3:90 Gearing?
Thread Starter
Joined: Apr 2006
Posts: 4
3:90 Gearing?
I ordered a set and they will be installed next week. I could not make up my mind over 373s or 410s so I ordered 390 for a stick. I was not able to read any post of people that had done this to a manual. Can anybody tell me what to expect on milage and performance please, as I am also installing Steda Pullies at the same time on my 05 GT. Do you think I will see a big jump in performance or just a mild one?
Thanks for your help,
Thanks for your help,
Retired MF Moderator
Joined: Apr 2004
Posts: 7,156
From: I live in Canada, eh
RE: 3:90 Gearing?
These guys must not have noticed that you said you had an '05 GT because, actually, you won't notice much of a difference at all going from the stock 3.55s to 3.90s.
It's maybe a 300 RPM difference in any given gear at any given speed.
I think that you will notice that it does accelerate a little faster, but some of that will come from the pullies.
You made a nice safe gear change that will give you a little bit more get up and go but even 4.10s are not a steep gear for your car. You could have easily gone with 4.30s, so you have nothing to worry about.
It's maybe a 300 RPM difference in any given gear at any given speed.
I think that you will notice that it does accelerate a little faster, but some of that will come from the pullies.
You made a nice safe gear change that will give you a little bit more get up and go but even 4.10s are not a steep gear for your car. You could have easily gone with 4.30s, so you have nothing to worry about.
6th Gear Member
Joined: Dec 2004
Posts: 15,865
From: Ludlow, Mass
RE: 3:90 Gearing?
ORIGINAL: MikeHawke
These guys must not have noticed that you said you had an '05 GT because, actually, you won't notice much of a difference at all going from the stock 3.55s to 3.90s.
It's maybe a 300 RPM difference in any given gear at any given speed.
I think that you will notice that it does accelerate a little faster, but some of that will come from the pullies.
You made a nice safe gear change that will give you a little bit more get up and go but even 4.10s are not a steep gear for your car. You could have easily gone with 4.30s, so you have nothing to worry about.
These guys must not have noticed that you said you had an '05 GT because, actually, you won't notice much of a difference at all going from the stock 3.55s to 3.90s.
It's maybe a 300 RPM difference in any given gear at any given speed.
I think that you will notice that it does accelerate a little faster, but some of that will come from the pullies.
You made a nice safe gear change that will give you a little bit more get up and go but even 4.10s are not a steep gear for your car. You could have easily gone with 4.30s, so you have nothing to worry about.
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