speedo cable gear. - Vintage Mustang Forums
 
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post #1 of 10 (permalink) Old 02-20-2013, 03:32 PM Thread Starter
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speedo cable gear.

Guys,
I have a toploader tranny and i think this gear on the output shaft.
Mustang Speedometer Drive Gear 7-Tooth Black 4-Speed Toploader Transmission | CJ Pony Parts
I Will count teeth tonight .If it is what speedo gear do I need.
It looks like the po used the old 17T type 3 gear out of the old auto tranny.From what i can tell mine is a green tooth and is 17T and the type 3 and i can only find them listed for auto's.
This one is chewed up and the cable is cut off.
Thanks

1970 Mach 351C 4 speed Top loader .
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post #2 of 10 (permalink) Old 02-21-2013, 10:30 AM
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Check NPD, they have a nice selection in their catalog.
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post #3 of 10 (permalink) Old 02-21-2013, 10:42 AM
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Count the teeth inside the trans by putting a dab of white grease on it, and slowly turn the shaft counting the teeth.

Glazier/Nolan Mustang Barn lists all of the available gears, including those Ford no longer has.

G06547 3-speed manual, automatic, or T5 cable Gear, 16 teeth
G06548 3-speed manual, automatic, or T5 cable Gear, 17 teeth
G06549 3-speed manual, automatic, or T5 cable Gear, 18 teeth
G06550 3-speed manual, automatic, or T5 cable Gear, 19 teeth
G06551 3-speed manual, automatic, or T5 cable Gear, 20 teeth
G06552 3-speed manual, automatic, or T5 cable Gear, 21 teeth
G06553 4-speed manual cable Gear, 16 teeth
G06554 4-speed manual cable Gear, 17 teeth
G06555 4-speed manual cable Gear, 18 teeth
G06556 4-speed manual cable Gear, 19 teeth
G06557 4-speed manual cable Gear, 20 teeth
G06558 4-speed manual cable Gear, 21 teeth
G06559 4-speed manual Gear, inside transmission, 6 teeth
G06560 4-speed manual Gear, inside transmission, 7 teeth
G06561 4-speed manual Gear, inside transmission, 8 teeth
G06519 Snap Ring Retainer secures 4 sp gear to output shaft
G06520 Ball Retainer 4 speed speedometer drive gear

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post #4 of 10 (permalink) Old 02-21-2013, 11:12 AM
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what is your gear ratio and how tall of a tire are you running? both of those matter. then you calculate for which gear you need.


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post #5 of 10 (permalink) Old 02-21-2013, 11:44 AM
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When I bought my 66 a month ago, the previous owner had an automatic gear in there instead of the manual. I bought the manual one (17 tooth white, not sure if its correct tooth count) but now have discovered since the wrong gear was in there, it messed up the other plastic gear inside the trans, so now I have to replace that one also.
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post #6 of 10 (permalink) Old 02-21-2013, 11:57 AM
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Quote:
Originally Posted by 66 4 US View Post
When I bought my 66 a month ago, the previous owner had an automatic gear in there instead of the manual. I bought the manual one (17 tooth white, not sure if its correct tooth count) but now have discovered since the wrong gear was in there, it messed up the other plastic gear inside the trans, so now I have to replace that one also.
This would look familiar, then.


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post #7 of 10 (permalink) Old 02-21-2013, 01:15 PM
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The gear inside the transmission should be pink (6 teeth) or black (7 teeth). Pretty sure there are only two. Make sure you get the right gear for the cable, 4 spd vs auto. If you put an auto one in you will tear up the gear inside...not fun...ask me how I know....

Great link here Speedo Gears

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post #8 of 10 (permalink) Old 02-21-2013, 01:32 PM
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Quote:
Originally Posted by malarson View Post
Pretty sure there are only two.
Three- 6, 7, 8- See the above list.

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post #9 of 10 (permalink) Old 02-21-2013, 02:23 PM Thread Starter
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Well All i know for now is I have a black 7 tooth.That is a start and i do not know what i have for gears and will end up with tires as I need to buy new ones.

1970 Mach 351C 4 speed Top loader .
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post #10 of 10 (permalink) Old 02-26-2013, 11:21 AM Thread Starter
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Guys we realized the black gear on the tranny is messed up so i will replace that also witha new black one.

1970 Mach 351C 4 speed Top loader .
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