4.08 gears cruising RPM - video

atx370z

For all that are curious... I know I was before I got my gears installed and couldn't find anything. Sorry for crap quality. Taken, edited, uploaded and posted her fom my iPhone. I can do additional videos upon request. Wanted to do a 1st through 3rd gear pull but couldn't keep traction in 1st or 2nd tonight... Chilly out.

Enjoy!

370Z 4.08 Gears Cruising RPM - YouTube

PS. 4.08 gears and jwt flywheel are definitely worth it.

PSS. Berk CBE with Berk HFC has little bit of rasp ... Sounds great otherwise.

__________________
Berk HFC & CBE, Stillen G3's, AMS Crank Pulley, JWT Flywheel,
4.08 Gears, UpRev, H&R Springs and 20mm Spacers, JDM
Rear Fog, EVO-R Front Lip and CF Upper Cover, 305's

atx370z

Also, video starts at 75mph, goes to 80, 85 then 90 at end.

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Berk HFC & CBE, Stillen G3's, AMS Crank Pulley, JWT Flywheel,
4.08 Gears, UpRev, H&R Springs and 20mm Spacers, JDM
Rear Fog, EVO-R Front Lip and CF Upper Cover, 305's

ScGRaceR

dude nice!

repped

__________________
2010 PW Nismo: GT-R Start / Stop | Kenwood Navi / DVD | Escort X50 | F.I 18' CF | F.I Resonated Test Pipes | PasswordJDM | Post MAF Tubes | K&N Drop In's 297 RWHP 9/25/11
WTB SPARE RIM TIRE. PM ME

cotizi

kinda related but, did you get all your install problems worked out?

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Past - 2009 Silver 6MT Sport 370Z
Current - 2012 VW GTI 6-Speed

Red__Zed

Seems to be pretty reasonable at cruise.


4.08s on this car are like running the 4.55s on an s...wakes the car up so much, and makes it so much better to drive.

tonybui

What does this do to the car??

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?

Red__Zed

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.

sfearl1

i'd love to see this video... OP, can you re-post on youtube?

andre12031948

With my 3:90 gears, I shift at 2,000rpm to 2,400rpm. Not only does it drive fine, but the wear on enginge is much less than shifting at higher rpm. A car with 100k mileage that was shifted at 3,500rpm is not in the same condition as one that was shifted at 2,500rpm. A human heart gets stronger when excersized(higher pulse rate) an engine get weaker......sorry

Blakestyle521

Trying to decide which final drive would be best. I have a bone stock 09 370 nismo, that i plan on boosting with the gtm TT kit. This kit alone will give me approx 500whp. However, i want to do gears first. Any thoughts on this Dilemma?

christian370z

You'd have significantly increased traction issues with the shorter 4.08 gears. If I were in the market for shorter gears, I would try the 3.9 although I think most people find the stock gearing of the car is best for FI cars to maintain as much traction as possible.

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-320whp / 259wftlbs-
SP Rays -- RE-11s -- SpecialtyZ Tune -- Swift Springs -- Stillen 25R Oil Cooler -- Stillen G3 Intakes -- Berk HFCs -- F.I. 12" CBE -- Stillen Sway Bars -- Es14 Spring -- INGS+1 lip -- CF Spoiler -- GTR Start Button -- VLED Parking Lights -- PWJDM V2 shift knob

tranceformer

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

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Ray
2009 370Z Base Sport 6MT / 12.860 @ 109.09mph / 1.921 60ft / street tires
official 1/4 mile track times

Blakestyle521

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

TypeOne

Video line doesn't work.