C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

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Old Dec 28, 2006 | 11:42 PM
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86malcomekonnner's Avatar
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I've decided to put the 3.54's in this week but i need to calibrate the speedo...i remember seeing a calibration box in the forum store but i cant find it now....is there a speedo gear available for 3.54's because i cant find one? Thanks Jay
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Old Dec 28, 2006 | 11:55 PM
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http://www.dakotadigital.com
SGI-5 seems to be the best buy. The manufacturer for some reason sells it cheaper than even Summit Racing.
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Old Dec 29, 2006 | 02:42 PM
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With P255/50ZR16 Tires. Ratio: 3.54. Drive gear: 8642620, Grey, 15T. Driven gear: 25513049, Green, 42T. VSS: 25007308.
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Old Dec 29, 2006 | 03:48 PM
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http://www.corvetteforum.net/c4/vett...Gearshtm.shtml
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Old Dec 29, 2006 | 06:33 PM
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ok now do i need the drive gear, driven gear, and speed sensor? Where are they located? And are those GM p/n's?
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Old Dec 29, 2006 | 06:49 PM
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Originally Posted by 86malcomekonnner
ok now do i need the drive gear, driven gear, and speed sensor? Where are they located? And are those GM p/n's?
Yes. You will need one of each of all three. If different, you may be able to turn the VSS up side down to make it work, instead of trying to buy an obsolete part. You won't have to buy the parts that are the same as you already have. In the tailshaft housing. Yes, GM.
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Old Dec 29, 2006 | 10:52 PM
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I got mine from Exotic Muscle.
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Old Dec 29, 2006 | 11:01 PM
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I have the gm gears here. The grey drive gear and 43 tooth blue driven gear are both still available. If you have trouble getting them, shoot me a pm.
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