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4.08 or 3.90 gear questions...

3.69 ring & pinion = stock 6MT 4.08 ring & pinion = 10% shorter than stock 3.9 ring & pinion = 5% shorter than stock Not only that, but IIRC

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		Nissan 370Z Forum > Nissan 370Z Tech Area > Engine & Drivetrain
4.08 or 3.90 gear questions...

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11-20-2011, 08:26 AM	#4 (permalink)
tranceformer A True Z Fanatic Join Date: Nov 2008 Location: Palm Beach, FL Posts: 1,213 Drives: 2009 370Z PW 6MT Rep Power: 268	3.69 ring & pinion = stock 6MT 4.08 ring & pinion = 10% shorter than stock 3.9 ring & pinion = 5% shorter than stock Not only that, but IIRC the 3.9 is an aftermarket and more expensive. IMO 5% isn't enough of a change to justify the work, not to mention it costs more. Just go with the 4.08's and call it a day. __________________ Ray 2009 370Z Base Sport 6MT / 12.860 @ 109.09mph / 1.921 60ft / street tires official 1/4 mile track times

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