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04-21-2013, 10:03 AM
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#1 |
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Registered User
Join Date: Aug 2011
Location: Gallatin, TN
Posts: 782
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700r4 question
I recently swapper a 700r4 in my 77 c10. My problemis that my speedometer does not work. I unhooked the cable at the trans and spun it with a drill and my buddy told me the speedo moved. Before I hooked the cable back up I grabbed the end of the driven gear that the cable goes into and I could spin it by hand. This leads me to believe that it is not "meshing" with the gear on the tail shaft of the trans. I spun it several times and tried to push in on it but it would not go in any further.
I am wondering if the driven gear is too large to mesh with the drive gear. Best I remember the drive gear was brown and the driven gear is red.
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77 C10, 6.0LS/4L80E, 3:73 12 bolt. Boss 338's 20" x 10" w/ 285/50/20 rear. 20" x 8.5" w/ 245/40/20 front. Vintage Air. Full Autometer gauges recessed in factory bezel (Thanks bigblock73!) Gm Storm Grey Metallic paint "Cool ain't ever cheap and cheap ain't ever cool" |
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04-21-2013, 11:01 AM
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#2 |
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BAD BOW-Silverado XST
Join Date: May 2000
Location: Senior Member from Austin, TX
Posts: 6,431
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Re: 700r4 question
There are two housings for gears. One housing is used for 40-45 driven tooth gears. The other is used for 34-39 driven gears. Check the housing part number and tooth color. Check drive gear. Check for broken or missing teeth.
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04-21-2013, 12:23 PM
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#3 | |
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Registered User
Join Date: Aug 2011
Location: Gallatin, TN
Posts: 782
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Re: 700r4 question
Quote:
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77 C10, 6.0LS/4L80E, 3:73 12 bolt. Boss 338's 20" x 10" w/ 285/50/20 rear. 20" x 8.5" w/ 245/40/20 front. Vintage Air. Full Autometer gauges recessed in factory bezel (Thanks bigblock73!) Gm Storm Grey Metallic paint "Cool ain't ever cheap and cheap ain't ever cool" |
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04-21-2013, 11:24 AM
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#4 |
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Registered User
Join Date: Aug 2011
Location: Gallatin, TN
Posts: 782
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Re: 700r4 question
By gear housing youmean the piece that goes into the side of the trans that the gear fits in I assume.
__________________
77 C10, 6.0LS/4L80E, 3:73 12 bolt. Boss 338's 20" x 10" w/ 285/50/20 rear. 20" x 8.5" w/ 245/40/20 front. Vintage Air. Full Autometer gauges recessed in factory bezel (Thanks bigblock73!) Gm Storm Grey Metallic paint "Cool ain't ever cheap and cheap ain't ever cool" |
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04-21-2013, 01:39 PM
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#5 |
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Registered User
Join Date: Aug 2011
Location: Gallatin, TN
Posts: 782
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Re: 700r4 question
I have the wrong housing for my gear. Ordered a new one off Ebay this morning. Hopefully this will fix it!
__________________
77 C10, 6.0LS/4L80E, 3:73 12 bolt. Boss 338's 20" x 10" w/ 285/50/20 rear. 20" x 8.5" w/ 245/40/20 front. Vintage Air. Full Autometer gauges recessed in factory bezel (Thanks bigblock73!) Gm Storm Grey Metallic paint "Cool ain't ever cheap and cheap ain't ever cool" |
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