4.08 gears cruising RPM - video

tonybui · 10-07-2011, 05:08 PM

What does this do to the car??

babbagandu · 10-09-2011, 09:08 AM

Have you noticed any change in gas mileage?

Also, what rpm do you usually shift at during normal driving? I usually shift around 3k-3.5k in every gear. Do you shift higher with the 4.08s?

tranceformer · 01-06-2012, 08:22 PM

Quote:

Originally Posted by babbagandu

Have you noticed any change in gas mileage?

Also, what rpm do you usually shift at during normal driving? I usually shift around 3k-3.5k in every gear. Do you shift higher with the 4.08s?

Since switching to the 4.08 gears, I lost about 2 or 3 MPG (highway) at most.

Blakestyle521 · 01-09-2012, 07:06 PM

what kind/size tires do you run on the street/drag Tranceformer? Have you had your car on the dyno?

Red__Zed · 10-09-2011, 09:16 AM

Quote:

Originally Posted by tonybui

What does this do to the car??

It shortens the final drive ratio for the car. IIRC, the Z has a 3.69 final drive ratio from the factory. Moving to a 4.08 gears the car roughly 10% shorter, requiring more revs to maintain the same speed.

The benefit to this is bringing the car into the powerband much quicker, making it feel much peppier and "ready-to-go"

It's pretty nice on a lot of road courses because it will let you spend more time in 3rd gear without needing a downshift to 2nd.

I think there is a lot of information available if you google it, but I'm happy to answer any specific questions you have on it.

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10-07-2011, 05:08 PM	#1 (permalink)
tonybui A True Z Fanatic Join Date: May 2009 Location: Maryland Posts: 1,397 Drives: 09 Sports 6 Speed Rep Power: 429	What does this do to the car??

10-09-2011, 09:08 AM	#2 (permalink)
babbagandu Enthusiast Member Join Date: Mar 2011 Location: US Posts: 349 Drives: 09 Nismo Rep Power: 16	Have you noticed any change in gas mileage? Also, what rpm do you usually shift at during normal driving? I usually shift around 3k-3.5k in every gear. Do you shift higher with the 4.08s?

01-09-2012, 07:06 PM	#4 (permalink)
Blakestyle521 Base Member Join Date: Jun 2010 Location: SLC Utah Posts: 9 Drives: 04WRX01durama09nismo Rep Power: 16	what kind/size tires do you run on the street/drag Tranceformer? Have you had your car on the dyno?