Click Here -> Please Consider Making a PayPal Contribution to the FordSix Forum!
2019 Contributors:
NJwpod, 1strodeo, mightynorseman, maxtrux, 6d7coupe, broncr, Phase3, 68Flareside240, bmbm40,
mustang6, WorldChampGramp, justintendo, BigBlue94, ags290, motorsickle1130, Rooster, ousooner919, ethanperry
rzcrisis, DoctorC, jamyers, Motorboy, fastpat, Silverback280, chad


<<< New Site Update >>>

Speedometer Gears

Moderator: Mod Squad

User avatar
David_Conwill
Registered User
Posts: 121
Joined: Fri Feb 16, 2007 7:46 pm
Location: Bay City, MI

Speedometer Gears

Post #1 by David_Conwill » Fri May 15, 2009 10:09 am

This is a long shot, because I haven’t even had any luck with my extremely-common Camaro-and-Muncie combination, but is there a good source for speedometer gears that might match an S10 T5 or Toploader overdrive with the stock speedo in my Futura?

-Dave
1962 Falcon DeLuxe: 250/T5/8"/Scarebird discs.

User avatar
David_Conwill
Registered User
Posts: 121
Joined: Fri Feb 16, 2007 7:46 pm
Location: Bay City, MI

Re: Speedometer Gears

Post #2 by David_Conwill » Tue May 19, 2009 11:55 am

So everybody with a T5 is driving around with a disconnected speedometer?

-Dave
1962 Falcon DeLuxe: 250/T5/8"/Scarebird discs.

Inliner
VIP Member
Posts: 29
Joined: Thu Nov 07, 2002 11:15 pm
Location: Sierra Vista, Arizona

Re: Speedometer Gears

Post #3 by Inliner » Sat May 23, 2009 1:13 am

Hi Dave,

Why can't you use the original gear again?
John

User avatar
Eric Rose
Registered User
Posts: 544
Joined: Tue Sep 11, 2007 3:57 pm
Location: Athens, GA

Re: Speedometer Gears

Post #4 by Eric Rose » Sat May 23, 2009 11:16 pm

I'm sure Mustangs Unlimited, Summit, or any of the other big suppliers will have the right gear for you. The T-5 takes the same gear and cable as all other Ford manual transmissions. Really the only variables are what rear-end ratio you have and the height of your rear tires. There are plenty of "speedometer calibration" websites that will tell you how many gear teeth you need for your particular tire size and rear end ratio. :thumbup:
I got 350 heads on a 305 engine. I get 10 miles to the gallon, I ain't got no good intentions.
- Mike Cooley, aka the Stroker Ace.

User avatar
SoCar72
Registered User
Posts: 175
Joined: Tue Apr 21, 2009 8:32 pm
Location: South Carolinian in NJ

Re: Speedometer Gears

Post #5 by SoCar72 » Mon Jun 01, 2009 6:58 pm

Modern Driveline carries a wide assortment of Speedo cables and conversions as well as Speedo gears for the T5's : V8, L4, and S10 tailhousings.
http://www.moderndriveline.com/
Just ordered a Cable and Gear for my upcoming conversion. Just tell 'em what trans, rear gear, and tire size you have...they'll set you up.
'63 Falcon 4dr, 170 stock, 3.20:1 7.25"
T5 ('85 Mustang 5.0) 3.35 1st - 0.68 5th, 25mpg city / 27mpg hwy
Pertronix Ignitor II & Coil, 16x7 Cragar 345's re-bored for 4-lug, 215/60 R16 BFG's

'69 Mach 1, 351w modified, 4sp Top Load, 3.00 9", Torq-Thrust II's 17x8f, 17x9.5r, 245/45f, 275/40r
'79 F-250 2wd, 300, Offy with 470 Holley T/A, Hedman Long Tubes, 4sp OD MT, 3.40 Dana 60

mustang6
VIP Member
Posts: 1435
Joined: Thu Oct 23, 2003 11:32 pm
Location: near Tacoma, WA USA

Re: Speedometer Gears

Post #6 by mustang6 » Mon Jun 08, 2009 3:19 am

The T-5 takes the same gear and cable as all other Ford manual transmissions


Actually Ford 4 speed manual transmissions use a driven gear that is opposite cut from Ford 3 speed manual transmissions. The T-5 uses the same cut gear as the 3 speed transmissions.
Scott

68 Mustang 200 ci, Aussie 250-2V head, Dual Headers, Comp Cams 252H, DSII w/MSD 6AL, T-5, V8 suspension.

65 Ranchero 200 ci, late 170 head, Autolite 1101, 3.03 3 speed, Maverick 8" 4 lug rear with 3.55 gears.

User avatar
powerband
FSP Moderator
Posts: 1972
Joined: Fri Nov 08, 2002 6:45 pm
Location: Mid Hudson Valley - \H/

Re: Speedometer Gears

Post #7 by powerband » Mon Jun 08, 2009 8:40 am

mustang6 wrote:
The T-5 takes the same gear and cable as all other Ford manual transmissions


Actually Ford 4 speed manual transmissions use a driven gear that is opposite cut from Ford 3 speed manual transmissions. The T-5 uses the same cut gear as the 3 speed transmissions.


Yeah , be careful out there. Speedo gears are Ford family specific. Plug the Speedo 2.77 gear in a Toploader and besides no speedo, the gear will be toast - but probably no real damage done .


Toploaders and T5's and from what I read - C4's, use same gear. I have a selection of the gears sold by multiple vendors. Depending on Tranny Speedo gear, OD ratio, Rear Axle ratio and tire size , several "Optimum" gears can be figured. T5's also used three different speedo drive gears which are ID'd by their Color.

I just put an '84 non-world class NWC T5 in place of a 90's Cobra/Z-T5 and needed to change the 23 to 19 tooth gear as Speedo read UNDER - closest available gear is 20 which is as close as speedo anyway..., here's why:

donated chart:

Manual Transmissions with 7 Tooth Drive Gear
1983-1989 T-5 OEM
Pre 1993 T-5 Aftermarket
1996-1998 Cobra T-45 OEM
All Tremec Transmissions

Manual Transmissions with 8 Tooth Drive Gear 1990-1995 T-5 OEM
1996-1998 T-45 OEM Except Cobra

Automatic Transmissions with 7 Tooth Drive Gear 1983-1989 Automatic Transmissions

Automatic Transmissions with 8 Tooth Drive Gear
1990-1998 Automatic Transmissions



Here's a link for T5 speedo gears calculator:

http://www.hanlonmotorsports.com/t5speedo.asp


Have Fun...
"Take time to stop and smell... The roadkill..."

User avatar
stu in wichita
Registered User
Posts: 197
Joined: Mon Mar 09, 2009 3:37 pm

Re: Speedometer Gears

Post #8 by stu in wichita » Thu Feb 03, 2011 2:03 pm

powerband wrote:
mustang6 wrote:
The T-5 takes the same gear and cable as all other Ford manual transmissions


Actually Ford 4 speed manual transmissions use a driven gear that is opposite cut from Ford 3 speed manual transmissions. The T-5 uses the same cut gear as the 3 speed transmissions.


Yeah , be careful out there. Speedo gears are Ford family specific. Plug the Speedo 2.77 gear in a Toploader and besides no speedo, the gear will be toast - but probably no real damage done .


Toploaders and T5's and from what I read - C4's, use same gear.


I'm confused. :? Which gear works with a T5?

I'm ready to hook up my '61 Ranchero, and the existing cable was on the original automatic. I assume it's the same gear as for a 2.77 3-speed, but maybe not. Does anyone know for sure?

Also, on all of these variations, is it just the gear that is different, or is there a difference in the cable end as well? The diameter seems to fit, but is there any difference in depth?

Thanks for any clarification.
-Stu

Who is online

Users browsing this forum: No registered users and 9 guests