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VHR + FD Gear Ratio upgrades - 3.9 and 4.08

Originally Posted by Zsteve I like to get up and go and have been thinking about upgrading to a LSD and changing the gears. How does the new gears do

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Old 02-02-2010, 03:24 PM   #11 (permalink)
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Originally Posted by Zsteve View Post
I like to get up and go and have been thinking about upgrading to a LSD and changing the gears. How does the new gears do for normal daily driving too?

If I put in as lsd do I still need the diff from a manual? Thanks.
Yes, the pumpkin of the manual car is necessary.

You can buy a "good used 350Z dif" for 400 $.

For what concern normal daily driving it is so subjective...

I'm a big fan of short gears, I prefer acceleration respect to top speed.

With a 4.08 set up on a 7AT 370Z, the 250 km/h speed limit and the 7400 RPM limit - in 7th gear - are very close each other. So you can imagine the situation with a bit of fantasy...

THE GOOD: the car feels like a toy.... The way it "eats" gears is very exciting to me... And it is true both in the street (1st-2nd-3rd = fantastic ) and in the highway (5th-6th-7th is fantastic too...). 250 km/h are enough for me...

THE BAD: the car burns more gas, exhaust noise can be boring on the highway, especially if you have an aftermarket exhaust... the jump between 4th and 5th gear is still there, the 4.08 set up clearly does NOT remove it... and the engine oil temperature issue is even more critical than stock...

But at the end: i'm very happy with the 4.08 set up

I got my Z to feel it, to live it...

And during the week ends - with my family - it is still very confortable to drive our Murano on the highway @ 120 km/h and 2000 RPM
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Last edited by javol; 02-02-2010 at 04:44 PM.
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