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  #13  
Old 05-02-2011, 07:35 PM
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Re: Upgrading Axle Ratio

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Originally Posted by JDM12 View Post
1. To keep the intake noise down, and probably cost effectiveness.

2. A mix between cost, road manners, and noise.

3. Cost, noise, emissions.

Back to the gearing question, assuming gear ratio X costs the same to manufacture and install as gear ratio Y, which it should, why would Chrysler engineers completely ignore a practically free method to increase both performance and mileage?
Who knows why manufacturers do what they do? I question a lot of things from the factory.

Have you ever changed gears in anything before? It makes a big difference. I don't know why the manufacturers choose what they choose but we can definitely make it better.
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Old 05-02-2011, 09:26 PM
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Re: Upgrading Axle Ratio

Yes I have, and yes it does make a difference that really wasn't the point of this thread. Re-gearing a weekend cruiser is a little bit different from messing with modern vehicles strangled by emissions standards. There is a trade off with this modification was the only point I was trying to make. That and automotive engineers are exponentially more intelligent and experienced with anything auto related, than most car enthusiasts, myself included.
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Old 05-03-2011, 01:48 PM
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Re: Upgrading Axle Ratio

now to really stir the pot... and take it a step further...

Lazzman asked if the gears found in a Hemi would 1) provide a performance benefit for his V6, 2) be a direct swap and 3) if done void the warranty.

There are diffrent opinions on what constitues a performance gain based on the take aways as we have seen by this thread.

I now ask, what about changing to higher gears in the Hemi? Apparently it is discussed and done in the Ram world. As I have stated before I am lifting my Wk2 with the RRO 2.5" lift and adding 33's so a mild bump (3:73s if available) would be good - I think.

I upgraded to 3:73 in my '88 Mustang GT form the stock 2:73s and noticed a much better launch. I know I sacrificed a bit of gas mileage but that wasn't stellar anyway.

When I lifted my '98 ZJ (which had stock D44 rear and 3:73s) 9" & added 35's I upgraded the gears to 4:10s because I needed it to effectively move the 35" MTs.

Lazzman, sorry for hijacking the thread... not my intent but I figure if I started a new one people would say we just talked about this and simply post a link to yours...
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