Speedometer Drive Gear
03-30-2013, 10:12 AM
#1
Junior Member
Thread Starter
Join Date: Feb 2013
Posts: 29
Likes: 0
Received 0 Likes
on
0 Posts
Speedometer Drive Gear
My T5 has a RED drive gear but it only has 7 teeth on it (not 9). Everything I've read on here says that the RED gear has 9 teeth.
Am I missing something here?
Am I missing something here?
03-30-2013, 02:53 PM
#3
Junior Member
Thread Starter
Join Date: Feb 2013
Posts: 29
Likes: 0
Received 0 Likes
on
0 Posts
09-07-2013, 11:43 AM
#5
Junior Member
Thread Starter
Join Date: Feb 2013
Posts: 29
Likes: 0
Received 0 Likes
on
0 Posts
Re: Speedometer Drive Gear
My speedo is still off (too fast) even though I did the calculations correctly ( I thought).
Dumb question: How many teeth are on my drive gear shown in the pic above ? 7 or 8?
Dumb question: How many teeth are on my drive gear shown in the pic above ? 7 or 8?
09-07-2013, 12:21 PM
#7
Junior Member
Thread Starter
Join Date: Feb 2013
Posts: 29
Likes: 0
Received 0 Likes
on
0 Posts
Re: Speedometer Drive Gear
The one in the pic above is the actual one that I have. It seems as if you can count 7 0r 8 depending on if you include the smaller ones on the sides.
How many would you say I have?
How many would you say I have?
Trending Topics
09-07-2013, 01:50 PM
#8
Supreme Member
iTrader: (1)
Join Date: Sep 2005
Posts: 26,175
Received 1,704 Likes
on
1,296 Posts
Car: Yes
Engine: Usually
Transmission: Sometimes
Axle/Gears: Behind me somewhere
Re: Speedometer Drive Gear
Look at the END of it.
Count the teeth as they come to the end.
Not that hard.
Looks like a 9-tooth (2 series) to me.
Count the teeth as they come to the end.
Not that hard.
Looks like a 9-tooth (2 series) to me.
09-08-2013, 09:00 AM
#15
Junior Member
Thread Starter
Join Date: Feb 2013
Posts: 29
Likes: 0
Received 0 Likes
on
0 Posts
Re: Speedometer Drive Gear
It is a WC T-5 - I don't know from what year though.
I can't look at it from the side anymore because the trans is installed now.
I am taking other opinions on how many teeth are there.
I can't look at it from the side anymore because the trans is installed now.
I am taking other opinions on how many teeth are there.
09-08-2013, 10:02 PM
#16
Supreme Member
iTrader: (16)
Join Date: Jun 2002
Location: Vancouver, WA
Posts: 1,296
Likes: 0
Received 4 Likes
on
3 Posts
Car: 87 IROC-Z28
Engine: 305 TPI-New 355 on the engine stand
Transmission: T56
Axle/Gears: 3.73 Eaton posi-Soon a 9" Ford!
Re: Speedometer Drive Gear
The GM T5 drive gears come in 7 (Blue) and 9 (Red) only. You count the thread starts (or points) on the side to determine tooth count. It's called a "multi start thread".
I have both gears in stock and just took this pic with both a 7 and a 9 side by side. You can easily see the difference.
I have both gears in stock and just took this pic with both a 7 and a 9 side by side. You can easily see the difference.
09-09-2013, 12:11 PM
#18
Supreme Member
iTrader: (1)
Join Date: Sep 2005
Posts: 26,175
Received 1,704 Likes
on
1,296 Posts
Car: Yes
Engine: Usually
Transmission: Sometimes
Axle/Gears: Behind me somewhere
Re: Speedometer Drive Gear
I have NEVER IN ALL MY DAYS seen a 7-tooth red gear.
Every 7-tooth one, WITHOUT EXCEPTION, that I have ever seen, has been blue. I have personally thrown several 9-tooth red ones in the trash that came to me in T-5 cores, because I have less than zero use for such ... trash. I don't need it cluttering my space and getting in the way of stuff I actually DO have a use for.
Wouldn't be the first time something that GM (or any other mfr for that matter) has published has been incomplete or just plain WRONG. Probably won't be the last.
The experience of LOOKING AT PARTS sometimes has to be believed over what's printed, even in the FSM.
Since the gear in the pic shows 4 complete teeth in the part that can be seen, which is somewhat less than half of the gear, it is entirely reasonable to conclude that it has somewhat more than twice as many as 4 teeth. 9 is COMPLETELY consistent with this logic. 7 is not.
If your gear is red, it's a 9-tooth.
Every 7-tooth one, WITHOUT EXCEPTION, that I have ever seen, has been blue. I have personally thrown several 9-tooth red ones in the trash that came to me in T-5 cores, because I have less than zero use for such ... trash. I don't need it cluttering my space and getting in the way of stuff I actually DO have a use for.
Wouldn't be the first time something that GM (or any other mfr for that matter) has published has been incomplete or just plain WRONG. Probably won't be the last.
The experience of LOOKING AT PARTS sometimes has to be believed over what's printed, even in the FSM.
Since the gear in the pic shows 4 complete teeth in the part that can be seen, which is somewhat less than half of the gear, it is entirely reasonable to conclude that it has somewhat more than twice as many as 4 teeth. 9 is COMPLETELY consistent with this logic. 7 is not.
If your gear is red, it's a 9-tooth.
Thread
Thread Starter
Forum
Replies
Last Post