Originally Posted by Kastley85891 ^My budget all in was about 1500 bucks so looks a go go, thx for information Have you finished install on this update? I'm interested how
|
|
LinkBack | Thread Tools | Display Modes |
05-03-2011, 03:49 PM | #17 (permalink) |
A True Z Fanatic
Join Date: Nov 2009
Location: ATX 370 - Sold
Posts: 1,149
Drives: 2003 Wagon
Rep Power: 18 |
Not even got parts as yet but thinking on it,,, 2 of my 4 kids at docs this week so just dropped 700 bucks, on hold for a little while, but will get it done.
__________________
Boosted V8 hunter 2850 lbs and 375WHP |
05-03-2011, 04:37 PM | #19 (permalink) |
A True Z Fanatic
Join Date: Jul 2009
Location: Ontario Canada
Posts: 1,659
Drives: 370 Z 7AT Sports
Rep Power: 19 |
The 4.08 's work great with my 7 AT. 1/8 mile in 8.01 seconds, the 1/4 in 12.42 @114.3. Im turning 6000 rpm in 5th.
The diference in rpm is aprox, 700 to 800 rpm more and fuel consuption goes from 37.5 to 31.5 mpg. 2nd gear is the gear of punishment as the car just screams. Now hold the gas and brake at 2200 rpm and launch the car . It becomes a cruise missle. I shift at 7800 to 7900 rpm. 3rd gear is also very powerful and fast.
__________________
12.343 @114.14 . 4.5 stroker motor is now being built. Dec 1 2015. |
05-03-2011, 05:07 PM | #21 (permalink) | |
Track Member
Join Date: Dec 2009
Location: houston
Posts: 611
Drives: 370z Tour Black 7AT
Rep Power: 17 |
Quote:
__________________
Mod List: FI 18" CBE// Eibach Springs// Rear Camber kit// Ingen CAI// |
|
05-03-2011, 10:56 PM | #22 (permalink) |
A True Z Fanatic
Join Date: Nov 2008
Location: Edmonton, Alberta ...eh
Posts: 1,171
Drives: 2017 Touring auto
Rep Power: 19 |
I found that the 4.08 gears are too much gear for the manual transmission drivers. The shifts between 1'st and 2'nd are so quick, I bounced off the rev limiter far too many times in first and second gears.
The SRM seemed to be out a few hundred RPM but either it has adapted or I'm use to it now as I barely notice it. I've changed my rear diff to the 3.9 gearset from the 4.08 and hopefully this will make the 1'st and 2'nd shifting easier, SRM and less rev limiter bounces. Time will tell.
__________________
[B]2009 & 2017 370Z Touring Sport Autos SOLD |
05-03-2011, 11:06 PM | #23 (permalink) |
A True Z Fanatic
Join Date: Oct 2009
Location: NY
Posts: 2,391
Drives: No longer a Z
Rep Power: 20 |
I have the 4.08s and have no complaints.. i took videos of myself at different cruising speeds before and after and i forget the exact difference it was but it was only like 4-500 rpms... at 80 i think I'm at 3500 or so... for some that may be too high but I still get 24+ on highway and 15-17 city... This really all depends on your right foot though, the FD def didn't hurt the gas substantially...
I myself don't have a problem hitting 2nd, its not all that quick IMO, top end wasn't hurt that much at all but the final drive does help you down low more than up top... the car "feels" much faster and its faster but not like night and day you know... but note the two best times for us 370s have 4.08 FD, one auto (z elim ) 1 6M.... i went 12.94 without the final drive but have yet to go back... swapping to 305s and the GTS's helped with traction from my stock sized nt05s that were worn down when i installed the final drive... the worn tires had a little traction issue in first after final drive... also note that i do not have SRM so i can not tell you how it effects it... my right foot works just the same as it did before the install tho! Is it worth the money ? I am sure, its up to the person... If you plan to go FI at any point, obviously don't do it.. but if you want to optimize your car NA'ed than go for it..
__________________
09 370Z 6M PW - FBO Best 1/4 mile = 12.926 @ 109 SOLD -- 08 BMW 135i - FBO 12.1@120mph SOLD -- white 09 e92 335 Coupe Mtech - 11.9 @ 119 :-) |
05-03-2011, 11:30 PM | #24 (permalink) |
A True Z Fanatic
Join Date: Dec 2009
Location: wpb, fl
Posts: 1,146
Drives: 09 370z
Rep Power: 18 |
Ok , you will lose cruise control with and auto on these gears, top speed not so much as i have gone 167 with limiter removed. i usually charge about 1100$ for the gears installed so this will help you to have an idea on cost. The SRM will be off about 300ish rpm. I have had the SRM shut down from time to time doing high speed runs , typically 120+ speed. I have not installed the gears on an auto yet, but i do know the carrier is different from the auto to manual. So i can to be sure the these gears will bolt to an auto carrier. to be sure you will need to find a manual diff from a 370 or later model 350. I have heard that the diff from the 350s will fit but the pinion flange is different, so that will have to be swapped, no big deal. The gears will make a HUGE difference !!
Also if you need the gears let me know as i can get them at a great price!!
__________________
Best 1/4 mile 12.24 Best mph 114.5_______ |
05-04-2011, 12:52 AM | #27 (permalink) | |
A True Z Fanatic
Join Date: Feb 2009
Location: FL
Posts: 4,776
Drives: Baby Shark
Rep Power: 701615 |
Quote:
Jnaut, I have a quick ? regarding the 4:08s. Our car will be seeing it's share of HPDE track days. Obviously the gears are a big improvement for drag racing, what would be the pros and cons for track use? I've gotten conflicting opinions on the gears for track use. Thanks. |
|
05-04-2011, 12:44 PM | #28 (permalink) | ||
A True Z Fanatic
Join Date: May 2010
Location: Tampa
Posts: 4,207
Drives: RZ34
Rep Power: 31940 |
Quote:
How has your SRM been effected? What is your RPM's at 80 considering this is my average speed in the interstate. Thanks! Quote:
Thanks everyone has been given rep that has helped me!
__________________
Project Z <--Click - Check out the link too many mods to list! |
||
05-04-2011, 06:31 PM | #29 (permalink) |
A True Z Fanatic
Join Date: Jul 2009
Location: Ontario Canada
Posts: 1,659
Drives: 370 Z 7AT Sports
Rep Power: 19 |
My gas milage is in Canadian gals. Converted to US gal it would be 31.25 and it droped to 26.25 mpg.
Z
__________________
12.343 @114.14 . 4.5 stroker motor is now being built. Dec 1 2015. |
Bookmarks |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
uconn to the final four! | Bleek | Sports | 20 | 04-05-2011 11:43 AM |
Final meal | Corona370z | The Lounge (Off Topic) | 4 | 03-08-2011 10:40 AM |
Final gearing | Skeeterbop | Engine & Drivetrain | 3 | 02-01-2011 07:32 AM |
Nissan 4.08 Final Drive Gears | Joebarchuck | Engine & Drivetrain | 1 | 01-15-2011 01:59 PM |
Final papers | lachap55 | Nissan 370Z Pricing / Ordering Discussions | 10 | 09-08-2010 07:00 PM |