Thanks!!


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Old Feb 11, 2012 | 05:47 AM
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Originally Posted by x01660
Looking for Differential gear swap guide
Just follow the instructions here
http://www.pirate4x4.com/tech/billavista/Gear_Setup/

Yes you can do it yourself but can take time to get right if you haven't done one before;
do it wrong and you will have problems
Most would advise pulling the diff head out yourself ( saves labor cost ) and getting a shop to setup the new gears
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Old Feb 11, 2012 | 11:53 AM
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Check the for sale section here today. Another member is selling a low mile D36 with 3.07 gears at a decent price. You won't need the batwing as it is the same as what you have, so shipping isn't that bad,
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Old Feb 11, 2012 | 12:22 PM
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Thanks for the heads up, aminnich. I sent him a PM. I think that will be my best bet; I am sure I can replace the whole carrier on my own. Or is there anything I should be looking out for?


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Old Feb 11, 2012 | 12:27 PM
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I did mine myself with no problem. When you are ready to make the swap send me a PM and I will send you the step by step procedure.
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Old Feb 11, 2012 | 12:34 PM
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Ok, fantastic! Thanks a ton!


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Old Feb 11, 2012 | 01:02 PM
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Originally Posted by x01660
Thanks for the heads up, aminnich. I sent him a PM. I think that will be my best bet; I am sure I can replace the whole carrier on my own. Or is there anything I should be looking out for?


x01660
If you have a different Gear ratio I have the gear you need they are hard to find. Let me know.
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Old Feb 11, 2012 | 01:06 PM
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Originally Posted by ch@0s
If you have a different Gear ratio I have the gear you need they are hard to find. Let me know.
How much do you want for the gear set? I'm trying to keep this under $500 if possible. Let me know. Thanks.


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Old Feb 11, 2012 | 01:41 PM
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Originally Posted by x01660
How much do you want for the gear set? I'm trying to keep this under $500 if possible. Let me know. Thanks.


x01660
I meant if you buy the used diff with the 3.07 gear and are running a different ratio now I have the speed sensor plastic gear you need. BTW rep[lacing the Carrier is pretty easy just time consuming. There are some good write ups on the subject. If i can find one ill post it up for you.
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Old Feb 11, 2012 | 01:51 PM
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Here is a good one by raidmagic. If you are not in a hurry you can find good ones here. People are always swapping the 307s for bigger and sell them pretty cheap. I got a 307 with low miles for $300.
http://www.digitalcorvettes.com/foru...highlight=rear

Last edited by ch@0s; Feb 11, 2012 at 01:56 PM.
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Old Feb 11, 2012 | 04:08 PM
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Ok. I just got the VIN from the owner. (I haven't bought the car yet, but he's holding it. 1 week to go!!)

1G1YY23P1N5105200

I've been trying to find the RPO's for that car, but none of the dealers have that info. Is there anyone here who could help me out or point me in the right direction? Thanks a ton, guys. I really do appreciate all the help!


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Old Feb 11, 2012 | 05:55 PM
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Originally Posted by x01660
I've been trying to find the RPO's for that car, but none of the dealers have that info.
You won't without looking at the RPO label in the car itself
or paying for a build sheet from the Vette museum

Ask owner if it has got G92 on the RPO label
3.07 gears

Last edited by vetteoz; Feb 11, 2012 at 05:58 PM.
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Old Feb 11, 2012 | 06:43 PM
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If the car has the original console lid look on the inside of the lid for a tag. If there, it should have all the option codes and if you see G92 it has the 3.07 axle if not probably a 2.59.
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