4.08 Gears + Forced Induction

atx370z · 08-27-2012, 12:31 AM

Is it even worth it taking in to consideration the issues I will have with traction? Or should I ditch the gears and go back to the OEM setup before I even think of going with FI?

TerribleONE · 08-27-2012, 03:37 AM

go back to OEM IMO...

Kingbaby · 08-27-2012, 04:08 AM

Or get super sticky tires so that the bump in torque due to the gears doesn't keep you slipping looking for traction!

The shift points are not that far off

Z eliminator · 08-27-2012, 07:27 AM

Will let you know how it works out.

leighspped · 08-27-2012, 09:45 AM

i would think you would want taller gearings, not shorter...

SharpByCoop · 08-27-2012, 05:55 PM

I wish I had 4.08's.... I'm going through with 1000 more RPM left in fourth. If you have traction (strip) it's going to be easily worth a tenth or two. I'd love them.

Yeah, it would tax street tires. Too bad you can light them up in second. LOL!

Coop

phunk · 08-27-2012, 08:12 PM

Stock gearing, r888 305/30/19 rear camber -0.5. Roast thru second on a cool night. I wouldn't bother 4.08 with boost.

NitrousZ34 · 08-28-2012, 01:03 AM

You are going to need slicks to grab any sort of traction. Since slicks are not legal for streets, your next best bet is to go with a nice drag radial but then again you will probably still spin through second. If you do eventually go FI, you could keep the 4.08 and see how you like it, and if you don't then just go ahead and switch back to stock or even go taller. It doesn't hurt to try and see what you like.

LafitteZ · 08-28-2012, 05:54 PM

My twin turbo 1st gear is non existent man. Dont do it unless your going to make a track car. other then that the car pulls extremely hard. I was acually thinking of doing a 3.3 in the rear just to have more time in boost in 1st gear.

blackonorange · 08-28-2012, 07:18 PM

I was thinking of doing it for fun factor I bet 2nd and 3rd would be wild with 4.08's under boost

DR_ · 08-28-2012, 07:22 PM

Quote:

Originally Posted by atx370z

Is it even worth it taking in to consideration the issues I will have with traction? Or should I ditch the gears and go back to the OEM setup before I even think of going with FI?

Trade me your pumpkin for my <3k mile stock one

I live pretty close..

atx370z · 08-29-2012, 10:10 AM

Quote:

Originally Posted by DR_

Trade me your pumpkin for my <3k mile stock one

I live pretty close..

I might actually take you up on that. However, I live 330 miles south of ATX now...

DR_ · 08-29-2012, 10:23 AM

There is one for sale locally so I could buy and ship it to you and then you could ship yours back.

370Z_RACER · 08-30-2012, 07:55 PM

short gears are good to compensate for lag

esfourteen · 08-30-2012, 10:16 PM

grab an open 350z diff with a 3.5 fd, drop in quaife ATB lsd, enjoy.

08-27-2012, 12:31 AM	#1 (permalink)
atx370z Track Member Join Date: Aug 2010 Location: Austin, TX Posts: 637 Drives: 10 370Z T/S M6 Rep Power: 16	4.08 Gears + Forced Induction Is it even worth it taking in to consideration the issues I will have with traction? Or should I ditch the gears and go back to the OEM setup before I even think of going with FI? __________________ 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

08-27-2012, 03:37 AM	#2 (permalink)
TerribleONE A True Z Fanatic Join Date: Jan 2009 Location: Socal Posts: 10,203 Drives: WOT Rep Power: 5850	go back to OEM IMO... __________________ 638WHP 541WTQ @ 13.5PSI Build thread

08-27-2012, 07:27 AM	#4 (permalink)
Z eliminator A True Z Fanatic Join Date: Jul 2009 Location: Ontario Canada Posts: 1,659 Drives: 370 Z 7AT Sports Rep Power: 19	Will let you know how it works out. __________________ 12.343 @114.14 . 4.5 stroker motor is now being built. Dec 1 2015.

08-27-2012, 09:45 AM	#5 (permalink)
leighspped Enthusiast Member Join Date: Feb 2011 Location: Morristown Posts: 444 Drives: US Rep Power: 14	i would think you would want taller gearings, not shorter... __________________ Performance: Fast Intentions LTH + CBX + Injen CAI + UpRev + KW3 + Whiteline sway bars + short throw shifter + 34r oil cooler = 335whp + (OS Giken Clutch and Diff) Interior : Recaro seat + Alpine HU and Rockford Fosgate Amp and Speakers + Passport 9500ci + JDM shift knob + LED's Forged avant garde m310's 19x9 19x12 RE-11

08-27-2012, 05:55 PM	#6 (permalink)
SharpByCoop Enthusiast Member Join Date: Sep 2010 Location: Connecticut Posts: 286 Drives: '08 G37S - Graphite Rep Power: 15	I wish I had 4.08's.... I'm going through with 1000 more RPM left in fourth. If you have traction (strip) it's going to be easily worth a tenth or two. I'd love them. Yeah, it would tax street tires. Too bad you can light them up in second. LOL! Coop __________________ Jim Cooper - (Retired: '08 Infiniti G37 Sport • TheShopCT built • 11.13 @ 123 mph (click for vid) • GTM Stage II Twin Turbo • 5-speed A/T Level Ten built • 591whp @17 lbs boost)

08-27-2012, 08:12 PM	#7 (permalink)
phunk A True Z Fanatic Join Date: Mar 2009 Location: Chicago Posts: 3,668 Drives: 370 Rep Power: 974723	Stock gearing, r888 305/30/19 rear camber -0.5. Roast thru second on a cool night. I wouldn't bother 4.08 with boost. David Parra, AntiVenom and Mysilverz like this. __________________ Charles @ CJ Motorsports : Website \| Facebook \| Instagram \| YouTube Home of the 9 second, stock longblock, stock drivetrain 6MT 370z. 9.91 @ 142mph

08-28-2012, 01:03 AM	#8 (permalink)
NitrousZ34 Banned Join Date: Apr 2012 Location: Canoga Posts: 505 Drives: Myself crazy Rep Power: 0	You are going to need slicks to grab any sort of traction. Since slicks are not legal for streets, your next best bet is to go with a nice drag radial but then again you will probably still spin through second. If you do eventually go FI, you could keep the 4.08 and see how you like it, and if you don't then just go ahead and switch back to stock or even go taller. It doesn't hurt to try and see what you like.

08-28-2012, 05:54 PM	#9 (permalink)
LafitteZ Track Member Join Date: Jan 2011 Location: lafitte, la Posts: 698 Drives: 40th anniversary Rep Power: 15	My twin turbo 1st gear is non existent man. Dont do it unless your going to make a track car. other then that the car pulls extremely hard. I was acually thinking of doing a 3.3 in the rear just to have more time in boost in 1st gear.

08-28-2012, 07:18 PM	#10 (permalink)
blackonorange A True Z Fanatic Join Date: Jul 2011 Location: Saskatchewan Posts: 1,078 Drives: 09 370z Rep Power: 16	I was thinking of doing it for fun factor I bet 2nd and 3rd would be wild with 4.08's under boost

08-29-2012, 10:23 AM	#13 (permalink)
DR_ Track Member Join Date: Jul 2009 Location: Dallas Posts: 981 Drives: Touring/Sport M6 PG Rep Power: 17	There is one for sale locally so I could buy and ship it to you and then you could ship yours back.

08-30-2012, 07:55 PM	#14 (permalink)
370Z_RACER Base Member Join Date: Aug 2012 Location: Racertrack Posts: 29 Drives: 370z Rep Power: 13	short gears are good to compensate for lag

08-30-2012, 10:16 PM	#15 (permalink)
esfourteen A True Z Fanatic Join Date: Mar 2010 Location: LI, NY Posts: 1,375 Drives: 40th TT Rep Power: 18	grab an open 350z diff with a 3.5 fd, drop in quaife ATB lsd, enjoy. __________________ Build Thread \| GTM TT Install Thread \| Engine Build Thread

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