same old 3.07 speed gear question
Thread Starter
Instructor
Joined: May 2017
Posts: 176
Likes: 3
From: VA
same old 3.07 speed gear question
i have 1991 coupe that i installed a 3.07 rear in. i have been trying to get a corrected speedo gear for it.
does anyone know where to find a green 42 tooth gear for sale? that will fit my vss? i cant find it. all these posts are old. it is now 2017 and i think my options are slim.
i have the vss 10456091.
i have found a 10456092 for sale.
i have ordered a 40tooth gear that is readily available. i know this gear is not perfect and the speedometer will read a little fast. but, will is be good enough? its the only other gear that CC sells.
i want to do this without changing both drive and driven gears.
any help is appreciated
thx
does anyone know where to find a green 42 tooth gear for sale? that will fit my vss? i cant find it. all these posts are old. it is now 2017 and i think my options are slim.
i have the vss 10456091.
i have found a 10456092 for sale.
i have ordered a 40tooth gear that is readily available. i know this gear is not perfect and the speedometer will read a little fast. but, will is be good enough? its the only other gear that CC sells.
i want to do this without changing both drive and driven gears.
any help is appreciated
thx
Team Owner
Joined: Sep 2003
Posts: 25,394
Likes: 2,741
i have 1991 coupe that i installed a 3.07 rear in. i have been trying to get a corrected speedo gear for it.
does anyone know where to find a green 42 tooth gear for sale? that will fit my vss? i cant find it. all these posts are old. it is now 2017 and i think my options are slim.
i have the vss 10456091.
i have found a 10456092 for sale.
i have ordered a 40tooth gear that is readily available. i know this gear is not perfect and the speedometer will read a little fast. but, will is be good enough? its the only other gear that CC sells.
i want to do this without changing both drive and driven gears.
any help is appreciated
thx
does anyone know where to find a green 42 tooth gear for sale? that will fit my vss? i cant find it. all these posts are old. it is now 2017 and i think my options are slim.
i have the vss 10456091.
i have found a 10456092 for sale.
i have ordered a 40tooth gear that is readily available. i know this gear is not perfect and the speedometer will read a little fast. but, will is be good enough? its the only other gear that CC sells.
i want to do this without changing both drive and driven gears.
any help is appreciated
thx
I have a 42T driven NOS - you'll need the 10456092 VSS that you've found for sale. There's some conflicting information regarding the VSS applications in threads on the forum and also in the GM SPO catalogs I believe.
You'll need the 10456092 for the 40 tooth that you've already ordered. Drive the 40 tooth and see if it makes you happy - if not contact me.
Le Mans Master
Joined: Jan 2005
Posts: 6,116
Likes: 3
Safety Car
Joined: Aug 2009
Posts: 3,752
Likes: 276
From: Melbourne, Victoria, Australia
Go for the blowerworks green 42 tooth gear, they are hard to find.
My c4 has the factory 3.07 rear and with 275 40 17 tires and has the green gear in the transmission,
the speed display is spot on compared to GPS speed display.
Last edited by gerardvg; Sep 9, 2017 at 03:18 AM.
Thread Starter
Instructor
Joined: May 2017
Posts: 176
Likes: 3
From: VA
Complete
I have a 42T driven NOS - you'll need the 10456092 VSS that you've found for sale. There's some conflicting information regarding the VSS applications in threads on the forum and also in the GM SPO catalogs I believe.
You'll need the 10456092 for the 40 tooth that you've already ordered. Drive the 40 tooth and see if it makes you happy - if not contact me.
You'll need the 10456092 for the 40 tooth that you've already ordered. Drive the 40 tooth and see if it makes you happy - if not contact me.
big shout out to WVZR-1 for all the help and support and the proper gear for the job. He is a great seller with active support.
I got the parts in the mail and installed instantly. It all went together like legos. The speedometer is spot on and the car is now running better than ever.
thanks to the new alternator and serp belt that busted on me at midnight... different story.
thanks too everyone for all the advice
Last edited by clove86; Sep 14, 2017 at 07:23 AM.
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Thread Starter
Instructor
Joined: May 2017
Posts: 176
Likes: 3
From: VA
I need help
I've noticed the shift light and the car feels like it's shifting in and out of over drive at cruising speeds.
Again, I upgraded to 3.07 rear
What is the solution for this?
Thank you
I've noticed the shift light and the car feels like it's shifting in and out of over drive at cruising speeds.
Again, I upgraded to 3.07 rear
What is the solution for this?
Thank you
Thread Starter
Instructor
Joined: May 2017
Posts: 176
Likes: 3
From: VA
Reviving this thread
I now have 19" c6 wheels with a 3.07 rear and green 42 tooth gear.
The speedometer is slow by 3 mph at 60 mph
I checked this with gps.
Help!
What gear do I need to fix the speedometer?
I now have 19" c6 wheels with a 3.07 rear and green 42 tooth gear.
The speedometer is slow by 3 mph at 60 mph
I checked this with gps.
Help!
What gear do I need to fix the speedometer?
Pro
Joined: Apr 2001
Posts: 744
Likes: 13
From: Lenoir City TN
Do you know what gear you have on your transmission output shaft? It would be the "drive gear" in the formula.
you input that, the 3.07 ratio, and the 26.9 tire height and hit calculate. Then it will tell you the number of teeth for the "driven gear" which goes on the Vss.
you input that, the 3.07 ratio, and the 26.9 tire height and hit calculate. Then it will tell you the number of teeth for the "driven gear" which goes on the Vss.