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Discussion Starter · #1 ·
Anyone know what an average price to have a sete of gears installed is? .. also I do alot of highway driving and I think 4.10's might be too much? will 3.73 make a big difference from the factory 3.08's ? Also does anyone have rpm range with 3.73 & 4.10's @ about 80mph .. TIA Chris
 

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95REDgts said:
Anyone know what an average price to have a sete of gears installed is? .. also I do alot of highway driving and I think 4.10's might be too much? will 3.73 make a big difference from the factory 3.08's ? Also does anyone have rpm range with 3.73 & 4.10's @ about 80mph .. TIA Chris
Since you don't have a Cobra, I don't think you have 3.08 gears. You either have 2.73 or 3.27 gears (like me). Check your axle code on your driver side door post.

But yeah, gears will make a nice improvement. I'll be getting 4.10 gears soon.

The RPM range thing can be found using one of the calculators on the site. go to the corral.net homepage and click "Mustang Tech" and then "Calculators" for that info.
 

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Here's that link
http://www.corral.net/tech/gearcalc.html

I'm not sure what the rpms are at 80 but I know in 5th gear at 60 MPH my car is at 2000rpm and 90mph at 3000 with 245/50/16's and it comes out to 3.73997872026794 on the calculator which is pretty darn accurate!

Edit: the calculator said:
Engine RPM: 2659.55167412131
Vehicle Speed: 80
Read End Gear: 3.73
with the tires I have in 5th gear..............
 

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Discussion Starter · #4 ·
Thanks guys .. nother quick question for you .. if i went 3.55 is it true that I would not have to change anything other than the gear? No speedo changes or anything like that .. sorry I am in the dark bout this stuff :eek:
 

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even with 373 all you have to do is change the gear at the end of the cable in the tranny and that will fix your spedo hope that answers the question
 
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