My 370z "unicorn"

Zerkster

What factors made you decide on the 4.08?

I recently went with the 4.08. Debated back and forth between a 4.08 and a 3.90, but after deciding that I was primarily looking to use the car for back country twisty roads and some autoX, I went with the 4.08.

Makes the gears pretty short ngl.. lol

70mph in 6th, the engine is somewhere near 3500rpm and 80mph encroaches on 4krpm. Might want to keep that in mind depending on how much highway driving you do.

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filip00

One question tho, do you think you'd rather go to 3.90 if possible now, or you think you've made a good choice?

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Zerkster

For what I use the car for, it's perfectly fine. I take it to work, 30 min back roads and quick elevation changes and then weekends around town. Once I get to a certain point I plan to do some light autoX and such.

My main focus when I chose gearing was weight, braking, and handling. Z's really do have enough power after flow and tune mods unless your really going crazy.

Only you truly know what you want from the car and what the likelihood is that youll drive it on the highway a lot. Another consideration, if you ever plan to really start making power, you'll quickly "overpower" (for lack of a better word) the 4.08.

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See me take parts off and put parts on: http://www.the370z.com/members-370z-...t-revival.html

filip00

Alright, I think I completely understand what you're saying thank you!

My idea behind the shorter diff was also the fact that I do like the gear spread to be 2nd gear to ~60mph, third to ~93mph etc. After very much thought, I ditched the idea of any forced induction to get more power - maybe a tune to get a few extra hrsprs, but nothing more. We have super strict car policies here and there's virtually zero chance of me having a street legal car if I do any forced induction. Shorter diff will, I believe, liven the car up just that tiny bit more to get rid of the sluggish low rpms in second gear with the stock 3,7 diff. I can't wait to try the Z with the shorter drive...

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