Im running a 315/35/17 its a 5speed is a 4.10 to much for freeway driving?

 

It's not going to help your gas milage if that what your asking. According to this on line RPM calulator you'll be running around 3500 RPM @ 65MPH. I enclosed a link to the calulator.

http://www.csgnetwork.com/multirpmcalc.html

 

That calc is trash. Coming from a guy who dives a Mach 1 and has a brother with a Gt with 4:10's: look at it from my perspective. Mach 1- intake, exhaust, chipped/tuned. Gt- stock, with 4,10's. when we Dynoed my car I put down 350/fly 302/floor. After the Gt had swapped his gears not only did he pull next to me (untill he had to shift sooner than I did hehe) but his cruising speed in 5 is awesome. He can use his 5th gear WAY more.. Even around town. On the free way he cruises at 2400-2600 rpms for 70 (in my mach it's 2k even)

 

With my 4.10's, I'm usually around 2500 at 70 mph. I love having the 4.10's! Depending on your exhaust, it can be kind of loud if it's a long road trip but that's a personal preference. They are a blast to drive around town and I still get 21-22 mpg on the highway.

 

4.10's on highway, not good. 3.73's perfect.

 

i second this.
but if your driving around town 90% of the time, then I'd go for 4.10

 

this is misinfo at it's finest, I run a 275-50-15 tire and switch from 3.73's to 4.10's the rpm change was hardley noticable, I cruise at 2400-2500, These type of responses come from those who read to much on the internet and have little to no first hand experience with such.

 

Fixed it for ya.

 

probably too much for daily driving. on the other side, if you don't mind noise and a thirsty car, quite fun.

 

I went from 4.10's to 2.73's in my turbo 5.0... I honestly prefer the 2.73 & -20rpm @ 70mph.