T5 swap - speedometer cable

jcode68

Active Member

Jul 15, 2003

892

1

29

Massachussetts

Oct 18, 2005

#1

• Oct 18, 2005

• #1

I am doing a T5 swap in my 68 and unfortunately couldn't salvage the speedo cable from my 3 speed manual tranny (don't ask). Given this swap, what is the correct speedo cable and gear to get? I am running the original guage cluster currently (although strongly considering a future upgrade to one of Reenmachine's new units). Thanks.

 

5

5.0ina66

Member

Jun 6, 2003

664

0

16

Ohio

Oct 18, 2005

#2

• Oct 18, 2005

• #2

A C4 cable is the ticket. Which speedo gear is determined by your tire hight, rear gears, and # of teeth on the driven gear in the T5. Do a search! There are charts out there that will help you pick out the right speedo gear.
HTH
--Kyle

 

jcode68

Active Member

Jul 15, 2003

892

1

29

Massachussetts

Oct 19, 2005

#3

• Oct 19, 2005

• #3

Any particular year for the cable?

Thanks for the response. Is there any specific year C4 cable I need or are they all the same length? I suppose any of the Mustang parts suppliers would carry this. I have seen the gear chart referred to before in this forum, I'll do a search for it. I also plan to change my 2.79:1 granny gears for something more aggressive. This is a street driven car, what gear ratio do most of you run with this kind of combo (347, T5)?

 

jcode68

Active Member

Jul 15, 2003

892

1

29

Massachussetts

Oct 20, 2005

#4

• Oct 20, 2005

• #4

C4 Speedo Cable

I found this C4 Speedo Cable on Summit. This has a speedometer cable thread size of 5/8 18. They also offer one with 3/4 20. Can someone tell me which one is correct for my 68 speedometer?

 

jcode68

Active Member

Jul 15, 2003

892

1

29

Massachussetts

Jun 18, 2006

#5

• Jun 18, 2006

• #5

Just bringing this old thread back from the dead. I need to order a speedometer cable and understand I can just order a C4. Will this cable for the 65/66 work for my 68? Mustangs Unlimited didn't list a C4 cable for the 67/68.

 

67coupestang

Founding Member

May 31, 2002

509

2

19

Jun 19, 2006

#6

• Jun 19, 2006

• #6

I dont belive it will but i found this one

http://www.mustangsunlimited.com/it...ubCategory=Speedometer+Cables&CatKey=EMUSTANG