HELP!! interesting speedo gearing probelm
Thread Starter
Melting Slicks
Joined: Jan 2002
Posts: 3,293
Likes: 79
From: Jackson MI
HELP!! interesting speedo gearing probelm
Ok, I'm in the middle of putting my new rear end in my '93 auto vette. I ordered the correct stuff according to this web page (Going to 3.45's from 2.59's)
http://www.corvetteforum.net/c4/vett...Gearshtm.shtml
but when I started to put the speedo gears on there was a problem, the one that went around the output shaft didn't fit, it was too big. The outer diameter is correct, but the inner diameter was not the same as the one that came off the tranny. I have a built '84 camaro tranny with my '93 tail housing. Does anyone know the correct speedo gears to get???? Please Help!!
:confused: :confused:
http://www.corvetteforum.net/c4/vett...Gearshtm.shtml
but when I started to put the speedo gears on there was a problem, the one that went around the output shaft didn't fit, it was too big. The outer diameter is correct, but the inner diameter was not the same as the one that came off the tranny. I have a built '84 camaro tranny with my '93 tail housing. Does anyone know the correct speedo gears to get???? Please Help!!
:confused: :confused:
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Re: HELP!! interesting speedo gearing probelm (mn_vette)
I think I saw this same post yesterday, but I ran out of time to reply. For one reason or another, you have the wrong drive gear. It isn't for your trans. You are installing it into a 1984 700R4? Did you order the 8642620, 15 toothed grey, drive gear for the '84? Or did you order the 12507670, 15 toothed, grey drive gear for the '93? From what you've written you need the early drive gear for your early transmission output shaft. The driven gears are the same. No change there. For the 1993 tailshaft housing you will need the later, 10456089 sensor. I hope it's that simple. Good luck, and...
RACE ON!!!
RACE ON!!!
Thread Starter
Melting Slicks
Joined: Jan 2002
Posts: 3,293
Likes: 79
From: Jackson MI
Re: HELP!! interesting speedo gearing probelm (CFI-EFI)
The problem is that they don't make a 15 tooth for the '84 shaft, only a 17 tooth. If they do make a 15 tooth could someone please give me a part number!!!
Or is there an electronic device that I can get, one that works with ABS??
Or is there an electronic device that I can get, one that works with ABS??
Race Director
Joined: Feb 2004
Posts: 12,518
Likes: 19
Re: HELP!! interesting speedo gearing probelm (mn_vette)
Cyberdyne makes a unit that splices inbetween sensor and speedo. You then adjust signal. I never used it but friends have. It costs about $150.Hope this helps. :chevy
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Re: HELP!! interesting speedo gearing probelm (mn_vette)
The problem is that they don't make a 15 tooth for the '84 shaft, only a 17 tooth. If they do make a 15 tooth could someone please give me a part number!!!
Thread Starter
Melting Slicks
Joined: Jan 2002
Posts: 3,293
Likes: 79
From: Jackson MI
Re: HELP!! interesting speedo gearing probelm (CFI-EFI)
The problem is that they don't make a 15 tooth for the '84 shaft, only a 17 tooth. If they do make a 15 tooth could someone please give me a part number!!! Is there something wrong with the one I supplied in the post that you are answering ???
I notice they used the 8640517 red tear from 84 to 93 and I assumed the grey gears that go with it are of the same inner diameter. I guess I'll call the gm dealer and have them check it out for me. Thanks.
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Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Re: HELP!! interesting speedo gearing probelm (mn_vette)
Oh WOW, I totally missed that number I thought it was something else. Will that fit on the thinner shaft??
I notice they used the 8640517 red tear from 84 to 93 and I assumed the grey gears that go with it are of the same inner diameter. I guess I'll call the gm dealer and have them check it out for me. Thanks.
I notice they used the 8640517 red tear from 84 to 93 and I assumed the grey gears that go with it are of the same inner diameter. I guess I'll call the gm dealer and have them check it out for me. Thanks.
RACE ON!!!