Thread: 3.9 upgrade worth it, dedicated track car?
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Old 01-05-2017, 10:40 PM   #3 (permalink)
ban25
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Location: SF, CA
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I have the 3.9 and if I were to do it again, I would go with the 4.08 gears...if not 4.36. With EcuTek, you can get the new gear ratios programmed in for SRM and mine is spot-on.
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2017 Corvette Z06 7MT | 1LE | Stage 3 | DSCSport
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