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03-04-2008, 10:15 AM
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#1 |
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gearhead
Join Date: Jun 2007
Location: Tulsa OK
Posts: 144
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spedometter part? what is it
what is this for exactly? it goes in the tail shaft housing with the speedo gear inside and the speedo cable ataches to it? do i have to use it ?
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2003 GMC Z71 Daily driver  1982 Chevy 2wd short bed, project,  boxerdra@hotmail.com 
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03-04-2008, 10:55 AM
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#2 |
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In the Forgotten far North.
 
Join Date: Jul 2007
Location: Anchorage, Alaska
Posts: 2,627
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Re: spedometter part? what is it
If this part was installed on your vehicle from the factory then yes you do need it to make sure your speedo reads correctly as it is a gear reduction unit for the speedometer. the drive gear on the tailshaft of the tranny and the driven gear in the tailshaft housing are geared as closely as possible to your given speedo but not quite good enough for a really accurate reading. This reducer helps correct that problem.
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1987 R3500 CREW CAB DUALLY (BIG RED)Acquired 06/12/2015 1990 chevy suburban V2500 5.7L My cluster Mods-Nov 2007 overhead console Stereo install Round 2 Aug 2009 Heated/turn signal mirror upgrade |
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03-04-2008, 11:06 AM
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#3 |
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gearhead
Join Date: Jun 2007
Location: Tulsa OK
Posts: 144
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Re: spedometter part? what is it
ok. i changed the tire size and i replaced the speedo with a new auto meeter speedo. I shouldnt relly need it sense nothing is stock any more, am I corect
__________________
2003 GMC Z71 Daily driver 1982 Chevy 2wd short bed, project, boxerdra@hotmail.com
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03-04-2008, 06:30 PM
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#4 |
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Registered User
Join Date: Feb 2008
Location: higginsville, mo
Posts: 1,601
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Re: spedometter part? what is it
you need to go to a speedometer shop and have them calibrate other wise it will be off. I would put it back on because apparently either the trans gear spins faster or speedo spins faster for a reason. but a speedo shop will be able to tell you for sure.
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