4.7 final drive vs 5.1 final drive

Hi,

Im planning to upgrade to a 5.1 final drive but just wondering whats the difference between 4.7 and 5.1 on a final drive? Does it make a big difference in acceleration?

Thanks

hope you dont do much highway driving

I kinda do lol, but I need to change my final drive as mine was is stuffed. Since i need to change it i thought i might as well go 5.1 like the FN2R's

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Originally Posted by vtecing

hope you dont do much highway driving

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Isnt that what he has 6th gear for?

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Originally Posted by JDM EP3

Isnt that what he has 6th gear for?

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My DC5S does about 2800rpm @100kph on stock drivetrain (4.764 FD) in 6th gear. Increasing FD to 5.1 will bring that up to just short of 3000rpm.

Sometimes I wish they just made the 6th gear really long.

fuuuark what a difference in gearing for the DC5. my 4.7 in my dc2r box is at about 3850RPM at 100km/h.

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Originally Posted by Super-DA9

fuuuark what a difference in gearing for the DC5. my 4.7 in my dc2r box is at about 3850RPM at 100km/h.

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6 speed box vs 5 speed box.

3850 @ 100km/h doesn't sound like 4.7 fd

Sounds like 4.9?

mine sits abit over 3ks @ 100kmph on a 4.7fd b18c

oem dc2r is 3500rpm @ 100km/h & roughly 115-117km/h @ 4000rpm.

from memory.

lmzooooo

Quote:

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Originally Posted by Bludger

6 speed box vs 5 speed box.

3850 @ 100km/h doesn't sound like 4.7 fd

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my b18c7 4.7 LSD eg runs at a stable 3.5 at 100 kmh

Quote:

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Originally Posted by Bludger

oem dc2r is 3500rpm @ 100km/h & roughly 115-117km/h @ 4000rpm.

from memory.

lmzooooo

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that sounds about right ! ... is 3850 normal at 100 ks !?

No it's too high unless you have a different (higher) FD.