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Looking for Picture of a T5 Speedo Driven Gear

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Old Feb 1, 2014 | 05:43 PM
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Car: 1985 Pontiac Trans Am
Transmission: BW T5, Hurst Short Throw Shifter
Axle/Gears: 3.70 Posi
Looking for Picture of a T5 Speedo Driven Gear

Hi, does anyone have a picture of what the driven gear looks like. I found lots of gears online, but there appears to be a few different types. I realize that they are based on the number of teeth...this is a 21 tooth for a 3.70ish rear.

Is this the correct T5 driven gear?
Thanks.

Amazon.com: ACDelco 3987921 Speedometer Drive Gear: Automotive Amazon.com: ACDelco 3987921 Speedometer Drive Gear: Automotive
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Old Feb 1, 2014 | 05:53 PM
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Re: Looking for Picture of a T5 Speedo Driven Gear

Nope. Wrong diameter. Need a 21 tooth driven?
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Old Feb 1, 2014 | 06:14 PM
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Transmission: BW T5, Hurst Short Throw Shifter
Axle/Gears: 3.70 Posi
Re: Looking for Picture of a T5 Speedo Driven Gear

Originally Posted by jmd
Nope. Wrong diameter. Need a 21 tooth driven?
yes! Any idea where I can buy one?
Thanks.
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Old Feb 1, 2014 | 06:33 PM
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Re: Looking for Picture of a T5 Speedo Driven Gear

http://www.transmissioncenter.net/sp...____va.htm#350

Surf the page a bit.
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Old Feb 1, 2014 | 06:48 PM
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Car: 1985 Pontiac Trans Am
Transmission: BW T5, Hurst Short Throw Shifter
Axle/Gears: 3.70 Posi
Re: Looking for Picture of a T5 Speedo Driven Gear

Originally Posted by sofakingdom
It looks just like the gear from Amazon!
Thanks for your help sofakingdom
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Old Feb 3, 2014 | 09:08 AM
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Engine: Sniper EFI Powered 355
Transmission: WC T5 w/ Steel Support Plate
Axle/Gears: 3.42 10 Bolt Posi
Re: Looking for Picture of a T5 Speedo Driven Gear

Speedo Gears Part NO
18 Brown 3987918
19 White 3987919
20 Blue 3987920
21 Red 3987921
22 Gray 3987922

http://www.ebay.com/itm/ACDelco-3987921-Miscellaneous-Part-/390715111324?pt=Motors_Car_Truck_Parts_Accessories&hash=item5af86f779c&vxp=mtr
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Old Feb 3, 2014 | 11:05 AM
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Axle/Gears: 3.70 Posi
Re: Looking for Picture of a T5 Speedo Driven Gear

Okay, now I am right back to where I started from.
The original gear that I quoted and provided a link for is the exact same gear that Midias just provided a link to eBay for. 3987921 seems to be the correct part number, but JMD say it is the wrong size
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Old Feb 3, 2014 | 11:08 AM
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Transmission: WC T5 w/ Steel Support Plate
Axle/Gears: 3.42 10 Bolt Posi
Re: Looking for Picture of a T5 Speedo Driven Gear

Originally Posted by 85FBTranam
Okay, now I am right back to where I started from.
The original gear that I quoted and provided a link for is the exact same gear that Midias just provided a link to eBay for. 3987921 seems to be the correct part number, but JMD say it is the wrong size
I used the gear I provided with that part number in both a NWC and WC t5.
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Old Feb 3, 2014 | 11:13 AM
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Car: 1985 Pontiac Trans Am
Transmission: BW T5, Hurst Short Throw Shifter
Axle/Gears: 3.70 Posi
Re: Looking for Picture of a T5 Speedo Driven Gear

Midias, did you just replace the driven gear...assume the drive gear is a 7 tooth blue already as the original rear end ratio was 3.27?
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Old Feb 3, 2014 | 11:18 AM
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Transmission: WC T5 w/ Steel Support Plate
Axle/Gears: 3.42 10 Bolt Posi
Re: Looking for Picture of a T5 Speedo Driven Gear

Originally Posted by 85FBTranam
Midias, did you just replace the driven gear...assume the drive gear is a 7 tooth blue already as the original rear end ratio was 3.27?
On the NWC I just replaced the driven gear because it already had the 7 tooth installed.

The WC transmission I added a 7 tooth drive gear to replace the 9 tooth and I added a new speedo sleeve because it came with a VSS

Code:
Driven Gears	Part NO	Speedo Sleeve	Part NO
7 Purple	14071731	Sleeve	345215
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Old Feb 3, 2014 | 11:36 AM
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Car: 1985 Pontiac Trans Am
Transmission: BW T5, Hurst Short Throw Shifter
Axle/Gears: 3.70 Posi
Re: Looking for Picture of a T5 Speedo Driven Gear

Perfect...thanks for your time.
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