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Old 05-13-2010, 11:41 PM   #1
jam69007
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Member#: 86968
Join Date: May 2005
Chapter/Region: South East
Location: West Palm Beach, FL
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02 WRX / 05 350Z
'11 335d

Default aftermarket taller 5th gear?

i am considering upgrading 1-4 in my 5spd but i want to know if there are any options as far as a taller 5th gear or changing the pinion/ring gear. i would like the 1-4 to auto cross with/ have fun but i would also like to see less than 3krpm when cruising in 5th at 75-80mph. do any of you have any advice on this other than a 6spd swap? thanks for any suggestions
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Old 05-13-2010, 11:44 PM   #2
Uncle Scotty
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TALLER?????

the bloody 5th is already a WAY overdrive at .738

****ing 4th is .972

are you nuts???

taller tires
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Old 05-14-2010, 12:03 AM   #3
Concillian
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There are no taller 5th gears. You could go 3.7 final instead of your 3.9, but that will definitely change 1-4.
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Old 05-14-2010, 02:10 AM   #4
jam69007
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Vehicle:
02 WRX / 05 350Z
'11 335d

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Who sells a ring and pinion to change it to a 3.7 final drive?

What the heck is wrong about wanting to upgrade my gears AND get better gas mileage when cruising?
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Old 05-14-2010, 07:10 AM   #5
carnz-pj-410
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1993 Legacy Turbo

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oem 06-07 wrx R&P is 3.70
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Old 05-14-2010, 08:16 AM   #6
Unabomber
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To change your final drive would cost $XXXX so doing so would be super moronic. LISTEN to Uncle Scotty. Get some taller tires to change your APPARENT final drive, read the Transmission FAQ for how to change your final drive as there are calcualtors in there to do it smartly. Using this method, your autocross wheels/tires would be great and your street wheels/tires would be great for MPG.
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