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Old 05-31-2006, 10:49 AM   #1
N2TRUX
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Another 700r4 question. Speedo gear part #'s

I looked on www.bowtieoverdrives.com and used the speedo gear calcualtor to determine what gear set I need. It shows I need a 17 tooth (Maroon) drive gear, and a 36 tooth (White) driven gear to get my speedo corrected.

I know they are reasonable priced, but I need to buy the gears locally. Has anyone had any luck getting them through your local GM parts department? Where can I look up the GM part numbers?

Anyone...

17 tooth (Maroon) drive gear-



36 tooth (White) driven gear-

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Old 05-31-2006, 11:08 AM   #2
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Re: Another 700r4 question. Speedo gear part #'s

The GM parts department in my town had all of the numbers and data right at the parts counter. I get my gears through a friend at a tranny shop. He has all of the gears in stock.
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Old 06-01-2006, 03:37 PM   #3
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Re: Another 700r4 question. Speedo gear part #'s

Look here for the numbers Ken http://73-87.com/7387garage/drivetrain/speedo.htm
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Old 06-01-2006, 06:57 PM   #4
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Re: Another 700r4 question. Speedo gear part #'s

I too have the speedo gear blues. (2.73 to 3.73 rear swap)

Basically; anyone know where I can get a plastic gear housing for the 40+ gear? I just can't see spending that much for an aluminum housing. Everywhere I have looked is out of stock.
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Old 06-02-2006, 12:14 AM   #5
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Re: Another 700r4 question. Speedo gear part #'s

You need to make shure you get the correct carrier for the driven gear or else the gears will not mesh properlly and tare them selfs up. Ask me how I know... Try a junk yard for the correct carrier, it has it stamped on it, as to what gears it should have. You can order the gears threw any GM dealer.
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Last edited by SanitysBane; 06-02-2006 at 12:14 AM.
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Old 06-02-2006, 01:20 AM   #6
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Re: Another 700r4 question. Speedo gear part #'s

Quote:
Originally Posted by 79BIG10
Thanks Brandon. I have no idea why I don't check there before asking questions. For some reason I always forget exactly how much info is on Jeff's site...
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Old 06-02-2006, 07:03 PM   #7
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Re: Another 700r4 question. Speedo gear part #'s

Quote:
Originally Posted by N2TRUX
Thanks Brandon. I have no idea why I don't check there before asking questions. For some reason I always forget exactly how much info is on Jeff's site...

I know I'm the same way. I have to refer to it from time to time to make sure it's not on there. Seems like I'm always finding new stuff on there woth great info.
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