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whats right with this 12bolt and setup

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Old Jun 14, 2005 | 12:37 PM
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Exclamation whats right with this 12bolt and setup

made up my mind im getting a 12 bolt over a 9"...I had made up my mind on the 3.73 but it seems that most people favor the 4.10...

This is what I want...I want a gear ratio that will put some mean torque down but I dont want to break my tires loose when I tap on the gas.

Im about to put a procharger in then ill be running around 450wrhp and around the same amount of torque. Is the 4.10 better for higher power f-bodys or is it better for mostly stock cars???
(im running on 295/40/18 Kumho's)

Also! how much more lowend torque and power will get to the rearwheels running a 4.10 over the stock, and will it severly kill my top end speed???
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Old Jun 14, 2005 | 01:25 PM
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From what I gathered:

4.10 - NA
3.73 - FI
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Old Jun 14, 2005 | 02:45 PM
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Originally Posted by Blacker
From what I gathered:

4.10 - NA
3.73 - FI

not sure if i understand your post???
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Old Jun 14, 2005 | 02:48 PM
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4.10's for a naturally aspirated engine
3.73's for a forced induction engine
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Old Jun 14, 2005 | 04:00 PM
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Originally Posted by Blacker
4.10's for a naturally aspirated engine
3.73's for a forced induction engine
really...thats intresting, ive never heard that. Im curious the reasons why that is so. Is it because FI yeilds more power/more wear and tear on the rearend or what???
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Old Jun 14, 2005 | 05:34 PM
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You would run out of gear quicker with 4.10's and FI. That is, you could be shifting to 5th. With a 3.73, you would stay in 4th. I am assuming you have a M6.

Last edited by Blacker; Jun 14, 2005 at 05:40 PM.
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Old Jun 14, 2005 | 05:49 PM
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Originally Posted by SLP/Drew
made up my mind im getting a 12 bolt over a 9"...I had made up my mind on the 3.73 but it seems that most people favor the 4.10...

This is what I want...I want a gear ratio that will put some mean torque down but I dont want to break my tires loose when I tap on the gas.

Im about to put a procharger in then ill be running around 450wrhp and around the same amount of torque. Is the 4.10 better for higher power f-bodys or is it better for mostly stock cars???
(im running on 295/40/18 Kumho's)

Also! how much more lowend torque and power will get to the rearwheels running a 4.10 over the stock, and will it severly kill my top end speed???
I think 3.73 will definately be the better choice. But I expect with the procharger, you will still break the tires loose.
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Old Jun 14, 2005 | 05:50 PM
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Originally Posted by SLP/Drew
really...thats intresting, ive never heard that. Im curious the reasons why that is so. Is it because FI yeilds more power/more wear and tear on the rearend or what???
You'll get to the end of your power band too quick with the 4.10s. Most of the time that is the case.
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Old Jun 14, 2005 | 06:40 PM
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ok, thanks guys for the info...yes it is an M6...the guy I talked to also recomended 33spline what is yalls imput on that? oh yea for the brakes are we 4channel or 3 channel (so I know how to fit the rearend with brakes)
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