Question about changing gears?

[EdsPony]

I want to change my rear gears to 3.73's. Will it cause any problems with my car besides screwing up my speedometer? Is there anything else that has to be changed along with the gears?

 

[menasci]

First of all, don't waste your time with 3.73's unless you plan on getting blown.
If your're staying N/A got with nothing less than 4.10's. Trust me!
As far as changing gears, it is a good idea to change the pinion bearings and racers as well.
Other than that, nothing else needs to be changed.

 

[propellerhead]

Read this first.

http://www.tccoa.com/articles/tranny/transmission/page17.shtml