Sleep Deprived

Get the 4.10s and don't look back! Trust me, you won't regret it. Your car will be a completely different animal once you put the 4.10s on.

Phya

Not to threadjack, but what is the max MPH with 4.10s? Over 147? I just want to ensure that I can still go as fast as I..uh..need to.

Argonaut

Using the calculator: http://www.wallaceracing.com/Calculators.htm

With inputs of:
RPM = 6200
Tire Diameter = 27
rear ratio = 4.1
trans ratio = .62 (the 5th gear ratio of the Tremec TR-3650 tranny)

Yields a speed of 195 MPH. Pretty Fast! Of course the aero dynamics and stock power of the car never allow you to get there.

So the answer is NO, 4.10 gears do not effect your top speed.

tn_gt

ok so i know nothing about the different gears so im trying to learn, when you change to 4.10's does it change just the first gear, all the gears or what?

grampa_stang

All gears. Every gear, 1st-5th will wind up faster.
Think of it like a bike. You have the front chainrings in different sizes.
The small front chainring is much easier to pedal than the front big ring. Putting in
4.10's will be like going from the front big ring to the small front ring.

Hope that kind of makes sense.

matt07GT

I have been thinking about getting 4.10's....but I have heard that 3.73's are better for autos

undefeated

My best mod to this day is the 4.10's.

landis

Ok well I'm a Chevy guy also since I have a 66 Nova but let me tell you it made a huge difference. I was on the fence about it also but now I have no doubt that I made the right choice. I was at the track last week and raced this 07 GT and was beating him by .6 of a second in the 1/8 mile. I tried to tell him it was stock but he was noticing that I was shifting more than he was. Ooops.

MELLOWYELLOW06

I love the 4.10's. I do go through 1st really fast now that I got the blower, but I still wouldnt changs it.

Phya

Thank you! That was very helpful. I know our aerodynamics limit us to 147MPH, so as far as I'm concerned, my gearing doesn't need me to let me go over 160MPH. Who knows, maybe I'll even consider 4.30s..any body have experience with 4.30s?